11. Why are the northern plains very productive?
12. Where and how are distributaries formed?
13. How did Punjab get its name?
14. Why is the terai region wet, swampy and marshy?
15. What is bhangar? How does it differ from khadar?
16.
Which are the Central Highlands?
17. Where is Chotanagpur Plateau located?
18.
The Deccan Plateau is a triangular landmass bounded on three sides by hills, which are they?
19.
The Western Ghats are continuous but they can be crossed through passes. Which are they?
20.
Where do the Western Ghats and Eastern Ghats meet?
21.
What type of land surface is found in the Indian desert?
22.
Why are the eastern coastal plains wide and level?
23. What is the importance of the Andamans and Nicobar islands to India? Give two reasons
24.
What were the Lakshadweep islands formerly known as?
Answers
Answer:
11. The northern plains of India are the most productive since they have the fertile alluvial soil which supports plant life greatly and also most of the perennial rivers of India are located in the northern part of the country.
12. River channels near the mouth of a river become choked (filled in) with sediments. At some point the river breaks out another channel to the ocean or lake. When this happens several times, a distributary system develops.
13. The word Punjab is a compound of two Persian words, panj (“five”) and āb (“water”), thus signifying the land of five waters, or rivers (the Beas, Chenab, Jhelum, Ravi, and Sutlej).
14. Terai is the region which is marshy and swamp land extending between Yamuna and Brahmaputra rivers. It is marshy probably because this region is dulated by water of the rivers through out the year. These rivers are perenial and the continuous flow of water through these lands make them marshy and swampy.
15. Bhangar: It covers large parts of northern plains. It is composed of old alluvial soil. It contains calcareous deposits locally known as 'Kankar'. Soil is not very fertile. Khadar: Ii is also present in northern plains like that of Bhangar.
Explanation:- difference between bhangar and khadar are:-
KHADAR (New):-
1. The khadar soils are found in the low areas of the valley, bottom of a valley which are flooded every year.
2. These soils are finer in texture.
3. The khadar is light in colour and is composed of newer deposits.
BHANGAR (old):-
1. The Bhangar soils are found in higher reaches, about 30 m above the flood level.
2. These soils are coarser in texture.
3. The bhangar is composed of lime nodules or kanker and has a clayey composition.
16. The central highlands—actually a part of the Himalayan chain—include the main Hindu Kush range. Its area of about 160,000 square miles (414,000 square km) is a region of deep, narrow valleys and lofty mountains, some peaks of which rise above 21,000 feet (6,400 metres).
17. Chota Nagpur, plateau in eastern India, in northwestern Chhattisgarh and central Jharkhand states.
18. Three Prominent hill ranges from the west to east are the Garo, the Khasi and the Jaintia Hills. The Western Ghats and the Eastern Ghats mark the western and the eastern edges of the Deccan Plateau respectively. Western Ghats lie parallel to the western coast. They are continuous and can be crossed through passes only.
19. The Western Ghats and the EasternGhats mark the western and the eastern edges of the Deccan Plateau respectively. Western Ghats lie parallel to the westerncoast. They are continuous and can be crossed through passes only.
20. The Western Ghats and Eastern Ghats meet at the Nilgiri Hills.
21. The desert presents an undulating surface, with high and low sand dunes separated by sandy plains and low barren hills, or bhakars, which rise abruptly from the surrounding plains.
22. Eastern coastal plains are wide because the large rivers make wide deltas on the Eastern Coastal Plains. But the western side rivers do not make any deltas on the West Coast. ... The WesternCoastal Plain is formed by coarse grained soil. It is infertile and agriculturally not prosperous except in the Malabar Coast.
23. India's Navy chief, Admiral R K Dhowan recently acknowledged that the Andaman and Nicobar Islands are a “very very important aspect” of India's security, acting as extended arms of the country. Dhowan said that India needed to deploy naval assets to the islands for surveillance in important sea lines of communication.
24. Lakshadweep, formerly (1956–73) Laccadive, Minicoy, and Amindivi Islands, union territory of India. It is a group of some three dozen islands scattered over some 30,000 square miles (78,000 square km) of the Arabian Sea off the southwestern coast of India.
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