STD-10 SOCIAL-SCIENCE CH-11 QUIZ (ENG-MED)

 STD-10 SOCIAL-SCIENCE (ENG-MED)

CH-11 India: Water Resource8s

Short Question

Q 1. ‘If there is water, there is life.’ Give reason.

ANS: 

Water is a natural as well as limited resource. No life on earth can be imagined without water. Entire biotic world uses water to sustain itself. We would die and the world population will exhaust if water is not available for drinking. Water hag no alternative and it is used in huge quantity for a very large number of activities. The prosperity of every nation depends on its agriculture and its produce depends on amount of water. Water is also required for, domestic uses and in industries. Owing to all these reasons we, can rightly say if there is water, there is life.

Q 2. State the sources of water and define them.

ANS: There are three sources of water. They are

1. Rainwater
2. Surface water
3. Groundwater.

Rainwater: Rain is the original and primary source of water on the earth. Rivers, lakes, streams, wells, etc. are all considered secondary sources. All these secondary sources exist due to rainfall.

Surface water: The water found on the surface of the earth in the form of rivers, lakes, ponds, sea, streams, etc. is called surface water.

Groundwater: It has an important place among the source of water. It is obtained due to the process of water absorbed by the lower strata of the land. The volume of groundwater is unlimited. Groundwater is utilised maximum for irrigation.

Q 3. State the statistics of area under irrigation.

ANS: Our 38% of net sown area is under irrigation. Out of the total sown area of Mizoram, only 7.3% area is under irrigation whereas in case of Punjab it is 90.8%. More than 40% area of the total area sown is under irrigation in Punjab, Haryana, Uttar Pradesh, Bihar, Jammu and Kashmir, Tamil Nadu and Manipur.

Q 4. A proper irrigation system is required in India. Give reason.

ANS: Rain is the main source of water in India. But, the monsoon season of India is very short. Also rain is quite irregular and uncertain. Sometimes monsoon begins early and sometimes it comes late. Thus, the irregular monsoon season may harm and damage the crops. Therefore, a proper irrigation system is required in India for growing crops, and therefore, quality and productivity of crops can be increased.