physiography geomorphology of india section 5 MCQ Questions & Answers Detailed Explanation

Answer: (a)

Answer: (b)

Length of coastline of India including the coastlines of Andaman and Nicobar Islands in the Bay of Bengal and Lakshadweep Islands in the Arabian Sea is 7517 km.

Length of Coastline of Indian mainland is 6100 km. Coastline of Indian mainland is surrounded by Arabian Sea in the west, Bay of Bengal in the east, and Indian Ocean in the south.

The long coastline of India is dotted with several major ports such as Kandla, Mumbai, Navasheva, Mangalore, Cochin, Chennai, Tuticorin, Vishakhapatnam, and Paradip.

Answer: (b)

Deccan traps are formed by the vast outpouring of basic lava from many linear fissures developed in the earth’s crust.

This outpouring was of the quiet type and hence did not create any volcanic domes. It just spread across the surface. This outpouring was in many active stages followed by periods of quiescence.

This outpouring took place around 65 million years ago when India was near present placed Madagascar and during its movement towards the north, it passed over Reunion Hotspot.

Presently this hotspot is dormant in nature. This outpouring lasted for 5million years approx according to the latest study.

Answer: (a)

For most part of India, topographic maps are available which are prepared by the Survey of India. To identify a map of a particular area, a map numbering system has been adopted by Survey of India.

Answer: (d)

In geology, a nappe is a large sheet-like body of rock that has been moved more than 2 km or 5 km from its original position.

Nappes form during continental plate collisions when folds are sheared so much that they fold back over on themselves and break apart.

The Kashmir Valley has been described as a great synclinal (Wadia, 1975), seated on the back of a vast nappe, Kashmir nappe.

Answer: (d)

The Tarai region represents a marsh like landscapes because it is a zone of seepage where the Lime Sand, Silt and Clay are deposited by the emerging Streams.