Environmental Science MCQ Q

ssc preparation, important competetion questions, current affairs of india, latest question asked in competetion papers,

Question: 1

What are the common air pollutants?

They are common air pollutants

(1) Smoke from forest fire

(2) Carbon monoxide

(3) Sulphur dioxide

(4) Nitrogen oxides

(5) Automobile exhaust

(6) Partially burnt fuel

Question: 2

Define Global warming?

Abnormal increase of the temperature in the environment due to the continuous accumulation of gaseous pollutants is known as global warming.

Question: 3

What are the benefits of Rainwater Harvesting?

They are

1. Ground water level increases and improves.

2. Recharges the well.

3. Reduces the amount of runoff water, soil erosion loss of valuable top soil and evaporation rate.

4. Arrests sea water intrusion towards hand.

5. Improves plant growth, reduces drinking water problems.

Question: 4

What is meant by green house effect?

The phenomenon by which more amount of heat from the Sun is trapped by the earth, thus increasing its temperature is known as Greenhouse effect.

Question: 5

What are herbivores and carnivores?

The animals which feed only on plants are called herbivores. Eg. Deer, cow and goat.

The animals which feed only on herbivores are called carnivores. Eg. Lion, tiger, snake.

Question: 6

What is autotrophs?

The organisms which prepare their own food are called producers. They are also known as autotrophs. All the green plants are autotrophs.

Question: 7

Define wild life?

All non-domesticated and non cultivated biota found in natural habitat are termed wild life.

Question: 8

Name some abiotic components?

Soil, water and air etc. are abiotic components.

Question: 9

How is acid rain formed?

The air pollutant sulphur dioxide dissolves in water to form sulphuric acid, a corrosive substance, which has destructive effect. When such acids fall on the earth’s surface.

It is called acid rain.

Acid rain reduces the fertility of soil.

Question: 10

What are endangered species?

Such species with decreased population that are on the verge of extinction are called endangered species.

Question: 11

What is atmosphere?

The envelope of air around the earth is called atmosphere.

Question: 12

What is social forestry?

Social forestry is growing of trees on available land for the purpose outside natural forest areas and managing the same with intimate involvement of local people.

Question: 13

What is ozone hole?

Ozone depletion extending over the entire Antarctic formed a hole in the ozone layer known as ozone hole.

Question: 14

What is ozone depletion?

Gases such as NO, NO2, Cl2 react with ozone easily. When these gases are released in excess the amount of ozone in the atmosphere is reduced. This is known as ozone depletion.

Question: 15

What is endangered species?

When a species is represented by a fewer number in its natural habitat, then it is called endangered species

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