3
MCQ (Single Correct Answer)
The state of a gas can be described by quoting the relationship between
A
pressure, volume, temperature
B
temperature, amount, pressure
C
amount, volume, temperature
D
pressure, volume, temperature, amount
4
MCQ (Single Correct Answer)
The volume of gas is reduced to half from its original volume. The specific heat will be
A
reduce to half
B
be doubled
C
remain constant
D
increase four times
5
MCQ (Single Correct Answer)
During complete combustion of one mole of butane, 2658 kJ of heat is released. The thermochemical reaction for above change is
A
$2 \mathrm{C}_4 \mathrm{H}_{10}(\mathrm{~g})+13 \mathrm{O}_2(\mathrm{~g}) \rightarrow 8 \mathrm{CO}_2(\mathrm{~g})+10 \mathrm{H}_2 \mathrm{O}(\mathrm{l}) ; \Delta_{\mathrm{c}} \mathrm{H}=-2658.0 \mathrm{~kJ} \mathrm{~mol}^{-1}$
B
$\mathrm{C}_4 \mathrm{H}_{10}(\mathrm{~g})+\frac{13}{2} \mathrm{O}_2(\mathrm{~g}) \rightarrow 4 \mathrm{CO}_2(\mathrm{~g})+5 \mathrm{H}_2 \mathrm{O}(\mathrm{l}) ; \Delta_{\mathrm{C}} \mathrm{H}=-1329.0 \mathrm{~kJ} \mathrm{~mol}^{-1}$
C
$\mathrm{C}_4 \mathrm{H}_{10}(\mathrm{~g})+\frac{13}{2} \mathrm{O}_2(\mathrm{~g}) \rightarrow 4 \mathrm{CO}_2(\mathrm{~g})+5 \mathrm{H}_2 \mathrm{O}(\mathrm{l}) ; \Delta_{\mathrm{C}} \mathrm{H}=-2658.0 \mathrm{~kJ} \mathrm{~mol}{ }^{-1}$
D
$\mathrm{C}_4 \mathrm{H}_{10}(\mathrm{~g})+\frac{13}{2} \mathrm{O}_2(\mathrm{~g}) \rightarrow 4 \mathrm{CO}_2(\mathrm{~g})+5 \mathrm{H}_2 \mathrm{O}(l) ; \Delta_{\mathrm{c}} H=+2658.0 \mathrm{~kJ} \mathrm{~mol}^{-1}$
6
MCQ (Single Correct Answer)
$\Delta_f U^{\mathrm{s}}$ of formation of $\mathrm{CH}_4(\mathrm{~g})$ at certain temperature is $-393 \mathrm{~kJ} \mathrm{~mol}^{-1}$. The value of $\Delta_f H^{\mathrm{s}}$ is
A
zero
B
$>\Delta_f U^{\mathrm{s}}$
C
$<\Delta_f U^{\mathrm{s}}$
D
equal to $\Delta_f U^{\mathrm{s}}$
7
MCQ (Single Correct Answer)
In an adiabatic process, no transfer of heat takes place between system and surroundings. Choose the correct option for free expansion of an ideal gas under adiabatic condition from the following.
A
$q=0, \Delta T \neq 0, W=0$
B
$q \neq 0, \Delta T=0, W=0$
C
$q=0, \Delta T=0, W=0$
D
$q=0, \Delta T<0, W \neq 0$