1
MHT CET 2021 24th September Evening Shift
MCQ (Single Correct Answer)
+1
-0

The solution containing $$3 \mathrm{~g}$$ urea (molar mass 60 ) per $$\mathrm{dm}^3$$ of water and another solution containing $$4.5 \mathrm{~g}$$ of solute $$\mathrm{A}$$ per $$\mathrm{dm}^3$$ boils at same temperature, then what is molar mass of $$\mathrm{A}$$ ?

A
$$54 \mathrm{~g} \mathrm{~mol}^{-1}$$
B
$$180 \mathrm{~g} \mathrm{~mol}^{-1}$$
C
$$120 \mathrm{~g} \mathrm{~mol}^{-1}$$
D
$$90 \mathrm{~g} \mathrm{~mol}^{-1}$$
2
MHT CET 2021 24th September Evening Shift
MCQ (Single Correct Answer)
+1
-0

Vapour pressure of solution and of pure solvent are $$\mathrm{P}_1$$ and $$\mathrm{P}_1{ }^0$$ respectively. If $$\frac{P_1}{P_1^0}$$ is 0.15, find the mole fraction of solute.

A
0.66
B
0.85
C
0.15
D
0.33
3
MHT CET 2021 24th September Evening Shift
MCQ (Single Correct Answer)
+1
-0

According to Raoult's law mole fraction of solute in solution in given by formula

A
$$\frac{\Delta \mathrm{P}}{\mathrm{P}_1^0}$$
B
$$\mathrm{\frac{P_1^0}{P_1}}$$
C
$$\mathrm{\frac{P_1^0}{\Delta P}}$$
D
$$\mathrm{\frac{P_1}{P_1^0}}$$
4
MHT CET 2021 24th September Morning Shift
MCQ (Single Correct Answer)
+1
-0

What is vapour pressure of solution containing 0.1 mole solute dissolved in $$1.8 \times 10^{-2} \mathrm{~kg} \mathrm{~H}_2 0$$ ? $$(\mathrm{P}_1^0=24 \mathrm{~mm} \mathrm{~Hg})$$

A
12.40 mm Hg
B
18.12 mm Hg
C
15.72 mm Hg
D
21.84 mm Hg
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