AP PGECET 2023 Geo Engineering and Geo Informatics Question Paper with Answer Key PDF

AP PGECET Questions

• 1.

  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:
  

  • $-2RT \ln 0.5$
    
  • $2RT$
    
  • $-RT \ln 0.5$
    
  • $0.5RT$
    
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• 2.

  The ratio of the ages of A and B is 5:3. After 6 years, their ages will be in the ratio 6:4. What is the current age of A?
  

  • 15 years
    
  • 18 years
    
  • 30 years 
     

  • 25 years
    
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• 3.

  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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• 4.

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

  • 2
    
  • 1
    
  • 0
    
  • 10
    
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• 5.

  The change in enthalpy of a system is related to the heat absorbed at a:
  

  • Constant volume
    
  • Constant temperature
    
  • Constant mole fraction
    
  • Constant pressure
    
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• 6.

  Digital signatures provide ________.
   

  • confidentiality
    
  • non-repudiation
    
  • key exchange
    
  • firewall bypass
    
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