Chemical Safety MCQ Exam: Quiz!

Inspecting a cylinder's valve for gas leakage is necessary because it ensures the safety of the user and prevents potential accidents. Gas leakage can lead to the accumulation of flammable gases, increasing the risk of fire or explosion. Regular inspection allows for the detection and repair of any leaks, ensuring that the cylinder is in proper working condition and minimizing the chances of accidents.

Chemicals can enter our body through various routes. Inhalation refers to the process of breathing in chemical substances present in the air, which can then be absorbed into our bloodstream through the lungs. Ingestion occurs when we consume food or drinks that may contain chemical contaminants, allowing them to enter our body through the digestive system. Skin contact refers to direct exposure of chemicals to our skin, where they can be absorbed into our bloodstream. Therefore, all of the above routes, inhalation, ingestion, and skin contact, are possible ways for chemicals to enter our body.

The correct answer is National Fire Protection Association. The NFPA is a globally recognized organization that aims to reduce the risk of fire and other hazards. They develop and publish codes and standards for fire safety, electrical safety, and other related areas. The organization also provides training, education, and certification programs to promote fire safety awareness and best practices.

At the time of chemical handling, it is important to take care of several things. Flammable liquids should be stored in closed containers to prevent any accidents or fires. Workplaces should be cleaned regularly to avoid any chemical spills on the floor, which can be hazardous. Additionally, it is necessary to use personal protective equipment to ensure the safety of the person handling the chemicals. Therefore, all of the options mentioned are important and should be taken care of during chemical handling.

When transporting hazardous waste, it is important to follow proper procedures and regulations to ensure safety. Carrying a Uniform Hazardous Waste Manifest in the truck allows for proper documentation and tracking of the waste being transported. Having the word "WASTE" before the name of the material on the bills helps clearly identify and distinguish hazardous materials. Signing a uniform Hazardous Waste Manifest is necessary to acknowledge responsibility and compliance with the regulations. Therefore, all of the above options are correct and should be followed when transporting hazardous waste.

A Material Safety Data Sheet (MSDS) provides comprehensive information about a hazardous material. It includes details about the physical and chemical properties of the material, such as its appearance, melting point, and reactivity. The MSDS also lists all hazards associated with the material, including potential health effects and environmental hazards. Additionally, it provides precautions for safe handling and storage of the material, such as recommended personal protective equipment and proper storage conditions. Therefore, all of the given options - physical and chemical properties, all hazards regarding the material, and precautions for safe handling and storage - can be found on an MSDS.

The flashpoint is indeed the lowest temperature at which a liquid can form an ignitable mixture in air near the surface of the liquid. This means that if the temperature of a liquid is below its flashpoint, it will not produce enough vapor to ignite in the presence of an ignition source. However, if the temperature is at or above the flashpoint, the liquid can release enough vapor to create a flammable mixture with the air, which can then be ignited. Therefore, the statement is true.

NIDM stands for National Institute of Disaster Management. This institution is responsible for training and capacity building in the field of disaster management. They provide education, research, and policy support to enhance the knowledge and skills of individuals and organizations involved in disaster management.

The correct answer is "All of the above" because when storing chemicals, it is important to segregate flammables and combustibles from oxidizers to prevent any potential reactions that may cause fires or explosions. Similarly, oxidizing agents should be kept separate from reducing agents to avoid any unwanted reactions. Additionally, pyrophoric compounds, which can ignite spontaneously, should be stored separately from flammables to minimize the risk of fire. Therefore, all of these measures should be taken to ensure the safe storage of chemicals.

Compressed gas cylinders must be stored in upright positions to prevent them from falling over and causing damage or injury. Storing them in a dry area is important to prevent the cylinders from rusting or corroding, which can compromise their integrity. Additionally, storing them in a well-ventilated area is crucial to prevent the buildup of any leaked gases, which could be hazardous. Therefore, all of the given options are necessary for the proper storage of compressed gas cylinders.

Material Safety Data Sheets (MSDSs) are designed to provide the information needed to protect users from any hazard that may be associated with the chemical. MSDSs contain detailed information about the physical and chemical properties of the chemical, its potential hazards, proper handling and storage procedures, emergency response measures, and personal protective equipment recommendations. By providing this information, MSDSs enable users to understand the potential risks associated with the chemical and take appropriate precautions to ensure their safety.

The correct answer is Methyl isocynide. The Bhopal gas tragedy refers to the catastrophic gas leak incident that occurred in Bhopal, India in 1984. The gas leak was caused by the release of methyl isocyanate (MIC) from a pesticide plant owned by Union Carbide India Limited. MIC is a highly toxic gas that can cause severe respiratory problems, eye irritation, and other health issues. The incident resulted in the death of thousands of people and left many others with long-term health complications.

In the event of a splash of corrosive chemical in the eye, it is important to take immediate action to minimize damage. Getting the victim to an eye wash fountain within 30 seconds is crucial as it allows for prompt rinsing of the eye, which can help dilute and remove the chemical. The eyewash fountain must have a gentle but copious flow of fresh water for at least 15 minutes to ensure thorough rinsing. Additionally, calling a doctor for further instructions is necessary as they can provide guidance on any necessary medical treatment or additional steps to take. Therefore, all of the above actions are necessary in such a situation.

When a chemical falls on the body, the first step should be to rush and pour water on the affected body part. This is because water helps to dilute and wash away the chemical from the skin, reducing the risk of further damage or injury. It is important to quickly remove the chemical to minimize its harmful effects. Rushing to the emergency room may be necessary in severe cases or if instructed by medical professionals, but immediate action should be taken to flush the affected area with water to prevent further harm.

Liquid nitrogen is used in the Pantnagar Plant as a cryogenic material. Cryogenic materials are substances that are used at extremely low temperatures. Liquid nitrogen has a boiling point of -196 degrees Celsius and is commonly used in industries for freezing and preserving biological samples, cooling electronics, and in cryosurgery. It is also used in the Pantnagar Plant for various purposes such as cryopreservation of seeds, storage of biological samples, and in the production of frozen foods.

Non-sparking tools should be used on drums/bullets containing flammable liquids because they are specifically designed to reduce the risk of generating sparks, which could potentially ignite the flammable liquid and cause a fire or explosion. These tools are typically made from materials that do not produce sparks when struck or rubbed against other surfaces, such as brass, bronze, or non-ferrous alloys. By using non-sparking tools, the risk of accidental ignition is minimized, ensuring a safer working environment when handling flammable liquids.

An oxygen-enriched environment is known as an atmosphere containing more than 23.5% oxygen by volume. In such an environment, the reactivity of oxygen significantly increases, which poses a higher risk of ignition and fire. Additionally, materials that may not burn in normal air can burn vigorously in an oxygen-enriched environment. Therefore, all of the above statements are correct in describing an oxygen-enriched environment.

The Bhopal gas tragedy occurred on December 3, 1984. This industrial disaster took place in Bhopal, India, when a pesticide plant owned by Union Carbide India Limited released a toxic gas called methyl isocyanate. The gas leak resulted in the deaths of thousands of people and caused severe health issues for many others. The tragedy is considered one of the worst industrial accidents in history, highlighting the importance of safety regulations and proper maintenance in industrial facilities.

The given signs represent different types of hazards or dangers. The correct answer, "Corrosion," indicates that the sign represents a corrosive substance or material that can cause damage or destruction to other materials upon contact.

The blue color on the diamond symbol of a chemical label represents health hazard. This means that the chemical has the potential to cause harm to human health, such as through inhalation, ingestion, or skin contact. It indicates that the chemical may cause acute or chronic health effects, ranging from mild irritation to severe toxicity or even carcinogenicity. It is important to handle and use such chemicals with caution, following appropriate safety measures and wearing necessary personal protective equipment.

Liquid nitrogen is extremely cold, with a boiling point of -196 degrees Celsius. When it comes into contact with skin or any other body part, it can cause severe frostbite or cold burns. This is because the extreme cold can rapidly freeze the tissues, causing damage to the skin and underlying structures. Therefore, the hazard associated with liquid nitrogen is a cold burn.

According to the UN Classification of Dangerous Goods, Class 3 indicates flammable liquids. Flammable liquids are substances that have a flashpoint below 60°C and can easily catch fire when exposed to an ignition source. They can pose a significant risk of fire and can spread quickly, causing damage to property and endangering lives. Therefore, Class 3 is used to categorize and identify substances that fall under this classification.

The correct answer is 05944663100. This is the emergency contact number for the TML Pantnagar plant. In case of any emergency or urgent situation at the plant, individuals can contact this number for immediate assistance or support.

Propane has the lowest flash point among the chemicals being used in the plant. Flash point refers to the lowest temperature at which a substance can emit vapors that can ignite when exposed to an ignition source. Since propane is a highly flammable gas, it has a very low flash point compared to the other chemicals listed, making it the correct answer.

The information provided in Material Safety Data Sheets (MSDS) is distributed in 16 sections. MSDS is a document that contains information about the potential hazards, handling, storage, and emergency procedures for a specific substance or product. These sections cover various aspects such as identification, composition, first aid measures, fire-fighting measures, accidental release measures, handling and storage, exposure controls, physical and chemical properties, stability and reactivity, toxicological information, ecological information, disposal considerations, transport information, regulatory information, and other important details related to the substance or product.

The correct answer is 19.5%. This is because personnel, including rescue workers, should not enter areas with an oxygen concentration below this level unless they have proper respiratory protection such as an SCBA or air-line respirator. Oxygen levels below this threshold can be dangerous and can lead to asphyxiation or other health hazards.

Cylinders that contain corrosive gases should not be stored for longer than 6 months. This is because corrosive gases can react with the metal of the cylinder over time, leading to degradation and potential leakage. Storing them for longer periods increases the risk of damage to the cylinder and potential hazards. Therefore, it is important to regularly inspect and replace cylinders containing corrosive gases to ensure safety.

Moving a compressed gas cylinder from storage to the work area must be done by using a hand truck. A hand truck is specifically designed to safely and efficiently transport heavy objects. It provides stability and control during transportation, reducing the risk of accidents or injuries. Using a sling to drag the cylinder may cause damage to the cylinder or result in a loss of control. A crane or pickup truck may not provide the necessary stability and control required for moving a compressed gas cylinder safely.

The flash point of a substance refers to the lowest temperature at which it can vaporize to form an ignitable mixture in air. In the case of propane gas, the flash point is −104 °C, which means that at temperatures below this point, propane will not produce enough vapor to ignite. This information is important for handling and storage of propane, as it indicates the temperature at which precautions should be taken to prevent the formation of flammable mixtures.

The liquid to gas expansion ratio of nitrogen at its boiling point of 20°C is 1:694. This means that when nitrogen is heated to its boiling point, it expands to 694 times its original volume as a liquid. This expansion ratio is a measure of how much the substance expands when transitioning from a liquid to a gas state.

The color code of the HSD Pipeline in our Pantnagar plant is brown.

Nitrogen gas is used in the TCF (Trim Chassis Final) section of the Pantnagar plant. This section involves the final assembly of the vehicle, including the installation of the interior components, chassis, and trim. Nitrogen gas is commonly used in automotive manufacturing plants for various applications, such as tire inflation, cleaning, and as an inert gas for preventing oxidation during welding or painting processes. Therefore, it is likely that Nitrogen gas is utilized in the TCF section of the Pantnagar plant for one or more of these purposes.

The correct answer is 9 KL. This means that the storage capacity of CNG in the plant is 9 kiloliters.

The color coding for the CO2 gas cylinder is black with a white band. This color coding is used to easily identify and differentiate the CO2 gas cylinder from other types of gas cylinders. The black color signifies that the cylinder contains a non-flammable gas, while the white band indicates that the gas is classified as an asphyxiant. This color coding system helps ensure safe handling and storage of the CO2 gas cylinder.

A Dewar Flask is a type of apparatus that is commonly used to handle Nitrogen from store to shop in TML Pantnagar. It is specifically designed to store and transport cryogenic fluids such as liquid nitrogen. The Dewar Flask has a double-walled vacuum-insulated structure that helps to maintain the low temperature of the nitrogen. This makes it a suitable choice for safely transferring and storing the nitrogen without it evaporating or losing its properties.