Consider the following statements:
1. | The “bad” ozone is the ozone that is formed in the troposphere. |
2. | The “good ozone” in the stratosphere acts as a shield against harmful UV radiation. |
3. | UV-A radiations can cause skin cancers and snow-blindness cataracts. |
Which of the above statements are true?
1. | I and II only | 2. | I and III only |
3. | II and III only | 4. | I, II, and III |
The following diagram shows the effect of sewage discharge on some important characteristics of a river. What can be A and B respectively?
1. | BOD and DO | 2. | DO and BOD |
3. | BOD and COD | 4. | COD and BOD |
The following diagram shows the working of an electrostatic precipitator. Identify the correct statement:
1. | A negative voltage ionizes the air around the wire that in turn ionizes the particles in the air stream. |
2. | They are able to remove about 75% of the particulate matter present in the exhaust from a thermal power plant. |
3. | The velocity of air between the plates must be rapid enough to allow electrostatic precipitation of the dust particles. |
4. | PM 2.5 dust particles are more easily removed by the electrostatic precipitator than larger sized particulate matter. |
Which award is given to individuals or communities from rural areas that have shown extraordinary courage and dedication in protecting wildlife?
1. Venu Menon Animal Allies Award
2. Amrita Devi Bishnoi Award
3. David Shepherd Wildlife Award
4. The Pledge Award
Read the following statements and chooser the correct option
Statement A: Electrostatic precipitator can remove over 99% particulate matter present in exhaust from a thermal power plant.
Statement B: According to CPCB particulate size 2.5m or less in diameter are responsible for causing the greatest harm to human health.
1. Only statement A is correct.
2. Only statement B is correct.
3. Both statements A and B are correct.
4. Both statements A and B are incorrect.
State True (T) or False (F) for the following statements and select the correct option
A. Motor vehicles equipped with catalytic converter should use unleaded petrol because lead in the petrol inactivates the catalyst.
B. Recently government of India has instituted the Amrita Devi Bishnoi Wildlife Protection Award for
individuals from urban areas that have shown extraordinary courage and dedication in protecting
wildlife.
C. Reforestation may occur naturally in a deforested area.
A B C
1. T T F
2. T F T
3. T F F
4. F F T
Select the correct option regarding relative contribution of various greenhouse gases to total global warming.
1.
2.
3.
4.
Which one is not an example of primary pollutants?
1. DDT 2. CO
3. Pollen 4. PAN
In which part of the atmosphere ‘good ozone’ is found?
1. Troposphere 2. Stratosphere
3. Ionosphere 4. Exosphere
Which one is not an effect of increase in the level of greenhouse gases?
1. fertilisation effect.
2. EI Nino effect.
3. Snow blindness.
4. Warming of troposphere and cooling of stratosphere and thermosphere