CBSE Class 12 Biology (For Blind) Compartment Question Paper 2020 with Answer Key (September 22)

CBSE CLASS XII Questions

• 1.

  Suggest how a virus-free healthy plant can be obtained from a diseased sugarcane plant.

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• 2.

  Arrange the following rulers in chronological order and choose the correct option :
  I. Kanishka
  II. Mahapadma nda
  III. Samudragupta
  IV. Chandragupta Maurya
  

  • I, III, IV, II
    
  • II, IV, I, III
    
  • III, I, II, IV
    
  • IV, II, III, I
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• 3.

  Choose the correct option from the following to fill in the blank regarding the regions of tiolist leaders of India :
  Bipin Chandra Pal : Bengal; Lala Lajpat Rai : ____

  • Maharashtra
    
  • Gujarat
    
  • Punjab
    
  • Delhi
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• 4.

  Two statements are given below. They are Assertion (A) and Reason (R). Read both the statements carefully and choose the correct option: Assertion (A): River valleys are sparsely populated areas of the world. Reason (R): Water is the most important factor for life.
  

  • Both (A) and (R) are true and (R) is the correct explanation of (A).
    
  • Both (A) and (R) are true, but (R) is not the correct explanation of (A).
    
  • (A) is true, but (R) is false.
    
  • (A) is false, but (R) is true.
    
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• 5.

  Two statements are given below. They are Assertion (A) and Reason (R). Read both the statements carefully and choose the correct option. Assertion (A): In recent decades, the urban population of India has grown rapidly. Reason (R): In India, the workforce is shifting from farm-based to non-farm-based occupations.
  

  • Both (A) and (R) are true and (R) is the correct explanation of (A).
    
  • Both (A) and (R) are true, but (R) is not the correct explanation of (A).
    
  • (A) is true, but (R) is false.
    
  • (A) is false, but (R) is true.
    
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• 6.

  A DNA molecule is 160 base pairs long. It has 30% Guanine. How many Adenine bases are present in this DNA molecule?

  • 48
    
  • 64
    
  • 96
    
  • 192
    
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