AP PGECET 2021 Computer Science and Information Technology Question Paper with Answer Key PDF (October 8, 2021 - Afternoon Session)

AP PGECET Questions

• 1.

  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
    
  View Solution

  ---

• 2.

  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
    
  View Solution

  ---

• 3.

  A balanced delta connected load of \( (8 + j6) \Omega \) per phase is connected to a 400 V, 50 Hz, three-phase supply lines. If the input power factor is to be improved to 0.9 by connecting a bank of star-connected capacitors, the required kVAR of the bank is _______.

  • 42.7
    
  • 10.2
    
  • 28.8
    
  • 38.4
  View Solution

  ---

• 4.

  The entropy of single crystalline Silicon at absolute zero will be:
  

  • 2
    
  • 1
    
  • 0
    
  • 10
    
  View Solution

  ---

• 5.

  The theoretical minimum work required to separate one mole of a liquid mixture at 1 atm, containing 50 mole % each of n-heptane and n-octane into pure compounds, each at 1 atm, is:
  

  • $-2RT \ln 0.5$
    
  • $2RT$
    
  • $-RT \ln 0.5$
    
  • $0.5RT$
    
  View Solution

  ---

• 6.

  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
    
  View Solution