Assertion (A): For farmers rainfall is still the most important source of water.

Reason (R): Irrigation canals and tanks have been constructed by rulers since ancient times.

1. Both A and R are true and R is the correct explanation of A.
2. Both A and R are true but R does not explain A.
3. A is true but R is false.
4. A is false but R is true.

You have to maintain one public park in your colony. Which method of irrigation would you prefer?

1. Furrow irrigation
2. Spray irrigation
3. Drip irrigation
4. Sprinkler irrigation

Give two points of difference between 'surface water' and 'ground water'.

Give a geographical reason for each of the following:

(i) Need to adopt different means of irrigation.

(ii) Need for conserving water.

(iii) Man is responsible for water crisis.