Water

_____ percent of water is present in the ground.

• 97%

• 2%

• 0.7%

• 0.3%

The network of pipes which carries waste water to water treatment plant is called _____.

• Sewage

• Sewerage system

• Rainwater harvesting

• Conservation of water

One of the important factors, that can lead to a scarcity of water, is -

• Excessive rainfall

• Afforestation

• Deforestation

• Processing of sea water

Due to increase in population, the demand for usable water has increased whereas it's availability has _______.

• Increased

• Decreased

The top level of the ground water is called______.

• Pure water

• Water table

• Streams

• None

Use of _______ and _____ for irrigation reduces wastage of water.

• Sprinklers, drip irrigation

• Sprinkler, pipes

• Drip irrigation, Handpump water

• Drip irrigation, sea water

Three methods of drawing out ground water are-

• Well, tubewell, Handpump

• River water, well, dam

• Tube well, sea water, river

• Handpump, glaciers, water treatment plant

Which among the following is a method to avoid wastage of water?

• Using water sprinkler for irrigation

• Keep the tap running while brushing teeth

• Do not repair the leaking taps and pipes

• Throw the left over drinking water in sink

Only ______ percent of water on the earth is fresh water.

• 97%

• 3%

• 0.7%

• 0.3%

Unnecessary, cutting down of trees will cause an increase in the level of ________ gas, which causes global warming.

• Carbon dioxide

• Oxygen

• Nitrogen

• Hydrogen