CBSE Class 12 Electronic Technology Question Paper 2023 with Answer Key (February 16, Set 4 - 344)

CBSE CLASS XII Questions

• 1.

  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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• 2.

  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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• 3.

  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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• 4.

  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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• 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.

  Which of the following types of land was cultivated every year without leaving it fallow during the reign of Akbar ?

  • Chachar
    
  • Parauti
    
  • Polaj
    
  • Banjar
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