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

### done AIEEE Solved Paper-2003

• 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

B)       $-250$ kJ

C)       $+125$ kJ

D)       $-125$ kJ

• question_answer2) The enthalpy change for reaction does not depend upon the     AIEEE  Solved  Paper-2003

A) physical state of reactants and products

B) use of different reactants for the same product

C) nature of intermediate reaction steps

D) difference in initial or final temperatures of involved substances

• 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

B) boiling point of water involved in cooking is increased

C) the higher pressure inside the cooker crushes the food material

D) cooking involves chemical changes helped by a rise in temperature

• 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

B) > 40 kJ

C) < 40 kJ

D) zero

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