NCERT Solutions for Class 11 Geography (India : Physical Environment) Chapter 2 Structure and Physiography

NCERT
SOLUTIONS
CLASS - 11th

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Book : India : Physical Environment Ncert Solutions | Chapter - 2 Social Science Geography

Class : 11th

Subject : Geography

Chapter : 2

Chapter Name : Structure and Physiography

Q1 Choose the right answer from the four alternatives given below.

(i) In which part of Himalayas do we find the Karewa formation?

(a) North-eastern Himalayas

(b) Himachal-Uttarakhand Himalayas

(c) Eastern Himalayas

(d) Kashmir Himalayas

(ii) In which of the following states is Loktak lake situated?

(a) Kerala

(b) Uttarakhand

(c) Manipur

(d) Rajasthan

(iii) Which one of the water bodies separates the Andaman from the Nicobar?

(a) 11° Channel

(b) Gulf of Mannar

(c) 10° Channel

(d) Andaman Sea

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Book : India : Physical Environment Ncert Solutions | Chapter - 2 Social Science Geography

(iv) On which of the following hill range is the ‘Dodabeta’ peak situated?

(a) Nilgiri hills

(b) Anaimalai hills

(c) Cardamom hills

(d) Nallamala hills

Answer.

(i) (d) Kashmir Himalayas

(ii) (c) Manipur

(iii) (a) 11° Channel

(iv) (a) Nilgiri hills

Q2 Answer the following questions in about 30 words.

(i) If a person is to travel to Lakshadweep, from which coastal plain does he prefer and why?

(ii) Where in India will you find a cold desert? Name some important ranges of this region.

(iii) Why is the western coastal plain is devoid of any delta?

Answer.

(i) That person would choose to start travelling from the Western Coastal plains. Since the
Lakshadweep islands are situated in Arabian Sea. Its distance is lowest from the west side of
Coast. Hence, from that side less time is needed to travel to the island.

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Book : India : Physical Environment Ncert Solutions | Chapter - 2 Social Science Geography

(ii) In the Kashmir Himalayas’ North Eastern side, the only cold desert of India is situated. It lies
between Karakoram range and Greater Himalayas section.

(iii) In the Western Coastal plain, the slopes are steep and plains are narrow. The rivers of these
regions flow rapidly in one part. Due to this, they are unable to form any Delta. That’s why
western coastal plain is devoid of any delta.

Q3 Answer the following questions in not more than 125 words.

(i) Make a comparison of the island groups of the Arabian Sea and the Bay of Bengal.

(ii) What are the important geomorphological features found in the river valley plains?

(iii) If you move from Badrinath to Sunderbans delta along the course of the river Ganga, what
major geomorphological features will you come across?

Answer.

(i)

Arabian Sea Island Group Bay of Bengal island Group

It consists of around 36 islands out of which It consists of approximately 572 islets or
11 are currently inhabited. islands.

They are situated between the longitude of They are scattered between the longitude of
8°N-12°N and 71°E -74°E. 6°N-14°N and 92°E -94°E.

The Eleventh Degree Channel divides these The entire island group is divided into two
islands. In its north lies Amini island and in its categories- in north lies Andaman and South
south lies Cannanore island. lies Nicobar.

The whole group is made up of Coral These are the elevated parts of submarine
deposits. mountains.

The largest island is Minicoy whose area is The Labyrinth island and Ritchie’s
453 sq km. archipelago are two main island groups.

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Book : India : Physical Environment Ncert Solutions | Chapter - 2 Social Science Geography

(ii) Those rivers that bring the alluvial deposits, it results in the formation of river valley plains.
Few geomorphological features of the river valley plains are:

● Khadar: It is made up of alluvial deposits which are new. They are fertile lands and are
prone to floods.
● Bhangar: It is made up of old alluvium. They are not fertile and less prone to floods.
● Bhabar: It is a narrow belt that ranges between 8 to 10 km parallel to the foothills of
Shivaliks at the slope’s break.
● Terai: It lies in the south of Bhabar belt. It’s approximate width is 10 to 20 km. From here,
most of the rivers and streams re-emerge. It creates swampy and marshy conditions,
known as Terai.

(iii) Badrinath is a place that lies along the Ganga . On the mouth of Brahmaputra and Ganga
river lies Sundarban delta in the Bay of Bengal. If you move from Badrinath to deltas of
Sundarbans, you would see several geomorphological features. You would come across valleys
of V-shape, waterfalls, georges, rapids, etc. You would also spot Ganga’s tributaries meeting it.
As you enter the Northern plains, you will spot depositional and erosional landforms like
meanders, sandbars, etc.

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