OJEE 2017 Question Paper: Download Paper and Answer Key PDFs

OJEE 2017 Questions

• 1.

  Fog is a solution of:

  • Liquid in gas
    
  • Gas in liquid
    
  • Solid in gas
    
  • Gas in gas
    
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• 2.

  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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• 3.

  A battery of 10 V and internal resistance 0.5 Ω is connected in parallel with a battery of 12 V and internal resistance 0.8 Ω. The terminals are connected by an external resistance of 20 Ω. The current flowing through the 20 Ω resistance is:

  • 0.75 A
    
  • 1.74 A
    
  • 0.53 A
    
  • 1.21 A
    
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• 4.

  A coil has resistance 20 Ω and inductance 0.35 H. Compute its impedance to an alternating current of 25 cycles/s.

  • 50.5 Ω
    
  • 48.5 Ω
    
  • 58.5 Ω
    
  • 68.5 Ω
    
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• 5.

  According to Henry’s Law, in gases, an increase in pressure increases:

  • Solubility
    
  • Saturation
    
  • Volume
    
  • Viscosity
    
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