OJEE 2017 Question Paper: Download Paper and Answer Key PDFs

OJEE 2017 Questions

• 1.

  The temperatures of two bodies differ by 1°C. How much will they differ on Fahrenheit scale?

  • 1°F
    
  • 1.2°F
    
  • 2.4°F
    
  • 1.8°F
    
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• 2.

  Same quantity of ice is filled in each of the two identical metal containers P and Q having the same size and shape but of different materials. In P ice melts completely in time \( t_1 \), whereas in Q the time taken is \( t_2 \). Then the ratio of conductivities of P and Q is:

  • \( \frac{t_2}{t_1} \)
    
  • \( \sqrt{\frac{t_1}{t_2}} \)
    
  • \( \frac{t_2}{t_1^2} \)
    
  • \( \frac{t_2}{t_2^2} \)
    
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• 3.

  If the speed of sound in air at 0°C is 331 m/s, the speed of sound in air at 35°C is:

  • 331.0 m/s
    
  • 340.2 m/s
    
  • 351.6 m/s
    
  • 362.5 m/s
    
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• 4.

  Fog is a solution of:

  • Liquid in gas
    
  • Gas in liquid
    
  • Solid in gas
    
  • Gas in gas
    
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• 5.

  Calculate the number density of free carriers in silver, assuming that each atom contributes one carrier. The density of silver is \( 10.5 \times 10^3 \, \text{kg/m}^3 \) and the atomic weight is 107.8.

  • \( 0.585 \times 10^{28} \, \text{carriers/m}^3 \)
    
  • \( 58.5 \times 10^{26} \, \text{carriers/m}^3 \)
    
  • \( 585.0 \times 10^{27} \, \text{carriers/m}^3 \)
    
  • \( 5.85 \times 10^{28} \, \text{carriers/m}^3 \)
    
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