Safety Quiz: Safety And Environmental Policy For Workers

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1. In case of emergency, all non essential personnel are to assembled at location known as

Explanation

In case of an emergency, it is important to have a designated location where all non-essential personnel can gather and be accounted for. This location is commonly known as an assembly point. It serves as a central meeting place where individuals can gather safely and await further instructions or assistance. By assembling at the designated assembly point, emergency responders can easily locate and ensure the safety of all non-essential personnel.

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About This Quiz
Safety Quiz: Safety And Environmental Policy For Workers - Quiz

In every job, it is the mandate of the employer to ensure that the company abides to all safety regulations. The safety quiz below dives deeper into the health, safety and environmental policy for workers. All the best.

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2. Audiometric test is carried out for the measurement of

Explanation

The audiometric test is conducted to measure an individual's hearing capacity. This test helps in determining the person's ability to hear different frequencies and intensities of sounds. By using various techniques such as pure-tone audiometry, speech audiometry, and tympanometry, the test can identify any hearing loss or impairment. It is an essential diagnostic tool used by audiologists to assess and monitor hearing health, as well as to determine the appropriate treatment or intervention for individuals with hearing difficulties.

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3. Chemical can enter in the human body through

Explanation

Chemicals can enter the human body through inhalation, ingestion, and skin absorption. Inhalation refers to the process of breathing in chemical substances present in the air, which can then be absorbed into the bloodstream through the lungs. Ingestion involves consuming chemicals through the mouth, such as by eating or drinking contaminated substances. Skin absorption occurs when chemicals come into contact with the skin and are absorbed into the bloodstream through the skin's pores. Therefore, the correct answer is inhalation, ingestion, and skin absorption, as all three routes can allow chemicals to enter the human body.

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4. Most back injuries at work are caused by

Explanation

Back injuries at work are commonly caused by improper lifting techniques. When individuals lift heavy objects without using proper body mechanics, such as bending at the knees and keeping the back straight, it puts excessive strain on the back muscles and can lead to injuries. This can include sprains, strains, herniated discs, or even more severe conditions like spinal fractures. Therefore, improper lifting is a major cause of back injuries in the workplace.

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5. SWL of equipment signifies

Explanation

The SWL of equipment signifies the safe working load. This refers to the maximum weight or load that a piece of equipment or machinery can safely handle without causing damage or compromising safety. It is important to adhere to the SWL guidelines to prevent accidents, injuries, or equipment failure.

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6. Safety Goggle protects against

Explanation

Safety goggles protect against dust, flying particles, and chemical splash. These hazards can cause serious eye injuries if they come into contact with the eyes. Dust and flying particles can cause irritation, scratches, or even corneal abrasions. Chemical splash can cause chemical burns or damage to the eyes. Therefore, wearing safety goggles is important in environments where there is a risk of these hazards to ensure the safety and protection of the eyes.

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7. Standard ISO 18001 is concerned for

Explanation

Standard ISO 18001 is concerned with OHSAS, which stands for Occupational Health and Safety Assessment Series. This standard focuses on establishing and maintaining an effective occupational health and safety management system within an organization. It provides a framework for identifying and controlling health and safety risks, promoting a safe working environment, and ensuring compliance with relevant laws and regulations. OHSAS helps organizations to prevent work-related injuries, illnesses, and fatalities, and to continually improve their occupational health and safety performance.

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8. For electrical jobs, use

Explanation

Special hand gloves approved for electrical jobs should be used for electrical jobs because they are specifically designed to provide protection against electrical hazards. These gloves are made from materials that offer insulation and can withstand high voltage levels. Ordinary gloves may not provide adequate protection and can put the person at risk of electric shock or other injuries. Asbestos hand gloves are not suitable for electrical jobs as they can release harmful fibers when damaged. PVC hand gloves may offer some level of protection but may not be as effective as special gloves specifically designed for electrical work.

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9. National Safety day observed on

Explanation

National Safety Day is observed on 4th March. This day is dedicated to creating awareness about the importance of safety in various aspects of life, including workplaces, roads, and homes. It aims to educate people about safety measures, accident prevention, and emergency preparedness. The observance of National Safety Day helps in promoting a culture of safety and reducing accidents and injuries.

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10. Machine guards are

Explanation

Machine guards are plates and covers that go over hazardous equipment parts. These guards are designed to protect workers from coming into direct contact with the dangerous components of the machine, such as rotating blades or moving parts. They act as a physical barrier, preventing accidental injury and ensuring the safety of individuals operating or working near the machinery. Machine guards are an essential safety measure in industrial settings to minimize the risk of accidents and promote a safe working environment.

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11. Equipment interlocks are for

Explanation

Equipment interlocks are safety mechanisms designed to prevent machines from operating in unsafe conditions. These interlocks are put in place to ensure that the machine cannot be operated if certain safety criteria are not met. This helps to protect both the machine and the operator from potential harm or accidents. By preventing the machine from operating in an unsafe condition, equipment interlocks play a crucial role in maintaining a safe working environment.

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12. If a computer catches fire then the most appropriate type of extinguishers to be used

Explanation

CO2 (carbon dioxide) extinguishers are the most appropriate type to be used when a computer catches fire. This is because CO2 extinguishers are specifically designed for electrical fires, which are common in computer-related incidents. CO2 extinguishers work by displacing oxygen, which helps to smother the fire and prevent it from spreading. Additionally, CO2 extinguishers do not leave any residue or cause damage to the computer equipment, making them a suitable choice for extinguishing fires in this scenario.

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13. Sketch diagram of emergency procedure displayed at various location known as

Explanation

The correct answer is "Emergency action plan". An emergency action plan is a sketch diagram that is displayed at various locations to provide clear instructions on what actions to take in case of an emergency. It outlines the necessary steps to be followed to ensure the safety and well-being of individuals during an emergency situation. This plan helps to minimize confusion and panic by providing a clear and organized approach to handling emergencies.

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14. When preparing to lift you should

Explanation

When preparing to lift, it is important to keep a straight back and bend at the knees. This posture helps to distribute the weight evenly and reduces the strain on the lower back. Locking the knees and bending at the waist can lead to improper lifting technique and increase the risk of injury. Twisting exercises and seeking help from others may not be directly related to the proper lifting technique and are not mentioned as necessary steps in the question.

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15. Minimum concentration of vapours, gas or dust in air below which the propogation of flame does not occur known as

Explanation

The correct answer is LEL, which stands for Lower Explosive Limit. The LEL represents the minimum concentration of vapors, gas, or dust in the air below which the propagation of flame does not occur. It is an important safety parameter to determine the potential for a fire or explosion in a given environment.

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16. HCL is considered as

Explanation

HCL (hydrochloric acid) is considered as toxic and corrosive. This is because it is a strong acid that can cause severe burns and tissue damage upon contact. It is also toxic when inhaled or ingested, leading to respiratory and digestive system issues. The combination of its corrosive and toxic properties makes it a highly hazardous substance that should be handled with extreme caution and proper safety measures.

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17. What type of fire extinguishers is used to put off electrical fires

Explanation

CO2 fire extinguishers are used to put off electrical fires because they do not conduct electricity. When CO2 is discharged onto an electrical fire, it displaces the oxygen, effectively smothering the fire and extinguishing it. This type of fire extinguisher is safe to use on electrical equipment and does not leave any residue behind, making it a suitable choice for electrical fires.

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18. Testing of hoisting tools & tackles shall be undertaken

Explanation

Hoisting tools and tackles are subject to wear and tear due to regular use, which can compromise their safety and efficiency. Therefore, it is necessary to conduct regular testing to ensure their proper functioning. Testing once a year allows for the identification of any potential issues and ensures that the hoisting tools and tackles are in good working condition. This periodic testing helps to prevent accidents and maintain a safe working environment.

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19. Unit of measurement of illumination

Explanation

The unit of measurement of illumination is Lux. Lux is a metric unit that measures the amount of light that falls on a surface or is emitted from a source. It is commonly used to measure the brightness of artificial and natural light sources, such as light bulbs, lamps, and the sun. dB is a unit used to measure sound intensity, Candela (cd) is used to measure luminous intensity, and Octoband is not a recognized unit of measurement for illumination.

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20. While handling chlorine leakage, what should be used

Explanation

When handling chlorine leakage, it is important to prioritize personal safety. Chlorine is a highly toxic and corrosive substance that can cause severe harm if it comes into contact with the skin or is inhaled. Therefore, the correct answer suggests using a PVC apron with a hood to protect the body, a BA (breathing apparatus) set to provide clean air, and gum boots to prevent direct contact with the chemical. This combination of protective gear ensures maximum safety and minimizes the risk of exposure to chlorine.

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21. What is abbreviation of LD 50?

Explanation

LD 50 stands for Lethal Dose 50. This term is commonly used in toxicology to represent the dose of a substance that is lethal to 50% of the test population. It is a measure of the toxicity of a substance and helps in determining the potential harm it can cause.

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22. Most accidents are caused by

Explanation

People are the most common cause of accidents. This is because human error, negligence, and lack of attention to safety precautions can lead to accidents. People may make mistakes, take unnecessary risks, or fail to follow proper procedures, resulting in accidents. While factors like bad weather, equipment failure, or poor direction can also contribute to accidents, it is ultimately the actions and decisions of individuals that play the biggest role in causing accidents.

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23. Emergency Information painted on Hydrocarbon Road Tankers is called

Explanation

HAZCHEM is the correct answer because it refers to the emergency information painted on Hydrocarbon Road Tankers. HAZCHEM stands for Hazardous Chemicals, and it is a system used to identify the potential hazards associated with the chemicals being transported. This information is crucial in case of emergencies or accidents involving the tankers, as it helps emergency responders and other personnel to take appropriate actions to mitigate the risks and ensure the safety of people and the environment.

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24. In case of emergency in unit, Incident controller will be

Explanation

The correct answer is "Unit-In-Charge." In case of an emergency in a unit, the Unit-In-Charge is responsible for taking control of the situation and coordinating the necessary actions. They are in charge of managing the incident and ensuring the safety of everyone involved. The Unit-In-Charge has the authority and expertise to make decisions and direct the response efforts effectively.

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25. When gas is rapidly released from a cylinder of compressed gas, the temperature of the cylinder will

Explanation

When gas is rapidly released from a cylinder of compressed gas, the temperature of the cylinder will decrease. This is because the rapid release of gas causes a decrease in pressure, which in turn leads to a decrease in temperature. According to the ideal gas law, when the pressure of a gas decreases, its temperature also decreases. This phenomenon is known as the Joule-Thomson effect. Therefore, when gas is rapidly released from a compressed cylinder, the temperature of the cylinder will decrease.

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26. LPG vapour

Explanation

LPG vapor is heavier than air because it has a higher density compared to air. This means that LPG vapor will tend to sink and accumulate in low-lying areas or confined spaces. It is important to be aware of this property when handling or storing LPG to prevent potential hazards such as suffocation or explosion.

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27. The maximum speed limit prescribed inside plant premises

Explanation

The correct answer is 20 Km/Hr because the question asks for the maximum speed limit inside plant premises. This means that vehicles should not exceed a speed of 20 Km/Hr while driving within the plant premises for safety reasons.

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28. What chemical is being dosed in LPG for specific odour

Explanation

Ethyl mercaptane is the chemical that is added to LPG to give it a specific odor. This is done for safety reasons, as LPG is an odorless and colorless gas, making it difficult to detect leaks or potential hazards. By adding ethyl mercaptane, a strong and unpleasant odor is introduced, allowing people to easily identify the presence of LPG and take appropriate precautions.

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29. Minimum ignition energy required for methane

Explanation

The minimum ignition energy required for methane is 0.25 MJ. This means that in order for methane to ignite, it needs a minimum energy input of 0.25 MJ. This energy can come from various sources such as sparks, flames, or electrical discharges. The lower the minimum ignition energy, the easier it is for methane to ignite. In this case, with a minimum ignition energy of 0.25 MJ, methane is relatively easy to ignite compared to the other options provided.

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30. What type of apron should be used for providing protection of the body while working with chemicals & solvents?

Explanation

PVC aprons are commonly used for providing protection of the body while working with chemicals and solvents. PVC (polyvinyl chloride) is a synthetic material that is resistant to many chemicals and solvents, making it ideal for such tasks. PVC aprons are durable, waterproof, and provide a barrier against hazardous substances, preventing them from coming into contact with the skin and causing harm.

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31. Date of Bhopal Disaster

Explanation

The correct answer is 3rd December 1984. This date refers to the Bhopal Disaster, which was a gas leak incident that occurred in Bhopal, India. On this day, a pesticide plant released a toxic gas known as methyl isocyanate, resulting in the deaths of thousands of people and causing severe health issues for many others. The disaster is considered one of the world's worst industrial accidents.

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32. Which is not an Industrial PPE

Explanation

A crash helmet is not considered an industrial personal protective equipment (PPE) because it is primarily designed for protection in high-impact activities such as motorcycling or cycling, rather than for industrial work environments. Industrial PPE typically includes equipment that provides protection against specific workplace hazards, such as splash proof goggles for eye protection, face shields for face protection, and ear muffs for hearing protection. Crash helmets are not specifically designed or regulated for industrial use and therefore do not fall under the category of industrial PPE.

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33. Which part of the foot accounts for maximum percentage of disability injury occurring in industry?

Explanation

The toe is the part of the foot that accounts for the maximum percentage of disability injuries occurring in the industry. This could be due to various reasons such as the toe being more vulnerable to being crushed or injured by heavy objects, or the toe being more prone to fractures or sprains. The specific details or statistics regarding this claim are not provided in the question.

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34. The following is utilised to identify the direction of wind?

Explanation

A wind sock is a device that is commonly used to identify the direction of wind. It is typically made of a long, tapered fabric tube with an opening at one end. The wind causes the fabric to fill up and point in the direction from which the wind is coming. This makes it a useful tool for pilots, meteorologists, and others who need to know the wind direction for various purposes such as aviation, weather forecasting, and outdoor activities.

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35. Investigation of an accident is

Explanation

Investigation of an accident is conducted to prevent reoccurrence. This means that the purpose of the investigation is to identify the causes and contributing factors of the accident in order to implement measures and strategies that will prevent similar accidents from happening in the future. By understanding what went wrong and why, steps can be taken to address any deficiencies or hazards, improve safety procedures, and mitigate risks. This helps to ensure the safety and well-being of individuals and prevent the occurrence of similar accidents in the future.

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36. The best suitable chemical for solvent fire

Explanation

Foam is the best suitable chemical for solvent fire because it creates a thick blanket that covers the fuel surface, preventing oxygen from reaching the fire and extinguishing it. Foam also helps to cool down the fire, reducing the heat and preventing re-ignition. It is effective for both polar and non-polar solvents and is widely used in industries where solvent fires are a common hazard. Water is not suitable for solvent fires as it can spread the fire and may cause an explosion. DCP (Dry Chemical Powder) and CO2 (Carbon Dioxide) are effective for some types of fires but may not be as suitable for solvent fires as foam.

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37. Expand BLEVE

Explanation

BLEVE stands for Boiling Liquid Expanding Vapour Explosion. This term is used to describe a catastrophic explosion that occurs when a vessel containing a pressurized liquid is suddenly ruptured or fails, causing the liquid to rapidly boil and convert into vapor. The rapid expansion of the vapor creates a powerful explosion, which can cause significant damage and pose a serious threat to nearby individuals and structures.

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38. Accidents are

Explanation

Accidents are preventable because they can be avoided by taking necessary precautions and following safety guidelines. However, they are also costly because they result in financial expenses such as medical bills, property damage, and legal fees. Therefore, accidents can be both preventable and costly, emphasizing the importance of taking preventive measures to avoid unnecessary expenses and harm.

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39. 15%-20% space is kept above pressure vessel to take care of

Explanation

The space kept above the pressure vessel is necessary to accommodate pressure variation. As the pressure inside the vessel fluctuates, the extra space allows for expansion and contraction without causing damage to the vessel or compromising its structural integrity. This additional space acts as a buffer, absorbing any changes in pressure and preventing any potential hazards or accidents.

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40. How the tuberculosis transmitted

Explanation

Tuberculosis is primarily transmitted through direct contact with infected individuals and airborne particles. When an infected person coughs, sneezes, or talks, they release droplets containing the bacteria that cause tuberculosis. These droplets can be inhaled by people in close proximity, leading to infection. Additionally, direct contact with an infected person, such as sharing utensils or kissing, can also spread the bacteria. Transmission through contaminated food, water, or puncture wounds is not a common mode of transmission for tuberculosis.

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41. Theme for safety day this year 2014

Explanation

The correct answer is "manage stress at workplace & Control hazards." This answer aligns with the theme for safety day in 2014. It suggests that the focus of the safety day is on addressing stress in the workplace and controlling hazards to ensure a safe working environment. This theme emphasizes the importance of managing stress levels and implementing measures to mitigate and control potential hazards that could pose risks to the employees' safety and well-being.

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42. The potential of chemical substances to give toxic effect on single/sudden exposure

Explanation

Acute toxicity refers to the potential of a chemical substance to cause harmful effects on an organism after a single or sudden exposure. This can include immediate health effects such as skin irritation, respiratory distress, or even death. Chronic toxicity, on the other hand, refers to the long-term effects of repeated or continuous exposure to a substance over a prolonged period. Mutagenicity refers to the ability of a substance to cause genetic mutations. Therefore, the correct answer in this case is "Acute" as it specifically pertains to the immediate toxic effects of a substance.

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43. How you define class A petroleum products as per Indian Petroleum Act.

Explanation

Class A petroleum products are defined as those with a flash point less than 23 degrees Celsius according to the Indian Petroleum Act. The flash point is the lowest temperature at which the vapors of a substance can ignite when exposed to an open flame or heat source. Therefore, any petroleum product with a flash point below 23 degrees Celsius is considered highly flammable and falls under Class A.

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44. What is inside BA Set Cylinder

Explanation

The correct answer is Compressed Air. This is because a BA Set (Breathing Apparatus Set) cylinder typically contains compressed air, which is used to provide a supply of breathable air to the user in environments where the air quality is compromised or non-existent. Compressed oxygen is not commonly used in BA Sets as it can be dangerous if not handled properly. Medial oxygen is not a commonly used term and is likely a typo. Natural gas is not used in BA Sets as it is not suitable for breathing purposes.

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45. A reportable accident is one that makes person disable to perform duty for more than

Explanation

A reportable accident is defined as an accident that results in a person being unable to perform their duty for more than a certain period of time. In this case, the correct answer is 48 hrs, meaning that if an accident causes a person to be unable to perform their duty for more than 48 hours, it is considered a reportable accident. This suggests that accidents resulting in longer periods of incapacitation are considered more severe or significant in terms of their impact on a person's ability to work.

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46. Frequency of internal safety audit is

Explanation

The frequency of internal safety audit is quarterly, meaning that it is conducted every three months. This allows for regular assessments of the safety protocols and procedures in place within an organization. Conducting audits on a quarterly basis ensures that any potential safety issues are identified and addressed in a timely manner, reducing the risk of accidents or incidents occurring. It also allows for the monitoring of the effectiveness of safety measures and the implementation of any necessary improvements.

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47. What are extra requirement to safety shoes for work in gas atmosphere?

Explanation

Safety shoes for work in a gas atmosphere require protection against high current and antistatic electricity. This is because in a gas atmosphere, there is a higher risk of electrical hazards and static electricity buildup. Therefore, it is important for safety shoes to have features that can prevent the buildup of static electricity and provide protection against high currents to ensure the safety of the wearer in such environments. The other options mentioned, such as oil resistant sole and securing of toe and heat on the shoe, may be important for other work environments but are not specifically required for work in a gas atmosphere.

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48. Which is not a integral part of our HSE policy?

Explanation

Conducting External Safety audit is not a integral part of our HSE policy. While protection of environment, use of PPEs, and employee's training are all important components of our HSE policy, conducting external safety audits is not specifically mentioned as an integral part.

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49. NSCwas set up by

Explanation

The correct answer is the ministry of labour. This is because the NSC (National Safety Council) was set up by the ministry of labour.

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50. The range of current, which provide painful shock/muscler control loss on human body

Explanation

The range of current between 16-50 mA is the correct answer because within this range, the current is strong enough to cause painful shocks and muscle control loss in the human body. Currents below 16 mA may be felt but are unlikely to cause significant harm, while currents above 50 mA can lead to more severe injuries. Therefore, the range of 16-50 mA is the critical threshold where the current becomes dangerous and can cause painful shocks and loss of muscle control.

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51. Sound of frequency below 20 Hz is called

Explanation

Sound waves with a frequency below 20 Hz are called infrasonic. Infrasonic waves are not audible to the human ear, but some animals can detect and communicate using infrasonic frequencies. On the other hand, ultrasonic refers to sound waves with a frequency above the upper limit of human hearing, supersonics typically refers to speeds exceeding that of sound, and audio sounds is a redundant term as audio already refers to sound.

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52. HSE policy at unit level signed by

Explanation

The correct answer is "Occupier and Factory Manager". In terms of HSE (Health, Safety, and Environment) policy at the unit level, it is important for the occupier of the unit and the factory manager to sign the policy. This ensures that both parties are aware of and committed to implementing and maintaining a safe and environmentally friendly workplace. The occupier is responsible for the overall operations of the unit, while the factory manager is responsible for the day-to-day management. By having both of them sign the policy, it ensures accountability and a shared commitment to HSE practices.

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53. The unit of measurement of intensity of an ionizing source of radiation.

Explanation

RAD stands for Radiation Absorbed Dose and is a unit of measurement used to quantify the amount of energy absorbed by a material or tissue when exposed to ionizing radiation. It represents the amount of radiation energy deposited per unit mass of the material. The RAD unit is commonly used in radiation therapy and radiation protection to assess the potential biological effects of ionizing radiation on living organisms.

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54. Pick out the scalar quantity

Explanation

A scalar quantity is a physical quantity that has magnitude but no direction. Force, velocity, and acceleration are vector quantities as they have both magnitude and direction. Pressure, on the other hand, is a scalar quantity as it only has magnitude (the amount of force per unit area) and does not have a specific direction associated with it.

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55. Fire service week observed on

Explanation

Fire service week is observed on 14th April. This week is dedicated to honoring the efforts and sacrifices made by firefighters in protecting lives and property from fire hazards. It is a time to raise awareness about fire safety and prevention, and to educate the public on the importance of fire services. By observing Fire Service Week on 14th April, it provides an opportunity to express gratitude and appreciation for the brave men and women who risk their lives to keep us safe.

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56. Minimum Level of PPM of Chlorine in air at which use of canster mask is desired.

Explanation

The minimum level of PPM of Chlorine in the air at which the use of a canister mask is desired is 1 PPM. This indicates that even at low concentrations of Chlorine in the air, it is recommended to use a canister mask for protection.

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57. The monomer of polythene is

Explanation

Polythene, also known as polyethylene, is a polymer made up of repeating units of ethylene monomers. Ethylene is a simple hydrocarbon compound with the chemical formula C2H4. It is a colorless gas that is widely used in the production of various plastics, including polythene. Vinyl chloride, ethyl alcohol, and benzene are not monomers of polythene and do not contribute to its structure.

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58. LEL and UEL of LPG

Explanation

The correct answer is 2% to 8%. LEL (Lower Explosive Limit) and UEL (Upper Explosive Limit) are the concentration ranges of a gas or vapor in the air that can produce a fire or explosion. For LPG (Liquefied Petroleum Gas), the LEL is typically around 2% and the UEL is around 8%. This means that if the concentration of LPG in the air is below 2% or above 8%, it will not ignite or explode. However, if the concentration is within this range, there is a potential for fire or explosion.

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59. What is the explosion limit for natural gas?

Explanation

The explosion limit for natural gas refers to the range of gas concentrations in the air that can potentially cause an explosion. In this case, the correct answer is 5-15%, which means that natural gas can explode if its concentration in the air is between 5% and 15%. Concentrations below 5% are too lean to sustain combustion, while concentrations above 15% are too rich. It is important to be aware of these limits to ensure safety when handling or working with natural gas.

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60. Off site emergency planning is the responsibility of

Explanation

The off-site emergency planning refers to the preparation and coordination of actions to be taken in the event of an emergency that may affect the surrounding community or environment. The District Collector is responsible for overseeing and managing emergency situations within their district, including off-site emergencies that may occur at factories. They have the authority and resources to coordinate with various stakeholders, such as emergency services, government agencies, and the factory occupier, to ensure a prompt and effective response to any emergency situation.

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61. Before loading of any hydrocarbon like LPG tanker, maximum oxygen content should be ensured

Explanation

The correct answer is 0.005 because before loading any hydrocarbon like LPG tanker, it is important to ensure that the oxygen content is kept to a minimum. This is because oxygen can react with the hydrocarbon and cause combustion or explosion. Therefore, a maximum oxygen content of 0.005 is necessary to maintain safety during the loading process.

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62. HAZOP study stands for

Explanation

HAZOP study stands for Hazard and Operability Study. It is a systematic and structured approach used to identify and analyze potential hazards and operability issues in a process plant or system. This study involves a multidisciplinary team that examines the process design, equipment, and operating procedures to identify deviations that may lead to hazardous situations or operational problems. The purpose of the HAZOP study is to assess risks, propose mitigation measures, and improve the overall safety and operability of the system.

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63. The human body is made up of several chemical elements; the element present in the highest proportion (65%) in the body is

Explanation

Oxygen is the correct answer because it makes up the highest proportion (65%) of the chemical elements in the human body. Oxygen is essential for various biological processes, including respiration and energy production. It is a key component of water and is found in many organic compounds. Without oxygen, human life would not be possible.

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64. What is the threshold limit valve of carbon monooxide.

Explanation

The threshold limit value of carbon monoxide is 50 PPM. This means that exposure to carbon monoxide levels above 50 parts per million can be harmful to human health.

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65. Hazards from Hot, Wet or slippery surface can be eliminated by

Explanation

Wearing safety shoes is the correct answer because they are specifically designed to provide protection and prevent hazards from hot, wet, or slippery surfaces. Safety shoes typically have slip-resistant soles that provide better traction on slippery surfaces, reducing the risk of slips and falls. They also have heat-resistant properties, protecting the feet from hot surfaces. Additionally, safety shoes are often made of waterproof materials, keeping the feet dry in wet conditions. Wearing safety shoes can therefore eliminate the hazards associated with hot, wet, or slippery surfaces.

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66. Permissible exposure limit for the continuous noise per eight hours working is

Explanation

The permissible exposure limit for continuous noise per eight hours of working is 90 dB. This means that workers should not be exposed to noise levels exceeding 90 dB for more than eight hours in a day. Exposure to higher noise levels for extended periods can lead to hearing damage and other health issues. It is important for employers to implement measures to control and reduce noise levels in the workplace to protect the health and safety of their employees.

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67. Name two primary means of protecting employees from work place hazards prior to considering personnel protective equipments

Explanation

Engineering controls and workplace controls are two primary means of protecting employees from workplace hazards. Engineering controls involve modifying the workplace or equipment to eliminate or reduce hazards, such as installing ventilation systems to remove harmful fumes or using machine guards to prevent injuries. Workplace controls refer to implementing policies and procedures that minimize hazards, such as implementing safety protocols and providing training to employees. These measures aim to create a safe working environment and prevent accidents or injuries before considering the use of personal protective equipment.

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68. Fire resistant uniform used during fire fighting is made up of which fabric

Explanation

Nomex is a fabric commonly used in fire-resistant uniforms for firefighters. It is a synthetic material known for its exceptional heat and flame resistance properties. Nomex is made from aramid fibers, which are inherently flame-resistant and do not melt or drip when exposed to high temperatures. This fabric provides firefighters with protection against heat, flames, and thermal hazards, allowing them to safely work in dangerous fire situations.

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69. Mutual Aid Partner of GAIL Khera is

Explanation

The correct answer is IOCL because IOCL, also known as Indian Oil Corporation Limited, is a mutual aid partner of GAIL Khera. GAIL, which stands for Gas Authority of India Limited, is a natural gas processing and distribution company in India. IOCL is one of the largest oil refining and marketing companies in India and has a partnership with GAIL Khera for mutual aid and support in their respective operations.

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70. Permit for job for excavation more than 1.2 meters comes under

Explanation

A permit for a job that involves excavation more than 1.2 meters falls under the category of confined space. Confined spaces refer to areas that are enclosed or partially enclosed, such as tanks, vessels, or underground chambers, where there may be limited access and ventilation. Excavation work that exceeds a certain depth can create a confined space, as it poses a potential risk for workers due to the limited space and potential hazards such as cave-ins, lack of oxygen, or toxic gases. Therefore, a permit is required to ensure proper safety measures are in place before conducting such excavation work.

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71. Expand HIRA sheet, applicalbe for OHSAS 18001

Explanation

The correct answer is "Hazard identification and Risk assessment." This answer is correct because HIRA stands for Hazard Identification and Risk Assessment. HIRA is a systematic process used to identify potential hazards and assess the associated risks in a workplace or project. It involves identifying hazards, evaluating their potential consequences, and determining the likelihood of those consequences occurring. This information is then used to prioritize and implement appropriate control measures to mitigate the identified risks. OHSAS 18001 is a standard for occupational health and safety management systems, and HIRA is an important component of this standard.

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72. Press statement during emergency is approved by?

Explanation

The main incident controller is responsible for approving press statements during an emergency. They have the authority and expertise to assess the situation and determine the appropriate information that should be shared with the media and the public. As the person in charge of managing the incident, the main incident controller ensures that accurate and timely information is provided to the media, while also considering the welfare and safety of those involved. Therefore, they are the most suitable person to approve press statements in such situations.

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73. The gas used for artificial ripening of green fruit is

Explanation

Ethylene is the gas used for artificial ripening of green fruit. It is a plant hormone that naturally occurs in fruits and is responsible for the ripening process. When applied externally, ethylene triggers the release of enzymes that speed up the ripening process, causing the fruit to soften and become sweeter. This gas is commonly used in the agriculture industry to ripen fruits such as bananas, tomatoes, and avocados, allowing them to be harvested before they are fully ripe and transported to distant markets.

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74. Expand MCP in respect of emergency communication

Explanation

The correct answer is Master control point. In the context of emergency communication, MCP refers to Master Control Point. This is a centralized location or system that controls and coordinates emergency communication activities. It serves as a hub for managing and directing emergency communications, ensuring efficient and effective response during emergencies. The MCP is responsible for receiving, processing, and disseminating emergency information to the relevant parties, such as emergency responders, authorities, and the public. It plays a crucial role in facilitating quick and coordinated communication in emergency situations.

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75. The first metal used by man was

Explanation

Copper is considered the first metal used by man because it was easily accessible and could be found in its pure form. It has been used for thousands of years for various purposes, including making tools, weapons, and jewelry. Copper was highly valued for its durability, malleability, and conductivity, making it an essential material for early civilizations. While iron, gold, and bronze were also used by ancient civilizations, copper predates them and holds the distinction of being the first metal utilized by humans.

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76. How many types of notifiable diseases in appropriate schedule of factory act ?

Explanation

The appropriate schedule of the factory act includes a list of notifiable diseases that must be reported. The question is asking how many types of notifiable diseases are included in this schedule. The correct answer is 29, indicating that there are 29 different types of diseases that are required to be reported under the factory act.

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77. Which electrical equipment is best suited for Zone 0 as per classification of flammable atmosphere.

Explanation

Intrinsically safe equipment is best suited for Zone 0 as per the classification of flammable atmosphere. Zone 0 is the most hazardous area, where explosive gases or vapors are present continuously or for long periods. Intrinsically safe equipment is designed to prevent the release of sufficient electrical or thermal energy to ignite a hazardous atmosphere. It ensures that even in the presence of flammable gases, sparks or excessive heat are not generated, making it the safest choice for Zone 0 environments.

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78. Which of the following is not a notifiable dieases as per factory act.

Explanation

Tuberculosis is not a notifiable disease as per the Factory Act. Notifiable diseases are those that are required by law to be reported to public health authorities. This is to ensure that appropriate measures can be taken to prevent the spread of the disease and protect public health. While poisoning by nitrous fumes, anthrax, and pathological manifestation due to X-ray are all examples of notifiable diseases, tuberculosis is not included in the list.

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79. TOR, a hazard analysis process

Explanation

The correct answer is Technique of Operational Review. TOR is a hazard analysis process that involves reviewing and analyzing the operational procedures and practices of an organization to identify potential hazards and risks. It focuses on reviewing the operational aspects of a system or process to ensure that it is functioning effectively and safely. This technique helps in identifying any weaknesses or vulnerabilities in the operations and allows for appropriate measures to be taken to mitigate the risks.

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80. The most abundant rare gas in the atmosphere is

Explanation

The most abundant rare gas in the atmosphere is argon (Ar). While helium (He) is the second most abundant, argon is more prevalent. It makes up about 0.934% of the Earth's atmosphere. Neon (Ne) and xenon (Xe) are present in much smaller quantities.

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81. Oxygen contents in confined space shall not be less than

Explanation

The correct answer is 21% because oxygen levels in a confined space should not be less than this percentage. Oxygen is necessary for humans to breathe, and a lower percentage can lead to oxygen deprivation or asphyxiation. Therefore, it is crucial to ensure that the oxygen content in a confined space is at least 21% to maintain a safe environment for individuals inside.

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82. Which Rule suggest requirement of Emergency Action PLan

Explanation

The correct answer is MSIHC RULES. MSIHC stands for the Manufacture, Storage, and Import of Hazardous Chemicals Rules. These rules are designed to ensure the safe handling and storage of hazardous chemicals in order to prevent accidents and protect the environment and public health. Therefore, it is logical to suggest that the requirement of an Emergency Action Plan would be included in these rules to ensure that appropriate measures are in place to respond to any potential chemical accidents or emergencies.

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83. Which is not a respiratory protection equipment

Explanation

An Oxygen Pac is not a respiratory protection equipment because it is used to provide oxygen therapy to individuals who have difficulty breathing, rather than protecting the wearer from inhaling harmful substances or particles in the air. Canister masks, BA sets (Breathing Apparatus sets), and air line trolleys are all examples of respiratory protection equipment that are designed to protect the wearer's respiratory system from hazardous environments or substances.

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84. The hottest part of the gas flame is known as

Explanation

The non-luminous zone of a gas flame is the hottest part. This is because it is where complete combustion occurs, with the highest amount of oxygen available for the fuel to burn. In this zone, the fuel is completely consumed, resulting in a high temperature and minimal visible light.

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