Tag: soil : our life

Questions Related to soil : our life

Mark the correct statement about desert soil.

evs soil : our life soil profile soil- our life soil and crops

  1. This soil is rich in phosphates but deficient in nitrogen.

  2. It is suitable for the cultivation of drought-resistant crops.

  3. Desert soil is found in the north-western parts of India.

  4. All of the above

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Correct Option: D

The least porous soil among the following is 

evs soil : our life soil profile soil- our life soil and crops

  1. Loamy soil

  2. Silty soil

  3. Clay soil

  4. Peaty soil

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Correct Option: C

Soil formed after leaching and rich in Al and Fe is

evs soil : our life soil profile soil- our life soil and crops

  1. Alluvial

  2. Podosol

  3. Laterite

  4. None of the above

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Correct Option: C
Explanation:

Laterites are formed by leaching of parent sedimentary rocks. They  are rich in Al and Fe and are found in wet and hot tropical areas. The color of the soil is rusty red due to high Fe content.

So, the correct answer is 'Laterite'

Soil suitable for cultivation of tobacco, vegetables and paddy

evs soil : our life soil profile soil- our life soil and crops

  1. Black soil

  2. Red soil

  3. Alluvial soil

  4. All of the above

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Correct Option: B
Explanation:

Red soil is a mixture of loamey and yellow soils. It is suitable for the cultivation of tobacco, vegetables and paddy.

Deep black soil is considered to be highly productive due to high proportion of

evs soil : our life soil profile soil- our life soil and crops

  1. Silt and earthworm

  2. Clay and humus

  3. Gravel and Ca$^{2+}$

  4. Sand and Zn$^{2+}$

Show answer
Correct Option: B
Explanation:

Black soil is dark brown or black colour soil. The black colour is due to organic matter and clay content. Such soils are compact with good hydration, but little aeration; chemically they are very fertile, because of rich mineral content. Rich mineral content of black soils is due to clay, which adsorbs minerals on its surface. Clay and humus produce colloidal complex for holding water and ions and forming soil crumbs.

Deep black soil is considered to be highly productive due to high proportion of


evs soil : our life soil profile soil- our life soil and crops

  1. Silt and earthworm

  2. Clay and humus

  3. Gravel and Ca++

  4. Sand and Zn

Show answer
Correct Option: B
Explanation:

(b) Black soil predominantly with clay and humus. This soil is very fertile because most of minerals are present in it. 

River water deposits

evs soil : our life soil profile soil- our life soil and crops

  1. Loamy soil

  2. Alluvial soil

  3. Laterite soil

  4. Sandy soil

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Correct Option: B

Deep black soil is productive, due to high proportion of

evs soil : our life soil profile soil- our life soil and crops

  1. Sand and Zinc

  2. Gravel and Calcium

  3. Clay and Humus

  4. Silt and Earthworm

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Correct Option: C

Soil rich in Fe and Al is due to excessive leaching is

evs soil : our life soil profile soil- our life soil and crops

  1. Alluvial

  2. Laterite

  3. Loam

  4. Both A and B

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Correct Option: B

Red soils of India are

evs soil : our life soil profile soil- our life soil and crops

  1. Laterite soil

  2. Deficient in lime, Mg, P and K 

  3. Rich in iron and organic matter

  4. All of the above

Show answer
Correct Option: A