MCQs of Solutions

Solutions MCQs

Showing 141 to 150 out of 157 Questions

141.

On which factor, the solubility of a gas in a liquid solvent does not depend ?

(a)	Pressure of the gas
(b)	Temperature of solution
(c)	Nature of solvent
(d)	Volume of solution

142.

If n is the number of ions given by 1 mole of the electrolyte, the degree of dissociation 'α' of the electrolyte is _____ .

(a)	$\frac{i - 1}{n + 1}$
(b)	$\frac{i - 1}{n - 1}$
(c)	$\frac{n - 1}{i - 1}$
(d)	$\frac{n + 1}{i - 1}$

143.

Van't Hoff factors of aqueous solutions of X, Y, Z are 1.8, 0.8 and 2.5 respectively. Hence , their _____ .

(a)	Boiling point : Z < X < Y
(b)	Freezing point : Z < X < Y
(c)	Vapour pressure : Y < X < Z
(d)	Osmotic pressure : X = Y = Z

144.

Which of the following conditions is not obeyed by an ideal solution ?

(a)	ΔH_mixing=0
(b)	ΔV_mixing=0
(c)	Raoult's law
(d)	ΔS_mixing=0

145.

Freezing point of urea solution is -0.6°C. How much urea is required is to be dissolved in 3 kg water ?

[M(urea)=60 g mol^-1, K_f= 1.5°C Kg Mol^-1]

(a)	2.4 g
(b)	3.6 g
(c)	6.0 g
(d)	72.0 g

146.

The increase in boiling water of a solution containing 06 g urea in 200 g water is 0.5 °C. Find the molal elevation constant.

(a)	1.0 K kg mol^-1
(b)	10 K · g · mol^-1
(c)	10 K kg mol^-1
(d)	10 K kg mol

147.

How much grams of NaOH will be required to prepare 500 grams solution containing 10% W/W NaOH solution ?

(a)	5 grams
(b)	50 grams
(c)	100 grams
(d)	0.5 grams

148.

Which of the following aqueous solutions will have the maximum osmotic pressure at constant temperature ?

(a)	1 m H₂SO_4(aq)
(b)	1 m NaCl_(aq)
(c)	1 M H₂SO_4(aq)
(d)	1 M NaCl_(aq)

149.

One component of a solution follows the Raoult's law over the entire range 0 ≤ x₁ ≤ 1. the second component must follow Raoult's law in the range x₂ is _____ .

(a)	close to zero
(b)	close to 1
(c)	0 ≤ x₂ ≤ 0.5
(d)	0 ≤ x₂ ≤ 1

150.

If osmotic pressure of a solution at 27°C is 0.82 bar, what will be the molarity of solution ?

(a)	0.33 M
(b)	0.033 M
(c)	3.3 M
(d)	0.066 M

Showing 141 to 150 out of 157 Questions