1
MHT CET 2024 3rd May Evening Shift
MCQ (Single Correct Answer)
+1
-0

Which of the following equation correctly represents molar mass of a solute by knowing boiling point elevation?

A
$\mathrm{M}_2=\frac{1000 \times \Delta \mathrm{T}_{\mathrm{b}} \times \mathrm{W}_2}{\mathrm{~K}_{\mathrm{b}} \times \mathrm{W}_1}$
B
$\mathrm{M}_2=\frac{1000 \times \mathrm{K}_{\mathrm{b}} \times \mathrm{W}_1}{\Delta \mathrm{~T}_{\mathrm{b}} \times \mathrm{W}_2}$
C
$\mathrm{M}_2=\frac{1000 \times \Delta \mathrm{T}_{\mathrm{b}} \times \mathrm{W}_1}{\mathrm{~K}_{\mathrm{b}} \times \mathrm{W}_2}$
D
$\mathrm{M}_2=\frac{1000 \times \mathrm{K}_{\mathrm{b}} \times \mathrm{W}_2}{\Delta \mathrm{~T}_{\mathrm{b}} \times \mathrm{W}_1}$
2
MHT CET 2024 3rd May Morning Shift
MCQ (Single Correct Answer)
+1
-0

A solution of non volatile solute has boiling point elevation 1.75 K . Calculate molality of solution $\left[\mathrm{K}_{\mathrm{b}}=3.5 \mathrm{~K} \mathrm{~kg} \mathrm{~mol}^{-1}\right]$

A
$0.77 \mathrm{~mol} \mathrm{~kg}^{-1}$
B
$0.69 \mathrm{~mol} \mathrm{~kg}^{-1}$
C
$0.50 \mathrm{~mol} \mathrm{~kg}^{-1}$
D
$0.35 \mathrm{~mol} \mathrm{~kg}^{-1}$
3
MHT CET 2024 3rd May Morning Shift
MCQ (Single Correct Answer)
+1
-0

Which from the following statements is correct for aqueous solution of $6 \mathrm{~g} \mathrm{~L}^{-1}$ urea and $17 \cdot 12 \mathrm{~g} \mathrm{~L}^{-1}$ of sucrose?

[Molar mass of urea $=60 \mathrm{~g} \mathrm{~mol}^{-1}$

Molar mass of sucrose $=342 \mathrm{~g} \mathrm{~mol}^{-1}$]

A
Osmotic pressure exhibited by urea solution is lower than that of sucrose solution.
B
Urea solution is hypertonic to sucrose solution.
C
These solutions are isotonic.
D
On doubling the concentration of sucrose solution it becomes hypertonic to urea solution.
4
MHT CET 2024 3rd May Morning Shift
MCQ (Single Correct Answer)
+1
-0

Calculate the molar mass of nonvolatile solute when 1.5 g of it is dissolved in 90 g solvent decreases its freezing point by 0.25 K. $$\left[\mathrm{K}_{\mathrm{f}}=1.2 \mathrm{~K} \mathrm{~kg} \mathrm{~mol}^{-1}\right]$$

A
$72 \mathrm{~g} \mathrm{~mol}^{-1}$
B
$80 \mathrm{~g} \mathrm{~mol}^{-1}$
C
$88 \mathrm{~g} \mathrm{~mol}^{-1}$
D
$96 \mathrm{~g} \mathrm{~mol}^{-1}$
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