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Statement I : Combustion of all organic ...

Statement I : Combustion of all organic compounds is exothermic in nature.
Statement II : The enthalpies of all elements in their standard states are zero.

A

Both the statement are individually true but statement II is not the correct explanations of I.

B

Both the statement are individually true and statement II is the correct explanations of I.

C

Statement I is true but II is false.

D

Statement I is false but II is true.

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The correct Answer is:
A
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SURA PUBLICATION-THERMODYNAMICS -ADDITIONAL QUESTIONS
  1. In an exothermic reaction, heat is evolved and system loses heat to th...

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  2. In an endothermic reaction , the value of DeltaH is always

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  3. Statement I : Combustion of all organic compounds is exothermic in nat...

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  4. For a given reaction DeltaG obtained was having positive sign conventi...

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  5. Pick out the suitable condition in which a spontaneous endothermic rea...

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  6. Statement I : Flow of heat from colder of hotter object is spontaneous...

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  7. Which is true about cyclic process ?

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  8. The standard free energy change DeltaG^(@) is related to k (equilibriu...

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  9. The enthalpy and entropy change for a chemical reaction are -5.3 xx10^...

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  10. This quantity is the energy associated with a chemical that can be use...

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  11. Identify the incorrect statement among the following .

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  12. Hot water contained in a closed beaker is an example for a …………. Syste...

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  13. Which of the following does not result in an increase in the entropy ?

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  14. The condition for standard free energy is ………..

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  15. Solve : DeltaH=10k " cal mol"^(-1),DeltaS=20 " cal deg"^(-1)mol^(-1) a...

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  16. Consider the following statement(s) and identify the true statements (...

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  17. Assertion : 3H(2((g))) +N(2((g)))rarr2NH(3((g))) is exothermic. Reas...

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  18. Assertion : Enthalpy of neutralisation of 1 equivalent each of HCl and...

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  19. Which laws can be used to predict whether a particle reaction is feasi...

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  20. Which of the following is incorrect ?

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