CBSE Class 12 Marketing Question Paper 2023 with Answer Key (February 25, Set 4 - 336)

CBSE CLASS XII Questions

• 1.

  From the given data of \(E^{\circ}\) values, answer the following questions :
  (I) Why \(E^{\circ}_{M^{2+}/M}\) show irregular trend in the above values ?
  (II) Why is \(E^{\circ}_{Cu^{2+}/Cu}\) value exceptionally positive ?
  (III) Why \(E^{\circ}_{Mn^{2+}/Mn}\) value is highly negative ?
  

  

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• 2.

  A magnet held vertically, with its north pole down, is dropped along the axis of a closed solenoid placed vertically on a table. If the observer looks down from the top,

  • the induced current will flow in the anticlockwise direction.
  • the induced current will flow in the clockwise direction.
  • no induced current will flow in the solenoid.
  • the magnet will fall with a constant velocity.
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• 3.

  Which of the following curve represents the first order reaction?
  

  

  • A
  • B
  • C
  • D
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• 4.

  Write the name of basic building units of proteins and nucleic acids. How can you differentiate between Fibrous and Globular proteins on the basis of their structures ?

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• 5.

  (i) How does a farmer use dormancy of seed to his advantage ?

  (ii) Differentiate between pea seed and castor seed.

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• 6.

  Identify the parts P, Q, R, S in the figure given below and select the option in the correct order.

  

  • P - Seed, Q - Thalamus, R - Mesocarp, S - Endocarp
    
  • P - Thalamus, Q - Seed, R - Endocarp, S - Mesocarp
    
  • P - Seed, Q - Thalamus, R - Endocarp, S - Mesocarp
    
  • P - Thalamus, Q - Seed, R - Mesocarp, S - Endocarp
    
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