MHT CET 2024 11th May Evening Shift | Liquid Solution Question 9 | Chemistry

In a solution, mole fraction of solute is 0.2 , when lowering in vapour pressure is 10 mm Hg . To get lowering of vapour pressure of 20 mm Hg , mole fraction of solute in solution is

0.2

0.4

0.6

0.8

MHT CET 2024 11th May Evening Shift

MCQ (Single Correct Answer)

-0

Which of the following solutions will not show flow of solvent in either direction when separated by semipermeable membrane?

6 g urea $\mathrm{dm}^{-3}$ and 85.5 g sucrose $\mathrm{dm}^{-3}$

15 g urea dm ${ }^{-3}$ and 34.2 g sucrose $\mathrm{dm}^{-3}$

6 g urea dm ${ }^{-3}$ and 34.2 g sucrose $\mathrm{dm}^{-3}$

15 g urea $\mathrm{dm}^{-3}$ and 171 g sucrose $\mathrm{dm}^{-3}$

MHT CET 2024 11th May Evening Shift

MCQ (Single Correct Answer)

-0

The solution containing $18 \mathrm{~g} \mathrm{dm}^{-3}$ glucose (molar mass 180) in water and another containing $6 \mathrm{~g} \mathrm{dm}^{-3}$ of solute A in water boils at same temperature. What is molar mass of A ?

$54 \mathrm{~g} \mathrm{~mol}^{-1}$

$90 \mathrm{~g} \mathrm{~mol}^{-1}$

$120 \mathrm{~g} \mathrm{~mol}^{-1}$

$60 \mathrm{~g} \mathrm{~mol}^{-1}$

MHT CET 2024 11th May Evening Shift

MCQ (Single Correct Answer)

-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

$\mathrm{P}_{\text {total }}=\mathrm{P}_1 \mathrm{x}_1$

$\mathrm{x}_1=\frac{\mathrm{P}_1}{\mathrm{P}_{\text {total }}}$

$\mathrm{P}_{\text {total }}=1-\mathrm{P}_1 \mathrm{x}_1$

$P_{\text {total }}=P_1\left(1-x_1\right)$

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