1
MHT CET 2023 11th May Evening Shift
MCQ (Single Correct Answer)
+1
-0

Calculate $$\Delta \mathrm{S}_{\text {total }}$$ for the following reaction at $$300 \mathrm{~K}$$.

$$\mathrm{NH}_4 \mathrm{NO}_{3(\mathrm{~s})} \longrightarrow \mathrm{NH}_{(\mathrm{aq})}^{+}+\mathrm{NO}_{3(\mathrm{aq})}^{-}$$

$$\left(\Delta \mathrm{H}=28.1 \mathrm{~kJ} \mathrm{~mol}^{-1}, \Delta \mathrm{S}_{\mathrm{sys}}=108.7 \mathrm{~J} \mathrm{~K}^{-1} \mathrm{~mol}^{-1}\right)$$

A
$$15.1 \mathrm{~J} \mathrm{~K}^{-1} \mathrm{~mol}^{-1}$$
B
$$93.6 \mathrm{~J} \mathrm{~K}^{-1} \mathrm{~mol}^{-1}$$
C
$$84.3 \mathrm{~J} \mathrm{~K}^{-1} \mathrm{~mol}^{-1}$$
D
$$202.3 \mathrm{~J} \mathrm{~K}^{-1} \mathrm{~mol}^{-1}$$
2
MHT CET 2023 11th May Evening Shift
MCQ (Single Correct Answer)
+1
-0

Which from following properties is NOT exhibited by LDP?

A
It is crystalline.
B
It is moisture resistant.
C
LDP films are extremely flexible.
D
It is poor conductor of electricity.
3
MHT CET 2023 11th May Evening Shift
MCQ (Single Correct Answer)
+1
-0

Identify the FALSE statement about ideal solution from following.

A
Ideal solutions obey Raoult's law over entire range of concentration.
B
No heat is evolved or absorbed when two components forming an ideal solution are mixed.
C
Volume of ideal solution is same as sum of volumes of two components taken for mixing.
D
The vapour pressure of ideal solution is either higher or lower than vapour pressure of pure components.
4
MHT CET 2023 11th May Evening Shift
MCQ (Single Correct Answer)
+1
-0

Which from following is NOT an example of amorphous solid?

A
Glass
B
Plastic
C
Rubber
D
Diamond
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