1
MHT CET 2021 20th September Evening Shift
MCQ (Single Correct Answer)
+1
-0

Calculate heat of formation of $$\mathrm{HCl}$$ gas from following reaction.

$$\mathrm{H}_{2(\mathrm{~g})}+\mathrm{Cl}_{2(\mathrm{~g})} \rightarrow 2 \mathrm{HCl}_{(\mathrm{g})} ; \Delta \mathrm{H}=-194 \mathrm{~kJ}$$

A
$$-143 \mathrm{~kJ} \mathrm{~mol}^{-1}$$
B
$$-286 \mathrm{~kJ} \mathrm{~mol}^{-1}$$
C
$$-92 \mathrm{~kJ} \mathrm{~mol}^{-1}$$
D
$$-97 \mathrm{~kJ} \mathrm{~mol}^{-1}$$
2
MHT CET 2021 20th September Evening Shift
MCQ (Single Correct Answer)
+1
-0

Calculate difference between $$\Delta \mathrm{H}$$ and $$\Delta \mathrm{U}$$ for following reaction at $$25^{\circ} \mathrm{C}$$ ?

$$\mathrm{C}_2 \mathrm{H}_{6(\mathrm{~g})}+3.5 \mathrm{O}_2 \rightarrow 2 \mathrm{CO}_{2(\mathrm{~g})}+3 \mathrm{H}_2 \mathrm{O}_{(l)}\left(\mathrm{R}=8.314 \mathrm{~J} \mathrm{~K}^{-1} \mathrm{~mol}^{-1}\right)$$

A
$$-9.3 \mathrm{~kJ}$$
B
$$-3.1 \mathrm{~kJ}$$
C
$$-6.2 \mathrm{~kJ}$$
D
$$-16.10 \mathrm{~kJ}$$
3
MHT CET 2021 20th September Evening Shift
MCQ (Single Correct Answer)
+1
-0

The change in internal energy of a system depends upon

A
initial and final states of a system
B
path followed by system
C
total energy of final state only
D
number of steps involved in system
4
MHT CET 2021 20th September Morning Shift
MCQ (Single Correct Answer)
+1
-0

Which of the following reactions shows work of compression?

A
$$N{H_{{3{(g)}}}} + HC{l_{(g)}} \to N{H_4}C{l_{(s)}}$$
B
$${C_2}{H_{6(g)}} \to 2{C_{(s)}} + 3{H_{2(g)}}$$
C
$$2S{O_{3(g)}} \to 2S{O_{2(g)}} + {O_{2(g)}}$$
D
$$2{H_2}{O_{2(l)}} \to 2{H_2}{O_{(l)}} + {O_{2(g)}}$$
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