AP PGECET 2019 Question Paper: Download Question Paper and Answer Key PDFs

AP PGECET 2019 Questions

• 1.

  1 mole of Argon gas is heated at constant pressure from 200 K to 600 K.
  If \( C_p = 4\ \text{cal} \cdot \text{deg}^{-1} \cdot \text{mol}^{-1} \), then the change in entropy will be:
  (Given \( \ln 3 = 1.09 \))
  

  • 4.36 Cal.deg$^{-1}$mol$^{-1}$
    
  • 2.76 Cal.deg$^{-1}$mol$^{-1}$
    
  • 3.34 Cal.deg$^{-1}$mol$^{-1}$
    
  • 5.39 Cal.deg$^{-1}$mol$^{-1}$
    
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• 2.

  Why is the equilibrium constant (K) temperature-dependent?
  

  • Because $\Delta G^\circ$ depends on T
    
  • Because pressure affects K
    
  • Because entropy is temperature-independent
    
  • Because fugacity coefficients change with T
    
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• 3.

  If the vapour pressure at two temperatures of a solid phase in equilibrium with its liquid phase is known, then the latent heat of fusion can be calculated by the:
  

  • Nernst Heat Theorem
    
  • Maxwell's equation
    
  • Van Laar equation
    
  • Clapeyron–Clausius equation
    
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• 4.

  The absolute humidity of air at 101.325 kPa is measured to be 0.02 kg of water per kg of dry air. Then the partial pressure of water vapour in the air is:
  

  • 1.99 kPa
    
  • 2.55 kPa
    
  • 3.16 kPa
    
  • 3.87 kPa
    
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• 5.

  The minimum amount of work required to operate a refrigerator which removes 1000 Cal heat at $0^\circ$C and rejects at $50^\circ$C will be:
  

  • 170 Cal
    
  • 120 Cal
    
  • 150 Cal
    
  • 183.15 Cal
    
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