Mountains, Plateaus and Plains

41.	On what percentage of the total area of the lithosphere is the extension of the plain found?
	A. 26%’
	B. 33%’
	C. 41%’
	D. 51%’ Option”C” is correct

42.	Ground is counted in which category of land forms?
	A. First class
	B. second class
	C. third grade
	D. none of these Option”B” is correct

43.	Approximately what percentage of the crops and food items produced in the world is produced in the plains?
	A. 65%’
	B. 70%’
	C. 85%’
	D. 95%’ Option”C” is correct

44.	What percentage of the total population of the world lives in the plains?
	A. 50%’
	B. 65%’
	C. 71%’
	D. 90%’ Option”D” is correct

45.	Which of the following land forms is known as the ‘Cradle of Civilization’?
	A. Mountain
	B. hill
	C. Plateau
	D. field Option”D” is correct

46.	In what type of deposits is the Loess plain of northwestern China made?
	A. from lava deposits
	B. accumulation of sand and dust
	C. from the compaction of the soil
	D. none of these Option”B” is correct

47.	What are the residual mounds of resistant rocks found here and there in the wind-eroded plains called?
	A. monednock
	B. inselberg
	C. humus
	D. None of these Option”B” is correct

48.	What are the residual dunes located here and there in the karst plains called?
	A. monednock
	B. inselberg
	C. humus
	D. None of these Option”C” is correct

49.	The remnants of resistant rocks found here and there in the river unwashed plain or Peneplain are called –
	A. monednock
	B. inselberg
	C. humus
	D. None of these Option”A” is correct

50.	Peneplain is formed by which process?
	A. snow
	B. wind
	C. River
	D. Karst Option”C” is correct

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