Which one of the following liquid pairs will exhibit a positive deviation from Raoult’s law
Options
(a) n-hexane and n-heptane (b) Ethanol and chloroform (c) Phenol and aniline (d) Chloroform and acetone
Vapour pressure of dilute aqueous solution of glucose is 750 mm of mercury at 373K. The mole fraction of solute is
Options
(a) 1/76 (b) 1/7.6 (c) 1/38 (d) 1/0.1
Correct Answer:
1/76
Explanation: […]
In which of the solutions containing following solutes, its normality is equal to its molarity
Options
(a) Boric acid (b) Sodium carbonate (c) Sulphuric acid (d) Phosphoric acid
Correct Answer:
Boric acid
Explanation: […]
The mixture of n-hexane and n-heptane is an example of
Options
(a) real solution (b) dilute solution (c) ideal solution (d) non-real solution
Correct Answer:
ideal solution
Explanation:
An ideal solution is […]
A molal solution is one that contains one mole of a solute in
Options
(a) 1000 g of the solvent (b) one litre of the solvent (c) one litre of the solution (d) […]
A 20 mass percent H₂SO₄ solution has density 1.15 g mL⁻¹.Molarity of the solution will be (molar mass of H₂SO₄ = 98 g mol⁻¹).
Options
(a) 2.50 mol L⁻¹. (b) 1.15 mol L⁻¹. […]
A solution containing 6 g urea per litre is isotonic with a solution containing
Options
(a) 5.85 g NaCl per litre (b) 34.2 g sucrose per litre (c) 36.0 g glucose per litre […]
When 10 g of a non-volatile solute is dissolved in 100 g of benzene , it raises boiling point by 1⁰ C then molecular mass of the solute is (Kb for benzene = 2.53 km⁻¹) […]
Increase in boiling point of a sucrose solution is 0.1 K, then what is increases in boiling point of the same concentration of NaCl solution
Options
(a) 0.4 K (b) 0.2 K (c) […]
The molar fraction of nitrogen, in a mixture containing 70 grams nitrogen, 120 grams of oxygen and 44 grams of carbon dioxide is
Options
(a) 0.36 (b) 0.34 (c) 0.29 (d) 5
Correct Answer: […]
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