CBSE Class 12 Chemistry Question Paper 2013 with Answer Key (March 11, Code - 56/1/1)

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.

  Which of the following equations is NOT a Linear Differential Equation?

  • \((1 + x^2) \, dy + 2xy \, dx = \cot x \, dx\)
    
  • \(y + \frac{d}{dx}(xy) = x(\sin x + \log x)\)
    
  • \(x(1 + y^2) \, dx - y(1 + x^2) \, dy = 0\)
    
  • \(y \, dx - (x + 3y^2) \, dy = 0\)
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• 3.

  Read the following statements carefully regarding Al-Biruni’s ‘‘Kitab-ul-Hind’’ and choose the correct option :
  I. It is a voluminous text of eighty chapters.
  II. It is written in Arabic, Urdu and Hindavi.
  III. Each of its chapters begins with a question.
  IV. It covers many subjects like astronomy, festivals, etc.
  

  • I, III and IV are correct.
    
  • I, II and III are correct.
    
  • I, II and IV are correct.
    
  • II, III and IV are correct.
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• 4.

  Match Column A with Column B regarding important Committees of the Constituent Assembly and its Presidents and choose the correct option :
  

  

  • a-iv, b-iii, c-ii, d-i
    
  • a-i, b-ii, c-iii, d-iv
    
  • a-iii, b-iv, c-i, d-ii
    
  • a-iv, b-i, c-ii, d-iii
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• 5.

  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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• 6.

  Choose the correctly matched pair from the following : (Crop) - (Leading Producer State)

  • Maize - Bihar
    
  • Jute - West Bengal
    
  • Groundnut - Rajasthan
    
  • Sunflower - Punjab
    
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