CBSE Class 12 Air Conditioning And Refrigeration - III Question Paper 2019 with Answer Key (February 16)

CBSE CLASS XII Questions

• 1.

  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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• 2.

  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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• 3.

  Which one of the following is an example of forest-based industry?

  • Textiles
    
  • Sugar
    
  • Lac
    
  • Edible oil
    
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• 4.

  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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• 5.

  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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• 6.

  Which one of the following is the main objective of 'Haryali Project'?

  • Water conservation for irrigation and fisheries
    
  • Water conservation for industries
    
  • Surface water availability for transport
    
  • Surface water availability for recreation
    
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