Water A Precious Resource - UPSC Sci & Tech Free MCQ Test with solutions

The ground water between two layers of rocks is called aquifer. It bears permeable rocks.

World water day is celebrated on 22 March to enumerate importance of drinking water.

Water is a compound as it contains hydrogen and oxygen in fixed ration by mass.

Water is chlorinated after water work to kill the germ present in it as chlorine acts as disinfectant.

There is acute shortage of water throughout the world due to excessive population growth which leads to overuse and misuse of water.

About 60% of our body consists of water. It forms the main constituent of cell and blood.

Rainwater harvesting focuses on collecting, storing, and managing rainwater to prevent wastage and to recharge groundwater. Its primary purpose is water conservation, not creating new water or increasing rainfall. Hence, option (a) is the correct answer.

In India, agricultural sector is major user of water as plants require water at regular interval of time.

There is acute shortage of drinking water world over due to growing population and overuse in other activities.

Drip irrigation is a form of irrigation that saves water and fertilizer by allowing water to drip slowly to the roots of many different plants, either onto the soil surface or directly onto the root zone, through a network of valves, pipes, tubing, and emitters.