Origin of India's External Drainage Systems

Q.

What is meant by a water divide? Give an example.

Q. Rivers in the external drainage system, generally originate from the highlands between two river-systems known as water divide or watershed.

1. True
2. False

Q. Peninsular rivers are perennial rivers.

1. True
2. False

Q. The Indus river deposits around ______ of silt into the Arabian Sea annually.

1. six hundred million tons
2. five hundred million tons
3. three hundred million tons
4. four hundred million tons

Q. Select the correct options with respect to the rivers of the external drainage system in India.

1. Himalayan rivers are longer in length, have more water, and have a larger catchment area as compared to their peninsular counterparts.
2. Peninsular rivers flow through hard rocks and hence deposit more silt than Himalayan rivers in the oceans annually.
3. Himalayan rivers are perennial while peninsular rivers are seasonal.
4. Himalayan rivers make small deltas while peninsular rivers make larger deltas.