1
MHT CET 2021 23th September Morning Shift
+1
-0

What is the freezing point of 1 molal aqueous solution of a non volatile solute?

($$\mathrm{K}_{\mathrm{f}}=1.86 \mathrm{~K} \mathrm{~kg} \mathrm{~mol}^{-1})$$ ($$\mathrm{T}_{\mathrm{f}}^0$$ for water $$=0^{\circ} \mathrm{C})$$

A
$$-0.93^{\circ} \mathrm{C}$$
B
$$-2.43^{\circ} \mathrm{C}$$
C
$$-3.72{ }^{\circ} \mathrm{C}$$
D
$$-1.86^{\circ} \mathrm{C}$$
2
MHT CET 2021 23th September Morning Shift
+1
-0

Air is an example of a solution of

A
gas in solid
B
liquid in gas
C
gas in liquid
D
gas in gas
3
MHT CET 2021 22th September Evening Shift
+1
-0

5 g sucrose (molar mass = 342) is dissolved in 100 g of solvent, decreases the freezing point by 2.15 K. What is cryoscopic constant of solvent?

A
14.7 K kg mol$$^{-1}$$
B
2.15 K kg mol$$^{-1}$$
C
4.30 K kg mol$$^{-1}$$
D
7.35 K kg mol$$^{-1}$$
4
MHT CET 2021 22th September Evening Shift
+1
-0

What is Henry's law constant if solubility of a gas in water at $$298 \mathrm{~K}$$ and 1 bar pressure is $$7\times10^{-4} \mathrm{~mol} \mathrm{~L}^{-1}$$ ?

A
$$2.0 \times 10^{-5} \mathrm{~mol} \mathrm{~L}^{-1}$$ bar$$^{-1}$$
B
$$7.0 \times 10^{-4} \mathrm{~mol} \mathrm{~L}^{-1} \mathrm{bar}^{-1}$$
C
$$3.5 \times 10^{-3} \mathrm{~mol} \mathrm{~L}^{-1}$$ bar$$^{-1}$$
D
$$3.1 \times 10^{-5} \mathrm{~mol} \mathrm{~L}^{-1}$$ bar$$^{-1}$$
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Medical
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