Question

Assertion (A): Three - fourth of the Earth’s surface is covered with water, but only small

proportion in form of fresh water can be put to use.


Reason(R): It is predicted that by the year 2025, nearly 2 billion people will live in

absolute water scarcity.


a. Both A and R are true and R is an explanation of A

b. Both A and R are false

c. Both A and R are true but R is not an explanation of A

d. A is correct statement but R is false​

Answer 1

Answer:

Find the moment of 25 N force about

point 'o'

( Refer the given fig.)

(1 Point)

3 m

O

25 N

8.33 Nm (clockwise)

75 Nm (clockwise)

8.33 Nm (anticlockwise)

75 Nm (anticlockwise)

Answer 2

Both A and R are true but R is not an explanation of A.

• Both the statements about three fourth surface coverage of earth by water, and the water scarcity that will be faced by nearly 2 billion people by 2025, are absolutely true.
• Now, the proper reason of the given assertion (A) is, most of the available water is saline water from the different oceans and this saline water is unusable in most of the cases. That's why, we have to use the small portion of global water which is in usable fresh water form.
• The reason (R) is an indirect consequences of the given assertion (A). Due to the continuous water wastage, extreme consumption and less availability (as mentioned in assertion), we will face major water scarcity in the coming days.