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Biogeography - GK Questions and Answers for competitive exams on Geography | page-6

Questions
26 Which of the following soils is very hard to cultivate ?
A Alluvial
B Black
C Red
D Sandy

Answer: Option [D]

The correct answer is Sandy. Sandy soils is very hard to cultivate. The soil feels gritty between your fingers, your soil is sandy. When rolled in the hand to make a sausage shape, it crumbles and falls apart and won’t hold its shape. Water drains away quickly, though sandy soils can develop a hard pan that impedes drainage.

27 Which soil is formed by deposition of silt brought by rivers ?
A Black
B Alluvial
C Red
D Pod

Answer: Option [B]

The correct answer is Alluvial. The soil formed by the deposition of silt brought by rivers is Alluvial soil. Alluvial soil is the main and important soil that spreads across the river plains. They are formed by deposition of materials or sediments (alluvium) brought in down by rivers that consist of silt, sand, clay, etc.

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28 Which of the following soils is most suitable for cultivation of cereals ?
A Alluvial soils
B Red soils
C Laterite soils
D Pod soils

Answer: Option [A]

The correct answer is Alluvial soils. Alluvial soils as a whole are very fertile. Mostly these soils contain adequate proportion of potash, phosphoric acid and lime which are ideal for the growth of sugarcane, paddy, wheat and other cereal and pulse crops.

29 Which of the following soils is most suitable for cultivation of cotton ?
A Red
B Clayey
C Alluvial
D Regur

Answer: Option [D]

The correct answer is Regur. Regur soil is suitable for cotton cultivation. It is a black coloured soil. It is said be perfect for cotton cultivation. It is rich in iron content.

30 Which of the following types of soils have a marked capacity to retain water ?
A Desert soil
B Laterite soil
C Regur soil
D Pod soil

Answer: Option [C]

The correct answer is Regur soil. Regur soil have a marked capacity to retain water. Black soil is also called Regur soil. It is black in color and ideal for growing cotton. This type of soil is typical of the Deccan trap (Basalt) region spread over North-West Deccan plateau and is made up of lava flows.

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