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1.
In the combustion of 2.0 g of methane, 25 kcal heat is liberated. Heat of combustion of methane would be
2.
1 mole of an ideal gas at 
is subjected to expand reversibly ten times of its initial volume. The change in entropy of expansion is:
is subjected to expand reversibly ten times of its initial volume. The change in entropy of expansion is:
3.
The heat of formation (
) of 
is equal to:
) of is equal to:
4.
The entropy change for the reaction given below,
Is…at 300 K. Standard entropies of
and are 
and 
respectively.
Is…at 300 K. Standard entropies of
and are and respectively.5.
Heat of combustion 
for 
and 
are 
and 
kcal/mole then for 
for and are and kcal/mole then for
6.
A positive change in enthalpy occurs in :
7.
A gas expands isothermally and reversibly. The work done by the gas is:
8.
What is 
for combustion of 1 mole of benzene, when both the reactants and products are gas at 298 K
for combustion of 1 mole of benzene, when both the reactants and products are gas at 298 K
9.
Internal energy and pressure of a gas of unit volume are related as:
10.
A reaction accompanied with the absorption of energy is :