CBSE Class 12 Punjabi Question Paper 2012 (Set 4)

CBSE CLASS XII Questions

• 1.

  Read the following statements carefully:
  Statement 1: Final goods are those goods which normally lose their identity in the production process.
  Statement 2: Final goods may get transformed during the consumption process by a consumer.

  • Statement 1 is true and statement 2 is false.
    
  • Statement 1 is false and statement 2 is true.
    
  • Both statements 1 and 2 are true.
    
  • Both statements 1 and 2 are false.
    
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• 2.

  The resistance of a metal wire at \( 20^\circ \text{C} \) is \( 1.05 \, \Omega \) and at \( 100^\circ \text{C} \) is \( 1.38 \, \Omega \). Determine the temperature coefficient of resistivity of this metal.

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• 3.

  Consider the nuclear reaction \( X \to Y + Z \). Let \( M_x \), \( M_y \), and \( M_z \) be the masses of the three nuclei X, Y, and Z respectively. Then which of the following relations hold true?

  • \( (M_x - M_z)<M_y \)
    
  • \( (M_x - M_y)<M_z \)
    
  • \( M_x>(M_y + M_z) \)
    
  • \( M_x<(M_y + M_z) \)
    
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• 4.

  Read the following statements carefully:
  Statement 1: Depreciation of currency is an economic action undertaken by the government of a nation under the fixed exchange rate system.
  Statement 2: Under the floating exchange rate system, authorities actively intervene in the foreign exchange market by way of maintaining foreign exchange reserves.
  

  • Statement 1 is true and statement 2 is false.
    
  • Statement 1 is false and statement 2 is true.
    
  • Both statements 1 and 2 are true.
    
  • Both statements 1 and 2 are false.
    
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• 5.

  In a school, the probability of holding a debate competition is \( \frac{1}{3} \) and that of a quiz competition is \( \frac{2}{3} \). In the two participating teams, A has 4 girls and 6 boys and B has 7 girls and 3 boys. If a debate competition is held, the students are selected from team A and for the quiz competition they are selected from team B. If only two students are to be chosen from the teams, then find the probability that one will be a girl and the other a boy.

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• 6.

  Rohan failed an important exam. Instead of accepting that he didn't prepare well, he insists that the teacher was biased and the exam was unfair. Which defence mechanism is Rohan using?
  

  • Repression
    
  • Projection
    
  • Rationalization
    
  • Denial
    
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