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Soil in india Geography Objective Questions (MCQs)- Clear IAS Exam

Soil in india Geography Objective Questions (MCQs)- Clear IAS Exam

Soil in india Geography Objective Questions (MCQs)- Clear IAS Exam

Q1. Consider the following statements about Soil formation;/मृदा गठन के बारे में निम्नलिखित पर विचार करें

1. Study of soils in their natural environment is called Pedogenesis./अपने प्राकृतिक वातावरण में मिट्टी का अध्ययन पैडोजेनेसिस कहलाता है।

2. The parent material determines the colouration, mineral composition and texture of the soil./मूल सामग्री रंग, खनिज संरचना और मिट्टी की बनावट को निर्धारित करती है।

3. Steep slope encourages soil erosion while the  areas of low relief results in deposition of soils./खड़ी ढलान मिट्टी के  कटाव को बढ़ावा देती है जबकि कम ढलान के छेत्रों में मृदा एकत्रित हो जाती है

Which of the above statement/s is/are correct:

(a) only 1

(b) 1 and 2

(c) 2 and 3

(d) 1,2,3

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Ans. C is correct.

  • Statement 1 is not correct study of soils in their natural environment is called Pedology not Pedogenesis .
  • Statement 2 is correct  The parent material determines the colouration, mineral composition and texture of the soil.
  • Statement 3 is correct Steep slope encourages soil erosion and hinders soil formation (Chambal ravines)whereas the  areas of low relief experience deposition of soils(Indo-Gangetic plain).

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Q2. Consider the following statements about Soil profile:

1. Two different parent materials may develop the same soil in the same type of climate.

2. Horizon B has organic matter incorporated with mineral matter, nutrient, water.

3. Under these three horizons is the  parent rock or the bedrock.

Which of the above statement/s is/are correct:

(a) only 1

(b) 1 and 2

(c) 1 and 3

(d) 1,2,3

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Ans. C is correct.

  • Statement 1 is correct Two different parent materials may develop the same soil in the same type of climate.
  • Statement 2 is not correct Horizon B has some organic matter but mineral matter is noticeably weathered. Horizon A has organic matter incorporated with mineral matter, nutrient, water.
  • Statement 3 is correct Underneath three horizons (A,B,C) , there is the rock which is also known as the parent rock or the bedrock.

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Q3. Consider the following statements about Alluvial Soil:

1. It is the largest soil group which covers 40 per cent of the total area of the country.

2. Because of its loamy nature, the soil is porous.

3. Alluvial soil has high nitrogen, but has low Potash, phosphoric acid and alkalies.

Which of the above statement/s is/are correct:

(a) only 1

(b) 1 and 2

(c) 1 and 3

(d) 1,2,3

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Ans. B is correct.

  • Statement 1 is correct  It is largest soil group covering 40 per cent of the total area of the country.
  • Statement 2 is correct  The soil is porous because of its loamy (equal proportion of sand and clay) nature and provides good drainage and other conditions favorable for agriculture.
  • Statement 3 is not correct Alluvial soil has low nitrogen, adequate Potash, phosphoric acid and alkalies.

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Q4. Consider the following statements about Black soil:

(a) It is mainly found in region of high temperature and high rainfall.

(b) It Covers 30 percent of total geographical area of the country.

(c) It swells and become sticky when wet and shrink when dried thus develop wide cracks.

Which of the above statement/s is/are correct:

(a) only 3

(b) 1 and 2

(c) 1 and 3

(d) 1,2,3

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Ans. A is correct.

  • Statement 1 is not correct   It is found in region of high temperature and low rainfall.  
  • Statement 2 is not correct  It covers 16.6 percent ( not 30)of total geographical area of the country.
  • Statement 3 is correct  They swell and become sticky when wet and shrink when dried. So, during the dry season, these soil develop wide cracks.

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Q5. Consider the following statements:

1. The red soils are mostly loamy and hence retain water like the black soils.

2. Red soil occupies about 10.6 per cent of the total area of the country.

3. Laterite soils are formed under conditions of high temperature and heavy rainfall with alternate wet and dry periods.

Which of the above statement/s is/are correct:

(a) only 1

(b) 1 and 2

(d) 2 and 3

(d) 1,2,3

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Ans. C is correct.

  • Statement 1 is not correct The red soils are mostly loamy and hence cannot retain water like the black soils.
  • Statement 2 is correct  The red soil occupy about (10.6 per cent) of the total area of the country.
  • Statement 3 is correct Laterite soils are formed under conditions of high temperature and heavy rainfall with alternate wet and dry periods.

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