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41.

Now one agrarian person can easily produce food for ______ agrarians:

A.	60 - 70	B.	70 - 80
C.	90 - 100	D.	100 - 200

42.

In 1980 AD only _______ % of the world population was urbanized:

A.	2.50%	B.	3.50%
C.	4.50%	D.	6.50%

43.

_______ is the most refined type of soil:

A.	Clay	B.	Silt
C.	Sand	D.	None of these

44.

Clay ________ water to perculate as compared to other type of soils:

A.	Resists	B.	Allows
C.	Both (a) and (b)	D.	None of these

45.

Mixture of clay, silt and sand is known as ________:

A.	Black Soil	B.	Loam
C.	Mixed Soil	D.	None of these

46.

Black soil is formed due to ________ :

A.	Eruption of volcanoes	B.	Deposition of Rivers
C.	Mixing of Soil	D.	None of these

47.

Clack soil is formed due to _________ :

A.	Cotton	B.	Rice
C.	Wheat	D.	Sugarcane

48.

Cotton requires __________ soil and frost free climate for cultivation:

A.	Black Soil	B.	Silt
C.	Sand	D.	None of these

49.

Cultivation of rice demands at least ________ inches of rain fall:

A.	25	B.	35
C.	45	D.	55

50.

Though 'Malneutrition' and 'Undernutrition' in Pakistan, abnormal intake of _______ is commonly observed:

A.	Sugar	B.	Protein
C.	Minerals	D.	Vitamins