CBSE Class 12 Question Paper 2012 (Available): Check Previous Year Question Paper with Solution PDF (2026-2012)

CBSE CLASS XII 2012 Questions

• 1.

  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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• 2.

  Hari, Murari and Abhi were partners in a firm sharing profits and losses in the ratio of 8 : 7 : 4. Murari retired from the firm on 31st March, 2025. Hari and Abhi decided to share profits in the future in the ratio of 2 : 1. The gaining ratio of Hari and Abhi was:

  • 1 : 2
    
  • 8 : 7
    
  • 2 : 1
    
  • 7 : 4
    
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• 3.

  Consider a cylindrical conductor of length \( l \) and area of cross-section \( A \). Current \( I \) is maintained in the conductor and electrons drift with velocity \( \vec{v}_d \, (|\vec{v}_d| = \frac{eE}{m} \tau) \), where symbols have their usual meanings. Show that the conductivity of the material of the conductor is given by \[ \sigma = \frac{n e^2 \tau}{m}. \]

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• 4.

  Devanagari script has been used by the artist in the painting:

  • Shiva and Sati
    
  • Falcon on Bird Rest
    
  • Ganesha
    
  • Kabir and Raidas
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• 5.

  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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