Water-A Precious Resource

Water Worksheet-1

Multiple-Choice Question:

1. _______ % of all living matter contains water.

(A) 70-90             (B) 20-40             (C) 90-95             (D) 50-70

2. Water has _____ specific heat capacity.

(A) Low                (B) Very low        (C) Very high       (D) None of these

Water Worksheet-2

Multiple-Choice Question:

11. Dissolution of salt in water is a:

(A) Physical process                       

(B) Chemical process

(C) None of these

12. Ice floats on water because:

(A) Ice is heavier than water          (B) Ice is cooler than water

(C) Ice is lighter than water            (D) Ice is a solid

Water Worksheet-3

Multiple-Choice Question:

1. _______ % of earth water is saline water.

(A) 85                   (B) 97                   (C) 90                   (D) 80

2. Which of the following property of water help animals & plants to survive in deserts where temperature is too high?

(A) It can exist in all three phases          

(B) Specific heat

(C) Density