Environmental Issues · Question 12

Polyblend, a fine powder of recycled modified plastic, has proved to be a good material for :

1. Construction of roads
2. Making tubes and pipes
3. Making plastic sacks
4. use as a fertilizer

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

1. Nitrogen and Sulphur dioxide
2. Carbon dioxide and Methane
3. Ozone and Ammonia
4. Oxygen and Nitrogen

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

1. Dump the waste within rocks under deep ocean
2. Bury the waste within rocks deep below the Earth’s surface
3. Shoot the waste into space
4. Bury the waste under Antarctic ice-cover

In stratosphere, which of the following elements acts as a catalyst in degradation of ozone and release of molecular oxygen?

1. Carbon
2. Cl
3. Fe
4. Oxygen

Which of the following is a secondary pollutant?

1. CO
2. CO2
3. SO2
4. O3

World Ozone Day is celebrated on

1. 5th June
2. 21st April
3. 16th September
4. 22nd April

Match the items given in column I with those in column II and select the correct option given below.

1. (a)-(ii), (b)-(i), (c)-(iii), (d)-(iv)
2. (a)-(i), (b)-(iii), (c)-(iv), (d)-(ii)
3. (a)-(iii), (b)-(iv), (c)-(i), (d)-(ii)
4. (a)-(i), (b)-(ii), (c)-(iv), (d)-(iii)

Which one of the following statements is not valid for aerosols ?

1. They alter rainfall and monsoon patterns
2. They have negative impact on agricultural land
3. They cause increased agricultural productivity
4. They are harmful to human health

A system of rotating crops with legume or grass pasture to improve soil structure and fertility is called -

1. Shifting agriculture
2. Strip farming
3. Ley farming
4. Contour farming

Depletion of which gas in the atmosphere can lead to an increased incidence of skin cancers

1. Methane
2. Ozone
3. Nitrous oxide
4. Ammonia