1.
Which among the following is the most energy-efficient?
Correct Answer
C. Compact fluorescent lamp
Explanation
The compact fluorescent lamp is the most energy-efficient among the options given. This is because compact fluorescent lamps use significantly less energy compared to incandescent bulbs and fluorescent tube lights. They are designed to produce the same amount of light while consuming less electricity, making them more efficient in terms of energy consumption.
2.
In India and elsewhere, biomass can be obtained from
Correct Answer
D. All of the above
Explanation
Biomass refers to organic matter that can be used as a renewable energy source. In India and other places, biomass can be obtained from various sources such as groundnut shells, sugarcane bagasse, and rice husk. These agricultural residues are commonly available and can be used to generate heat and electricity through processes like combustion or gasification.
3.
Solar cells are simple photovoltaic devices that convert solar energy directly into electricity and are manufactured from the second-most abundant element in the earth’s crust. Name this substance.
Correct Answer
B. Silicon
Explanation
Silicon is the second-most abundant element in the earth's crust and has unique properties that make it an ideal material for converting solar energy into electricity. It is a semiconductor that can absorb photons from sunlight and release electrons, generating an electric current. The process of using silicon to create solar cells is called photovoltaics, and it has revolutionized the renewable energy industry.
4.
In rural areas, this gas can be generated and used for cooking and lighting.
Correct Answer
A. Biogas
Explanation
Biogas is a renewable energy source that can be generated in rural areas. It is produced through the decomposition of organic waste, such as animal manure or agricultural residues, in an anaerobic environment. Biogas is primarily composed of methane, which can be used for cooking and lighting purposes. It is a sustainable alternative to traditional fossil fuels and helps reduce greenhouse gas emissions.
5.
Large amounts of solar energy are stored in the oceans and seas. The process of harnessing this energy is called
Correct Answer
A. OTEC (ocean thermal energy conversion)
Explanation
The correct answer is OTEC (ocean thermal energy conversion) because it accurately describes the process of harnessing solar energy stored in the oceans and seas. The other options, OTC, OSTEC, and OTEC (Ocean technology of energy conversion), do not accurately represent the process or the specific term used to describe it.
6.
A much cheaper and lighter fuel extracted from crude oil is used to adulterate petrol in the ratio of 3:1 (adulterant: petrol). It causes damage to the vehicle engine, besides leading to high emission levels. Name this common adulterant of petrol that most easily escapes detection.
Correct Answer
C. Naphtha
Explanation
Naphtha is a much cheaper and lighter fuel extracted from crude oil that is commonly used to adulterate petrol. It is mixed in the ratio of 3:1 (adulterant: petrol). The use of naphtha as an adulterant in petrol can cause damage to the vehicle engine and also leads to high emission levels. Naphtha is difficult to detect as an adulterant, making it the most easily escaping adulterant of petrol.
7.
Some people disapprove of wind turbines because:
Correct Answer
D. They are often built in areas of natural beauty.
Explanation
Wind turbines are often built in areas of natural beauty. This suggests that some people object to wind turbines because they believe that the construction of these turbines in scenic locations can negatively impact the aesthetic appeal of the area.
8.
Natural gas is transported mainly by
Correct Answer
A. Pipelines
Explanation
Natural gas is primarily transported through pipelines due to their efficiency, reliability, and cost-effectiveness. Pipelines provide a safe and secure means of transporting large volumes of natural gas over long distances. They are designed to minimize leakage and ensure the smooth flow of gas without any interruptions. In contrast, trucks and auto rickshaws have limited capacity and are not suitable for transporting large quantities of natural gas.
9.
How much of the energy in burning coal reaches the consumer as electricity?
Correct Answer
A. 1/3 (one-third)
Explanation
The answer is 1/3 (one-third). A significant amount of energy is lost as heat during the conversion process. This loss occurs in various stages, such as the generation of steam, the turning of turbines, and the transmission of electricity. As a result, only one-third of the energy in burning coal actually reaches the consumer as electricity.
10.
Plastic was once hailed as a "wonder material" but is now becoming a serious environmental and health problem due to its non-biodegradable nature. The burning of plastics, especially PVC, releases the following harmful gases into the atmosphere.
Correct Answer
A. Dioxins
Explanation
Plastic, especially PVCs, when burned releases dioxins into the atmosphere. Dioxins are highly toxic and persistent chemicals that can have detrimental effects on the environment and human health. They can accumulate in the food chain, causing long-term damage to ecosystems and posing risks to human populations. Therefore, the burning of plastics, including PVC, contributes to the serious environmental and health problems associated with non-biodegradable materials.
11.
The state’s and citizens’ responsibilities for environmental protection is enshrined in the Constitution of India in the following two articles:
Correct Answer
C. 48A and 51G
Explanation
The correct answer is 48A and 51G. These two articles in the Constitution of India outline the responsibilities of both the state and citizens for environmental protection. Article 48A states that it is the duty of the state to protect and improve the environment and safeguard the forests and wildlife of the country. Article 51G states that it is the fundamental duty of every citizen of India to protect and improve the natural environment, including forests, lakes, rivers, and wildlife. These articles emphasize the importance of environmental protection and assign responsibilities to both the state and citizens to ensure its preservation.
12.
A device is fitted to motor vehicles to chemically reduce some gasses produced by internal combustion engines like NOx, CO, and HC into less harmful products. Name this device.
Correct Answer
A. Catalytic converter
Explanation
A catalytic converter is a device fitted to motor vehicles that chemically reduces harmful gasses produced by internal combustion engines, such as NOx, CO, and HC, into less harmful products. It works by using catalysts to facilitate chemical reactions that convert these gasses into less toxic substances. This helps to reduce air pollution and improve air quality.
13.
.………………..of power consumed by incandescent bulbs gets wasted in the form of heat.
Correct Answer
C. 85%
Explanation
Approximately 85% of the power consumed by incandescent bulbs gets wasted in the form of heat. Incandescent bulbs work by passing an electric current through a filament, which then emits light. However, this process is not very efficient, as a significant amount of energy is lost as heat instead of being converted into light. Therefore, only a small percentage of the power consumed by incandescent bulbs is actually used to produce light, making them highly inefficient compared to other types of lighting technologies.
14.
Which one is not in National Action Plan on Climate Change?
Correct Answer
D. National Mission for Energy Conservation
Explanation
The National Mission for Energy Conservation is not a part of the National Action Plan on Climate Change. Although energy conservation is an important aspect of addressing climate change, it is not specifically mentioned as a separate mission within the plan. The other options, National Mission for Sustainable Agriculture, National Mission on Sustainable Habitat, and National Mission for Enhanced Energy Efficiency, are all included in the National Action Plan on Climate Change as specific missions to address different aspects of climate change mitigation and adaptation.
15.
Mithi Virdi came in News due to the coming nuclear power plant to be set up in
Correct Answer
D. Gujrat
Explanation
Mithi Virdi came in news due to the coming nuclear power plant to be set up in Gujrat. This suggests that there have been recent developments or announcements regarding the establishment of a nuclear power plant in Mithi Virdi, Gujrat. It is likely that this news has gained attention and media coverage, hence the mention of Mithi Virdi in the question.
16.
Which combination figure is incorrect regarding energy capacity installed in India
Source
Percentage
Coal
57.38
Hydroelectricity
9.03
Renewable energy source
11.94
Gas
18.77
Nuclear
2.28
Oil
0.57
Correct Answer
D. Hydroelectricity & Gas
Explanation
The combination figure that is incorrect regarding energy capacity installed in India is Hydroelectricity & Gas. The percentages given for hydroelectricity and gas do not match the values mentioned in the table.