CBSE Class 12 Biology Question Paper 2013 with Answer Key (March 15, Code - 57/1/1)

CBSE CLASS XII Questions

• 1.

  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
    
  View Solution

  ---

• 2.

  Two statements labelled as Assertion (A) and Reason (R) are given below. Read them carefully and choose the correct option :
  Assertion (A) : The Sepoys proclaimed Bahadur Shah Zafar as their leader in the Revolt of 1857.
  Reason (R) : Bahadur Shah Zafar’s acceptance gave legitimacy to the Revolt of 1857.
  

  • Both Assertion (A) and Reason (R) are true and Reason (R) is the correct explation of the Assertion (A).
    
  • Both Assertion (A) and Reason (R) are true, but Reason (R) is not the correct explation of the Assertion (A).
    
  • Assertion (A) is true, but Reason (R) is false.
    
  • Assertion (A) is false, but Reason (R) is true.
  View Solution

  ---

• 3.

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

  • Textiles
    
  • Sugar
    
  • Lac
    
  • Edible oil
    
  View Solution

  ---

• 4.

  Which one of the following institutions constructed the 'Golden Quadrilateral Project'?

  • National Highways Authority of India
    
  • State Highway Authority
    
  • Central Public Works Department
    
  • Border Roads Organisation
    
  View Solution

  ---

• 5.

  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.
  View Solution

  ---

• 6.

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

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