The Montreal Protocol refers to:

1. persistent organic pollutants

2. global warming and climate change

3. substances that deplete the ozone layer

4. biosafety of genetically modified organisms

Which of the following methods is the most suitable for the disposal of nuclear waste?

Which of the following pairs of gases is mainly responsible for green house effect?

1. Carbon dioxide and methane

2. Ozone and Ammonia

3. Oxygen and Nitrogen

4. Nitrogen and Sulphur dioxide

Polyblend, a fine powder of recycled modified plastic, has proved to be a good material for:
1. making tubes and pipes
2. making plastic sacks
3. use as a fertilizer
4. construction of roads

Which of the following protocols did aim for reducing the emission of chlorofluorocarbons into the atmosphere?

1. Geneva protocol

2. Montreal protocol

3. Kyoto protocol

4. Gothenburg protocol

Assertion: During green revolution, crop production is increased.

Reason: Deforestation is one of the method of green revolution to increases productivity.

Biological Oxygen Demand (BOD) is a measure of:
 

Minamata disease is caused due to the presence of …………. in water.

1. cadmium

2. lead

3. arsenic

4. mercury

A lake with an inflow of domestic s wage rich in organic waste may result in:

1. Drying of the lake very soon due to algal bloom

2. Increased production of fish due to lot of nutrients

3. Death of fish due to lack of oxygen

4. Increased population of aquatic food web organisms

In a coal-fired power plant, electrostatic precipitators are installed to control the emission of:

1. $S{O}_2$

2. $N{O}_x$

3. SPM

4. CO