Question 1

Which of the following mountain ranges is the oldest fold mountain system in India?

Accepted Answer

The Aravalli range is one of the oldest fold mountain systems in the world and in India. It runs approximately 692 km in a southwest direction, starting in Delhi, passing through southern Haryana and Rajasthan, and ending in Gujarat.

Question 2

What is the total length of the Himalayan mountain range from west to east?

Accepted Answer

The Himalayan mountain range spans an approximate distance of 2,500 kilometers from west (Indus gorge) to east (Brahmaputra gorge) in an arcuate shape.

Question 3

The northern plains of India are formed by the alluvial deposits of which three major river systems?

Accepted Answer

The northern plains of India are formed by the interplay of three major river systems, namely: the Indus, the Ganga, and the Brahmaputra along with their tributaries.

Question 4

Which longitudinal division of the Himalayas lies between the Kali and Teesta rivers?

Accepted Answer

The part of the Himalayas lying between the Kali and Teesta rivers is known as the Nepal Himalayas.

Question 5

Which part of the Peninsular Plateau is characterized by black soil known as Regur?

Accepted Answer

The Deccan Trap region, formed by volcanic activity, is composed of basaltic rocks and is predominantly covered with black soils, locally known as Regur.

Structure and Physiography — NCERT Class 11 Geography Important Questions & Revision Notes