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Consider the following statements:
1. To qualify as a biodiversity hotspot, a region must have at least 1,500 vascular plants as endemics and must have 30% or more of its original natural vegetation.
2. At present, around the world, 36 areas qualify as biodiversity hotspots.
Which of the statements given above is/are correct?
Ans) B
Exp)
Statement 1 is incorrect. To qualify as a biodiversity hotspot, a region must meet two strict criteria:
1. It must have at least 1,500 vascular plants as endemics — which is to say, it must have a high percentage of plant life found nowhere else on the planet. A hotspot, in other words, is irreplaceable.
2. It must have 30% or less of its original natural vegetation. In other words, it must be threatened.
Statement 2 is correct. At present, around the world, 36 areas qualify as hotspots. They represent just 2.4% of Earth’s land surface, but they support more than half of the world’s plant species as endemics — i.e., species found no place else — and nearly 43% of bird, mammal, reptile and amphibian species as endemics.
Ans) B
Exp)
Statement 1 is incorrect. To qualify as a biodiversity hotspot, a region must meet two strict criteria:
1. It must have at least 1,500 vascular plants as endemics — which is to say, it must have a high percentage of plant life found nowhere else on the planet. A hotspot, in other words, is irreplaceable.
2. It must have 30% or less of its original natural vegetation. In other words, it must be threatened.
Statement 2 is correct. At present, around the world, 36 areas qualify as hotspots. They represent just 2.4% of Earth’s land surface, but they support more than half of the world’s plant species as endemics — i.e., species found no place else — and nearly 43% of bird, mammal, reptile and amphibian species as endemics.
Consider the following statements:
1. Greenhouse gases prevent sunlight and heat from passing through the atmosphere.
2. Nitrogen and Methane are two natural greenhouse gas.
Which of the statements given above is/are correct?
Ans) D
Exp)
Greenhouse gases are gases in Earth’s atmosphere that trap heat. They let sunlight pass through the atmosphere, but they prevent the heat that the sunlight brings from leaving the atmosphere. Hence, statement 1 is incorrect.
The main greenhouse gases are:
1. Water vapor
2. Carbon dioxide
3. Methane
4. Ozone
5. Nitrous oxide
6. Chlorofluorocarbons
Statement 2 is incorrect. Nitrogen is not a greenhouse gas, because it is transparent to infrared light. Its molecules are invisible because when you stretch one, it doesn't change the electric field. These are symmetric molecules, made of two identical atoms whose electric fields just cancel each other out.
Ans) D
Exp)
Greenhouse gases are gases in Earth’s atmosphere that trap heat. They let sunlight pass through the atmosphere, but they prevent the heat that the sunlight brings from leaving the atmosphere. Hence, statement 1 is incorrect.
The main greenhouse gases are:
1. Water vapor
2. Carbon dioxide
3. Methane
4. Ozone
5. Nitrous oxide
6. Chlorofluorocarbons
Statement 2 is incorrect. Nitrogen is not a greenhouse gas, because it is transparent to infrared light. Its molecules are invisible because when you stretch one, it doesn't change the electric field. These are symmetric molecules, made of two identical atoms whose electric fields just cancel each other out.
With reference to the Bureau of Energy Efficiency, consider the following statements:
1. It was set up under the provisions of the Environment (Protection) Act, 1986.
2. It promotes preferential treatment for the use of energy-efficient equipment or appliances.
Which of the statements given above is/are correct?
Ans) B
Exp)
Statement 1 is incorrect. The Government of India set up the Bureau of Energy Efficiency (BEE) on 1st March 2002 under the provisions of the Energy Conservation Act, 2001.
The energy Conservation Act of 2001 provides a legal mandate for the implementation of the energy efficiency measures through the institutional mechanism of the Bureau of Energy Efficiency (BEE) in the Central Government and designated agencies in each state.
Statement 2 is correct. BEE takes steps to encourage preferential treatment for use of energy-efficient equipment or appliances.
Bureau of Energy Efficiency has launched various programmes for capacity building of DISCOMs. The objective of such programmes is the capacity building of DISCOMs for carrying out load management programme, Development of DSM action plan and implementation of DSM activities in their respective areas.
Ans) B
Exp)
Statement 1 is incorrect. The Government of India set up the Bureau of Energy Efficiency (BEE) on 1st March 2002 under the provisions of the Energy Conservation Act, 2001.
The energy Conservation Act of 2001 provides a legal mandate for the implementation of the energy efficiency measures through the institutional mechanism of the Bureau of Energy Efficiency (BEE) in the Central Government and designated agencies in each state.
Statement 2 is correct. BEE takes steps to encourage preferential treatment for use of energy-efficient equipment or appliances.
Bureau of Energy Efficiency has launched various programmes for capacity building of DISCOMs. The objective of such programmes is the capacity building of DISCOMs for carrying out load management programme, Development of DSM action plan and implementation of DSM activities in their respective areas.
Which of the following are the secondary pollutants?
1. Ozone
2. Particulate matter
3. Carbon dioxide
4. Sulphur trioxide
Select the correct answer using the code given below:
Ans) C
Exp)
• Primary Pollutants are air pollutants emitted directly from a source. For example- Ammonia, Sulfur dioxide, Nitrogen dioxide and Carbon monoxide, carbon dioxide, Particulate matter (PM) and Volatile organic compounds (VOCs).
• Secondary pollutants are the pollutants that are formed in the atmosphere by chemical interactions between primary pollutants and atmospheric constituents. Thus, they are formed when other pollutants (primary pollutants) react in the atmosphere. For example Ozone, Sulphur trioxide and Peroxyacylnitrate.
• Certain pollutants may be both primary and secondary pollutants. NOx for example is emitted from vehicles and power plants, yet it can also form in the atmosphere from other chemicals.
Ans) C
Exp)
• Primary Pollutants are air pollutants emitted directly from a source. For example- Ammonia, Sulfur dioxide, Nitrogen dioxide and Carbon monoxide, carbon dioxide, Particulate matter (PM) and Volatile organic compounds (VOCs).
• Secondary pollutants are the pollutants that are formed in the atmosphere by chemical interactions between primary pollutants and atmospheric constituents. Thus, they are formed when other pollutants (primary pollutants) react in the atmosphere. For example Ozone, Sulphur trioxide and Peroxyacylnitrate.
• Certain pollutants may be both primary and secondary pollutants. NOx for example is emitted from vehicles and power plants, yet it can also form in the atmosphere from other chemicals.
Which of the following are the sources of Methane?
1. Landfills
2. Rice fields
3. Biomass burning
4. Coal mining
Select the correct answer using the code given below:
Ans) D
Exp) There are many sources that are responsible for the emission of Methane. Methane is a major GHG. The sources of Methane are:
1. Natural wetlands
2. Rice fields
3. Biomass burning
4. Enteric fermentation
5. Termites
6. Landfills
7. Gas drilling
8. Coal mining
9. Oceans
10. Other sources
Ans) D
Exp) There are many sources that are responsible for the emission of Methane. Methane is a major GHG. The sources of Methane are:
1. Natural wetlands
2. Rice fields
3. Biomass burning
4. Enteric fermentation
5. Termites
6. Landfills
7. Gas drilling
8. Coal mining
9. Oceans
10. Other sources