[Mission 2023] STATIC QUIZ, 04 March 2023 – Geography

Solution: d)

Ravines in India are a geological feature formed millions of years ago when the peninsular plate pressed against the Himalayas. Almost all of India’s ravines are found in the vicinity of the Vindhyas, with over 60 per cent being in Uttar Pradesh, Madhya Pradesh, Gujarat and Rajasthan, as per the National Remote Sensing Centre, Hyderabad.

However, ravines get aggravated by soil erosion, mostly caused by a flowing waterbody. The adjacent land gets eroded to form narrow depressions with sharp slopes. Over time, ravines widen, rendering land uncultivable and infertile with the erosion of the topsoil.

Solution: a)

The folds of the Great Himalayas are asymmetrical in nature.

The part of the Himalayas lying between Sutlej and Kali rivers is known as Kumaon Himalayas.

The longitudinal valley lying between lesser Himalaya and the Shiwaliks are known as Duns.  Ex Chandigarh-Kalka dun, Nalagarh dun, Dehra Dun, Harike dun and the Kota dun, etc. Dehra Dun is the largest of all the duns with an approximate length of 35-45 km and a width of 22-25 km.

Solution: b)

Statement 1:  Limestones can’t bear the heavy weight of Himalayas. The core is actually made of granite rocks.

Statement 2: Narmada river is one of the rivers in India that flows in a rift valley, flowing west between the Satpura and Vindhya ranges.

Statement 3:  The Deccan Plateau is a large triangular plateau, bounded by the Vindhyas to the north and flanked by the Eastern and Western Ghats.

This region is mostly semi-arid as it lies on the leeward side of both Ghats. Much of the Deccan is covered by thorn scrub forest scattered with small regions of deciduous broadleaf forest.

Solution: a)

A complex volcano, also called a compound volcano, is defined as one that consists of a complex of two or more vents, or a volcano that has an associated volcanic dome, either in its crater or on its flanks.

Solution: b)

North Atlantic Drift is a warm current.