1
COMEDK 2023 Evening Shift
MCQ (Single Correct Answer)
+1
-0

Choose the incorrect statement:

A
Higher the $$\mathrm{K}_{\mathrm{H}}$$ value for a gas at a given pressure, higher is its solubility in that solvent.
B
$$\mathrm{K}_{\mathrm{H}}$$ value for a gas present in a given solvent depends on the nature of solute and solvent.
C
$$\mathrm{K}_{\mathrm{H}}$$ value is temperature dependent.
D
$$\mathrm{K}_{\mathrm{H}}$$ value changes with change in the partial pressure of the gas.
2
COMEDK 2023 Evening Shift
MCQ (Single Correct Answer)
+1
-0

$$\mathrm{X}$$ is an electrolyte with a concentration of $$0.04 \mathrm{M}$$ whose formula is of the type $$\mathrm{X}_2 \mathrm{~A}$$. $$\mathrm{Y}$$ is a non-electrolyte solution with a concentration of $$0.2 \mathrm{M}$$ and has an osmotic pressure equal to $$\mathrm{P}_2$$ at room temperature. What is the relationship between the Osmotic pressure $$\pi$$ of $$\mathrm{X}$$ and $$\mathrm{P}_2$$ ?

A
$$\pi=0.6 P_2$$
B
$$\pi=0.12 \mathrm{P}_2$$
C
$$\pi=0.04 \mathrm{P}_2$$
D
$$\pi=0.8 P_2$$
3
COMEDK 2023 Evening Shift
MCQ (Single Correct Answer)
+1
-0

If the depression in freezing point of an aqueous solution containing a solute, which is neither dissociated nor associated, is $$\mathbf{a} \mathrm{K}$$ with $$\mathrm{K}_{\mathrm{f}}=\mathbf{b ~ K ~ k g ~ m o l}{ }^{-1}$$, what would be the elevation in boiling point $$(\mathrm{X})$$ for this solution if its $$\mathrm{K}_{\mathrm{b}}=\mathbf{\mathrm { ~K } \mathrm { ~K } \mathrm { ~kg } \mathrm { ~mol }}{ }^{-1}$$ ?

A
$$ \mathrm{X}=2 \mathrm{c} \times \frac{b}{a} $$
B
$$ X=c \times \frac{a}{2 b} $$
C
$$ X=c \times \frac{a}{b} $$
D
$$ \mathrm{X}=\mathrm{c} \times \frac{b}{a} $$
4
COMEDK 2022
MCQ (Single Correct Answer)
+1
-0

The system that forms maximum boiling azeotropes is

A
acetone-chloroform
B
ethyl alcohol-water
C
benzene-toluene
D
CS$$_2$$ + acetone
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