100+ UPSC General Knowledge Questions and Answers - 1

Question: 1

What is meant by water cycle?

The circulation of water from the earth’s surface to the atmosphere and then back to earth is called water cycle.

Question: 2

What is water pollution?

The undesirable change in the physical chemical and biological characteristics of water that affects the health of human beings, animals and plants is called water pollution.

Question: 3

What are the three physical states of water?

The three physical states of water are solid (ice), liquid (water) and gas (vapour).

Question: 4

What is latent heat of vapourisation?

The heat energy stored in steam, when it is converted from water, is called latent heat of vapourisation. It is value is 537 cal/g.

Question: 5

What is rain water harvesting?

Saving the rain water in the earth and using it without wasting is called rain water harvesting.