CBSE Class 12 Biology Question Paper 2022 with Answer Key (May 30, Set 1 - 57/2/1- Morning Session)

CBSE CLASS XII Questions

• 1.

  Calculate emf of the following cell at 298 K: \[ \text{Cr(s)} \, | \, \text{Cr}^{3+} (aq) \, (0.1\, M) \; || \; \text{Fe}^{2+} (aq) \, (0.01\, M) \, | \, \text{Fe(s)} \] Given: \[ E^\circ_{\text{Cr}^{3+}/\text{Cr}} = -0.74 \, V, \quad E^\circ_{\text{Fe}^{2+}/\text{Fe}} = -0.44 \, V, \quad \log 10 = 1 \]

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• 2.

  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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• 3.

  There are two statements Assertion (A) and Reason (R):
  Assertion (A): At the time of admission of a new partner in a partnership firm, the newly admitted partner brings an agreed amount of capital either in cash or in kind.
  Reason (R): On admission, the new partner gets the right to acquire share in the assets and profits of the partnership firm.
  Choose the correct option from the following:

  • Both Assertion (A) and Reason (R) are correct and Reason (R) is the correct explanation of Assertion (A).
    
  • Both Assertion (A) and Reason (R) are correct, but Reason (R) is not the correct explanation of Assertion (A).
    
  • Assertion (A) is correct, but Reason (R) is incorrect.
    
  • Assertion (A) is incorrect, but Reason (R) is correct.
    
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• 4.

  Which of the following is not the stage of active listening?
  

  • Receiving
    
  • Understanding
    
  • Remembering
    
  • Non responding
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• 5.

  In an economy, the currency held by the public, Net Demand Deposits with Commercial Banks and Net Time Deposits with Commercial Banks stand at ₹ 1,42,000 crore, ₹ 22,000 crore and ₹ 86,000 crore respectively. The value of Money Supply (M1) would be ₹ _______ crore.

  • 2,50,000
    
  • 86,000
    
  • 1,64,000
    
  • 1,42,000
    
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• 6.

  Arrange the following in the correct sequence of their evolution and select the correct option:
  (i) Seaweed
  (ii) Invertebrates
  (iii) Jawless fish
  

  • (i), (ii), (iii)
  • (i), (iii), (ii)
  • (ii), (iii), (i)
  • (ii), (i), (iii)
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