MCQs of Solutions

Solutions MCQs

Showing 71 to 80 out of 157 Questions

71.

Which of the following having maximum boiling point ?

(a)	1.1 M glucose solution
(b)	1.1 M Na₂SO₄ solution
(c)	1.1 M KCl solution
(d)	1.1 M C₆H₁₂O₆ solution

72.

Which of the following having same Van't Hoff factor as that of K₃[Fe(CN)₆] ?

(a)	Al₂(SO₄)₃
(b)	K₂SO₄
(c)	Al(NO₃)₃
(d)	KCl

73.

What is the molarity of a solution prepared by dissolving 7.1 gram Na₂SO₄ in 100 ml. water

(a)	0.5M
(b)	2M
(c)	0.2M
(d)	0.05M

74.

Show the relation between the osmotic pressure of the solutions prepared in 1 liter water by dissolving 10 gram glucose (P₁), 10 gram urea (P₂) and 10 gram Sucrose,(P₃) respectively.

(a)	P₂ > P₁ > P₃
(b)	P₂ > P₃ > P₁
(c)	P₁ > P₂ > P₃
(d)	P₃ > P₂ > P₁

75.

The vapour pressure of benzene is found to be 640 mm when 2.175 gram unknown substance is dissolved in 39 gram benzene, the vapour pressure is found 600 mm what will be the molar mass of the substance ?

(a)	49.50
(b)	69.60
(c)	60.61
(d)	70.71

76.

3% Glucose solution and 1% unknown substance's solutions are isotonic. What will be the molecular mass of unknown substance ?

(a)	90
(b)	360
(c)	180
(d)	60

77.

Which of the following aqueous solution having least vapour pressure ?

(a)	0.1 m Sodium phosphate
(b)	0.1 m Barium chloride
(c)	0.1 m Urea
(d)	0.1 m NaCl

78.

What will be the osmotic pressure of the solutions prepared by dissolving 1.75 gram sucrose in 150 ml. solution at 17°C temperature ?

(a)	0.406
(b)	8.12
(c)	0.822
(d)	0.0406

79.

Which formula is correct to get molecular weight of the substance (M₂) with reference to osmotic pressure ?

(a)	$M_{2} = (\frac{m_{2}}{π}) VRT$
(b)	$M_{2} = (\frac{m_{2}}{V}) \frac{RT}{π}$
(c)	$M_{2} = (\frac{m_{2}}{V}) \frac{π}{RT}$
(d)	$M_{2} = (\frac{m_{2}}{V}) nRT$

80.

The vapour pressure of benzene is 75 mm and that of toluene is 22 mm 20°C temperature. The solution prepared by mixing 78 gram benzene and 46 gram toluene then, what will be the partial pressure of benzene in the mixture ?

(a)	25
(b)	50
(c)	100
(d)	75

Showing 71 to 80 out of 157 Questions