Classical

General Knowledge MCQ - People & Environment

16:  

Which of the following statements is not  true about the availability of water on the earth, the crisis for which is going to increase in the years to come?

A.

About 97.5 per cent of the total volume of water available on the earth is salty

B.

80 per cent of the water available to us for use comes in bursts as monsoons

C.

About 2.5 per cent of the total water available on the earth is polluted water and cannot be used for human activities

D.

Possibility is that some big glaciers will melt in the coming ten-fifteen years and sea level will rise by 3-4 meters all over the earth

 
 

Option: D

Explanation :


17:  

Different seasons are formed because

A.

Sun is moving around the earth

B.

of revolution of the earth around the Sun on its orbit

C.

of rotation of the earth around its axis

D.

because earth is tilted when it revolves around sun. 

 

 
 

Option: D

Explanation :

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18:  

 Consider the following statements:
1. Ozone is found mostly in the Stratosphere.
2. Ozone layer lies 55-75 km above the surface of the earth.
3. Ozone absorbs ultraviolet radiation from the Sun.
4. Ozone layer has no significance for life on the earth.
               Which of the above statements are correct?

A.

1 and 3

B.

2 and 4

C.

2 and 3

D.

1 and 4

 
 

Option: A

Explanation :


19:  

The natural vegetation of Savana consists of: 

A.

Tall grass

B.

Scrub jungle

C.

Short grass

D.

Trees

 
 

Option: A

Explanation :


20:  

The much discussed Tehri Dam Project is located in which of the following states?

A.

Madhya Pradesh

B.

Rajasthan

C.

Haryana

D.

Uttaranchal 

 
 

Option: D

Explanation :




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