CBSE Class 6 Social Science: Our Country India - NCERT Solutions

Solution: This section contains multiple questions that are answered individually below.

Solution: The major physical divisions of India are:

1. The Himalayas
2. The Northern Indian Plains
3. The Great Indian Desert
4. The Peninsular Plateau
5. The Coastal Plains
6. The two groups of Islands (Andaman & Nicobar Islands and Lakshadweep Islands).

Solution: India shares its land boundaries with the following seven countries:

1. Pakistan
2. Nepal
3. Bhutan
4. China
5. Bangladesh
6. Sri Lanka
7. Afghanistan

Solution: The two major rivers that fall into the Arabian Sea are the Narmada River and the Tapi River.

Solution: The delta formed by the Ganga and the Brahmaputra rivers is known as the Sundarbans delta. This is the world's largest and fastest-growing delta, famous for its mangrove forests.

Solution: As of the information provided, India has 28 States and 7 Union Territories. The states of Punjab and Haryana share a common capital, which is Chandigarh.

Solution: A large number of people prefer to live in the Northern Plains because these plains are generally flat and level. They are formed by the alluvial deposits brought down by rivers like the Indus, Ganga, Brahmaputra, and their tributaries. This fertile land is excellent for agriculture, providing ample opportunities for settlement and livelihood.

Solution: Lakshadweep is known as a coral island because it is made up of corals. Corals are tiny marine animals called polyps, which secrete a calcareous substance. Over time, these skeletal remains accumulate to form islands.

Solution:

(a) The southernmost Himalayas are known as Shiwaliks.

(b) Sahyadris is also known as the Western Ghats.

(c) The Palk Strait lies between the countries India and Sri Lanka.

(d) The Indian islands in the Arabian Sea are known as Lakshdweep Islands.

(e) The oldest mountain range in India is the Aravali hills.

Solution:

(a) India has an area of about 3.28 million sq. km.

(b) The Greater Himalayas are also known as Himadri.

(c) The largest state in India in terms of area is Rajasthan.

(d) The river Narmada falls into the Arabian Sea.

(e) The latitude that runs almost halfway through India is The Tropic of Cancer (approximately 23.5° N latitude).

Solution:

(i) India belongs to the Northern Hemisphere. While it is also in the Eastern Hemisphere, the primary classification based on the Equator places it in the Northern Hemisphere.

(ii) The island neighbours of India are Sri Lanka and Maldives. These are independent island nations located near the Indian subcontinent.

(iii) The smallest state in India in terms of area is Goa.

(iv) The other name of Middle Himalaya is Himachal. This range lies between the Greater Himalayas (Himadri) and the Outer Himalayas (Shiwaliks).

(v) The island groups affected by the Tsunami in 2004 were the Andaman and Nicobar Islands. The devastating tsunami in 2004 had a significant impact on these islands.

Solution:

(i) India is the second most populous country of the world after China.

(ii) The Himalayan mountains are divided into three main parallel ranges.

(iii) The Great Indian desert lies to the Western part of India.

(iv) Narmada and Tapi are west-flowing rivers that fall into the Arabian Sea.

(v) Lakshadweep islands are located in the Arabian Sea.

(vi) The western coastal plains are very narrow.

Solution:

(i) True. Lakshadweep islands are indeed coral islands.

(ii) False. The western coastal plains are generally narrower than the eastern coastal plains, which are broader.

(iii) True. The Northern Indian plains are situated to the south of the Himalayan mountain ranges.

(iv) True. The Bay of Bengal is located to the east of India.

(v) False. Canada has six time zones, not five.

(vi) False. High concentration of population is typically found in plains and river valleys due to fertile land and water availability, not generally in plateaus.

Solution:

Here is the correct matching:

(i) The Great Himalayas - (e) North (They form the northern boundary of India)

(ii) The Bay of Bengal - (g) East (It lies to the east of India)

(iii) The Arabian Sea - (b) West (It lies to the west of India)

(iv) The Indian Ocean - (a) South (It lies to the south of India)

(v) The Peninsular Plateau - (d) Triangular in shape (It forms the southern, triangular part of India)

(vi) The Eastern Ghats - (c) Broken and uneven (They are discontinuous and broken by rivers)

(vii) The Western Ghats - (f) Continuous (They form a continuous range along the western coast)

Solution: The north-south extent of India, from the northernmost point in Kashmir to Kanyakumari in the south, is approximately 3,200 kilometers.

Solution: The east-west extent of India, from Arunachal Pradesh in the east to Kuchchh in the west, is approximately 2,900 kilometers.