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Thermodynamics MCQ Question with Answer

Thermodynamics MCQ with detailed explanation for interview, entrance and competitive exams. Explanation are given for understanding.

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Question No : 15
For the reaction
C+O2CO2        H1=394 KJ mole-12CO+O22CO2H2=569 KJH for 1 mole formation of CO is...?

+265.0 KJ mole-1
-165.0 KJ mole-1
-109.5 KJ mole-1
+109.5 KJ mole-1

Question No : 16
The heat change taking place in the reaction
H2 OIH2Og,HfH2 Og=-57K CalHfH2 OI=68.3K Calis..?

-11.3 Kcal
+11.3 Kcal
-17.3 Kcal
125.5 Kcal

Question No : 17
The enthalpy of the elements in their standard states is taken as zero. So the enthalpy of formation of a compound may be

negative
positive
zero
negative or positive

Question No : 18
Heat of neutralisation of HCI and NaOH is -57.32 KJ per gram equivalent and that of acetic acid and NaOH is -55.23 KJ per gram equivalent. The heat of dissociation of acetic acid per gram equivalent should be?

-2.09
2.09
-2.1%
2.196

Question No : 19
Heat of reaction

depends on the rate of reaction
depends on pressure
is independent of temperature
may or may not depend on temperature

Question No : 20
A person requires 2870 Kcal of energy for leading a normal life. If heat of combustion of cane sugar is -1349 Kcal then he must consume...................kg of cane sugar daily.

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Question No : 21
A person requires 2870 Kcal of energy for leading a normal life. If heat of combustion of cane sugar is -1349 Kcal then he must consume...................kg of cane sugar daily.

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