Solved papers for JEE Main & Advanced AIEEE Solved Paper-2003

done AIEEE Solved Paper-2003 Total Questions - 4

• question_answer1) If at 298K the bond energies of \[C-H,C-C,\,C=C\] and \[H-H\] bonds are respectively 414, 347, 615 and 435 kJ \[mo{{l}^{-1}}\], the value of enthalpy change for the reaction \[{{H}_{2}}C=C{{H}_{2}}(g)+{{H}_{2}}(g)\xrightarrow{\,}\,{{H}_{3}}C-C{{H}_{3}}(g)\] at 298K will be     AIEEE  Solved  Paper-2003
  A)
                                          \[+250\] kJ        
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  B)
        \[-250\] kJ                          
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  C)
        \[+125\] kJ        
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  D)
        \[-125\] kJ
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• question_answer2) The enthalpy change for reaction does not depend upon the     AIEEE  Solved  Paper-2003
  A)
  physical state of reactants and products
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  B)
  use of different reactants for the same product
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  C)
  nature of intermediate reaction steps
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  D)
  difference in initial or final temperatures of involved substances
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• question_answer3) A pressure cooker reduces cooking time for food because     AIEEE  Solved  Paper-2003
  A)
  heat is more evenly distributed in the cooking space
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  B)
  boiling point of water involved in cooking is increased
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  C)
  the higher pressure inside the cooker crushes the food material
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  D)
  cooking involves chemical changes helped by a rise in temperature
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• question_answer4) The internal energy change when a system goes from state A to B is 40 kJ/mol. If the system goes from A to B by a reversible path and returns to state A by an irreversible path, what would be the net change in internal energy?     AIEEE  Solved  Paper-2003
  A)
  40 kJ                                     
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  B)
  > 40 kJ                  
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  C)
  < 40 kJ                                  
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  D)
  zero
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