Environment (#2)

The most toxic metal pollutant of automobile exhaust is

• cadmium
• lead
• arsenic
• mercury

Carbon monoxide, emitted by vehicles which turn to carbon dioxide by the catalyst converter, whose ceramic disc is controlled by

• Silver

• Gold

• Copper

• Palladium

Which megacity of India generates the largest solid waste per capita annually?

• Chennai
• Mumbai
• Delhi
• Bangalore

Concerning 'fly ash' produced by the power plants using coal as fuel, which of the following statements is/ are correct?

1. Fly ash can be used in the production of bricks for building construction.

2. Fly ash can be used as a replacement for some of the Portland cement concrete.

3. Fly ash is made up of silicon dioxide and calcium oxide only, and does not contain any toxic elements.

Select the correct answer using the code given below.

• Only 1 and 2

• Only 2

• Only 1 and 3

• Only 3

In the context of solving pollution problems, what is/are the advantage/ advantages technique? of bioremediation

1. It is a technique for cleaning up pollution by enhancing the same biodegradation process that occurs in nature.

2. Any contaminant with heavy metals such as cadmium and lead can be readily and completely treated by bioremediation using microorganisms.

3. Genetic engineering can be used to create micro-organisms specifically designed for bioremediation.

Select the correct answer using the code given below.

• Only 1

• Only 2 and 3

• Only 1 and 3

• 1, 2 and 3

In the acid rain, the rain water and snow is contaminated by which of the following pollutants?

1. 1. Sulphur dioxide

2. 2. Nitrogen oxide

3. 3. Carbon dioxide

4. 4. Methane

Select the correct answer using the code given below.

• Only 1, 3, and 4

• Only 1 and 2

• Only 1, 2, and 4

• Only 2 and 3

The international Acid Rain Information Centre has been set up at

• Berlin

• Oslo

• Osaka

• Manchester

The acidic air pollutants only reach the Earth’s surface because of wet deposition.

• True

• False

Who is the protagonist of Green Revolution?

• Medha Patkar

• M.S. Swaminathan

• Sunderlal Bahuguna

• Chandi Prasad Bhatt

Biomagnification refers to an increase in the number/content/quantity of

• Blue green Algae

• Insects

• Weeds

• Toxicants