1
MHT CET 2024 11th May Evening Shift
MCQ (Single Correct Answer)
+1
-0

If $P_1$ partial pressure of a gas and $x_1$ is its mole fraction in a mixture, then correct relation between $P_1$ and $x_1$ is

A
$\mathrm{P}_{\text {total }}=\mathrm{P}_1 \mathrm{x}_1$
B
$\mathrm{x}_1=\frac{\mathrm{P}_1}{\mathrm{P}_{\text {total }}}$
C
$\mathrm{P}_{\text {total }}=1-\mathrm{P}_1 \mathrm{x}_1$
D
$P_{\text {total }}=P_1\left(1-x_1\right)$
2
MHT CET 2024 11th May Morning Shift
MCQ (Single Correct Answer)
+1
-0

Calculate van't Hoff factor (i) of 0.2 m aqueous solution of an electrolyte if it freezes at $-0.660 \mathrm{~K} .\left(\mathrm{K}_{\mathrm{f}}=1.84 \mathrm{~K} \mathrm{~kg} \mathrm{~mol}^{-1}\right)$

A
1.97
B
1.79
C
0.242
D
0.557
3
MHT CET 2024 11th May Morning Shift
MCQ (Single Correct Answer)
+1
-0

Vapour pressure of a pure solvent is 550 mm of Hg . By addition of a non volatile solute it decreases to 510 mm of Hg . Calculate the mole fraction of solute in solution.

A
0.215
B
0.072
C
0.610
D
0.512
4
MHT CET 2024 11th May Morning Shift
MCQ (Single Correct Answer)
+1
-0

Identify the false statement among the following.

A
Ideal solution obey Raoult's law over entire range of temperature and concentration.
B
For ideal solution $\Delta_{\text {mix }} \mathrm{V}=0$.
C
Non ideal solution do not obey Raoult's law over the entire range of concentration.
D
Vapour pressure of non ideal solution always lies between vapour pressure of pure components.
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