Question

Which of the following is used for the purification of water?

• A. it is necessary for existence of life on earth
• B. it is essential for healthy growth of crops
• C. it is needed for everyday activities
• D. all of these

Answer 1

Answer: (A), (B), (C), (D)

The correct options are
A

it is necessary for existence of life on earth

B

it is essential for healthy growth of crops

C

it is needed for everyday activities

D

all of these

All the given options are used to remove impurities from the water.

In boiling, water is heated at high temperature so that all the microorganism get killed.

In filtration, small solids particles get separated with the help of filter paper.

Chlorine tablet acts as a disinfectant and kills the germs present in the water.

Water purifiers at home use UV rays to kill micro-organisms and purify the water.