Rachel Carson's famous book 'Silent Spring' is related to

• pesticide pollution

• noise pollution

• population explosion

• population explosion

Which of the following is not one of the prime health risks associated with greater UV radiation through the atmosphere due to depletion of stratospheric ozone?

• Increased skin cancer

• Reduced Immune System

• Damage to eyes

• Damage to eyes

Which one of the following pairs of gases are the major cause of 'Greenhouse Effect'?

• CO₂ and CO

• CFCs and SO₂

• CO₂ and N₂O

• CO₂ and N₂O

Which one of the following expanded forms of the followings acronyms is correct?

• UNEP = United Nations Environmental Policy

• EPA = Environmental Pollution Agency

• IUCN = International Union for Conservation of Nature and Natural Resources

• IUCN = International Union for Conservation of Nature and Natural Resources

Which one of the following statements in wrong in case Bhopal gas tragedy?

• Thousands of human beings died

• Radioactive fallout engulfed Bhopal

• It took place on the night of December 2/3, 1984

• It took place on the night of December 2/3, 1984

Eutrophication is often seen in 

• fresh water lakes

• Ocean

• Mountains

• Mountains

Good ozone is found in the 

• mesosphere

• troposphere

• stratosphere

• stratosphere

Select the correct statement from the following

• Bio-gas is produced by the activity of aerobic bacteria on animal waste

• Methanobacterium is an aerobic bacterium found in rumen of cattle

• Biogas, commonly called gobar gas, is pure methane

• Biogas, commonly called gobar gas, is pure methane

Which two of the following changes (1-4) usually tend to occur in the plain dwellers when they move to high altitudes (3500 m or more)?

1) Increase in red blood cell size
2) Increase in red blood cell production
3) Increase in breathing rate
4) Increase in thrombocytes count

Changes occurring are

• (2) and (3)

• (3) and (4)

• (1) and (4)

• (1) and (4)

30.

A renewable exhaustible natural resource is

• coal

• petroleum

• minerals

• minerals