physiography geomorphology of india section 8 MCQ Questions & Answers Detailed Explanation

Answer: (a)

Narmada is the only river in India that flows in a rift valley, flowing west between the Satpura and Vindhya ranges. The Tapti River and Mahi River also flow through rift valleys, but between different ranges.

One theory is that the area in which the fossils are located, i.e., the Narmada Valley near Mandla, was actually a deep inundation of the sea into peninsular India till the Post- Cambrian Tertiary age, about 40 million years ago.

This means that Narmada was a very short river that terminated in the inland sea above Mandla and that the recession of the sea caused geological disturbances, which created the present rift valley through which the Narmada River and Tapti River flow in their present journey to the Arabian Sea.

Answer: (a)

• Coco channel
• Narcondam Island
• Barren Island
• Little Andaman

Answer: (a)

Indian Standard Time is calculated on the basis of 82.5° E longitude, from a clock tower in Mirzapur (25.15°N 82.58°E) (near Allahabad in the state of Uttar Pradesh) which is nearly on the corresponding longitude reference line.

Answer: (a)

Geothermal Energy is the heat from the Earth. It is Clean and sustainable. Resources of geothermal energy range from the shallow ground to hot water and hot rock found a few miles beneath the Earth’s surface.

Answer: (d)

Namcha Barwa, a mountain in the Tibetan Himalaya, is the eastern anchor of the entire Himalayan mountain chain. It is the highest peak of its own section as well as Earth’s easternmost peak over 7,600 metres.

It stands inside the Great Bend of the Yarlung Tsangpo River as the river enters its notable gorge across the Himalaya, emerging as the Dihang and becoming the Brahmaputra.

Answer: (d)