Question 1: Palette 1/6

BITSAT 2025 MCQ

A 1 molar aqueous solution of magnesium nitrate is $40 \%$ dissociated at 298 K . Calculate the osmotic pressure of the solution. $\left(R=0.0821 \mathrm{~L} \mathrm{~atm} \mathrm{~mol}^{-1} \mathrm{~K}^{-1}\right)$

A

20.5 atm

B

44.04 atm

C

4.11 atm

D

2.87 atm

Question 2: Palette 2/6

BITSAT 2025 MCQ

0.1 m of urea and 0.05 m of $\mathrm{CaCl}_2$ are dissolved separately in equal volumes of water. Which solution will have higher elevation in boiling point?

A

Urea solution

B

$\mathrm{CaCl}_2$ solution

C

Both will show equal elevation

D

None will show elevation

Question 3: Palette 3/6

BITSAT 2024 MCQ

A dimolar solution potassium ferrocyanide is $ 50 \% $ dissociated at 300 K . The osmotic pressure of solution is $ \left(R=8.314 \mathrm{JK}^{-1} \mathrm{~mol}^{-1}\right) $

A

7.48 atm

B

4.99 atm

C

3.74 atm

D

6.23 atm

Question 4: Palette 4/6

BITSAT 2024 MCQ

58.5 g of NaCl and 180 g of glucose were separately dissolved in 1000 mL of water. Identify the correct statement regarding the elevation of boiling point of the resulting solution.

A

NaCl solution will show higher elevation of boiling point.

B

Glucose solution will show higher elevation of boiling point.

C

Both the solution will show equal elevation of boiling point.

D

None will show boiling point elevation.

Question 5: Palette 5/6

BITSAT 2021 MCQ

The relative lowering of vapour pressure of a dilute aqueous solution containing non-volatile solute is 0.0125. The molality of the solution is about

A

0.70

B

0.50

C

0.90

D

0.80

Question 6: Palette 6/6

BITSAT 2020 MCQ

The molar heat of vaporisation of water at 100$^\circ$C is 40.585 kJ/mol. The temperature at which a solution containing 5.60 g of Al₂(SO₄)₃ per 1000 g of water boil is __________. (Assuming the degree of ionisation of salt to be 1).

A

1000.042$^\circ$C

B

10.0042$^\circ$C

C

100.042$^\circ$C

D

105$^\circ$C