indian drainage irrigation rivers & projects section 7 MCQ Questions & Answers Detailed Explanation

Answer: (a)

Answer: (c)

The study found that some of the Indian deltas — Brahmani delta in Orissa, and Godavari and Mahanadi in Andhra Pradesh — are at a greater risk as to the rate of sediment Aggradation (raising the level of the delta through sediment deposition) no longer exceeds relative sea-level rise.

While there are no Indian deltas in the peril category (where the Aggradation and compaction of the delta sediments overwhelm the rate of sea-level rise), the Krishna delta in Andhra Pradesh falls in the last category of greater peril.

In the case of the greater peril category, the deltas have virtually no sediment deposition (Aggradation) and/or have very high accelerated compaction of sediments.

Here the relative sea-level rise is about 3 mm per year. The maximum relative sea-level rise of 13-150 mm per year is seen in the Chao Phraya delta in Thailand.

Answer: (d)

Answer: (d)

Answer: (c)

The Tapti River is a river in Central India between the Godavari and Narmada Rivers. It flows in rift valley.

Answer: (a)

1. The Teesta River is a 309 km long river flowing through the Indian state of Sikkim.
2. The Subansiri River is a tributary of the Brahmaputra River in the Indian states of Assam and Arunachal Pradesh, and the Tibet Autonomous Region of China.
3. Lohit River is a river in Arunachal Pradesh in India. It is a tributary to the Brahmaputra River.
4. Dibang River is a tributary river of the Brahmaputra that flows through the northeast Indian states of Arunachal Pradesh and Assam.