Which of the following is a cause for the decline in groundwater levels?

1. Irregular and erratic rainfall
2. Urbanisation
3. Loss of vegetative cover
4. All of the above.

Sprinkler irrigation is also known as ……………. .

1. Seepage irrigation
2. Overhead irrigation
3. Protected irrigation
4. Nozzle irrigation

Assertion (A): Cherrapunji, which receives about 11,000 mm of rainfall annually, suffers from acute shortage of drinking water.

Reason (R): Most of the rain falling on the surface tends to flow away rapidly, leaving very little for the recharge of groundwater.

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.

……………. is not a conventional means of irrigation.

1. Furrow irrigation
2. Wells
3. Tanks
4. Inundation canals