Chemistry – Solution and Colligative Properties (MCQ Maharashtra HSC Board)

Chemistry – Solution and Colligative Properties – TEST    (MCQ Maharashtra 12th Board)

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#1. When a liquid is heated its vapour pressure:

Continuously decreases

Increases and becomes constant at the boiling point of the liquid

No predictable change

Continuously increases

#2. The molecular weight of acetic acid in benzene is found to be nearly 118g per mole. This shows that in benzene acetic acid molecules:

Decompose

Associate to give a trimer

Dissociate

Associate to give a dimer

#3. Which one of the following is a colligative property?

Boiling point

Lowering of vapour pressure

Vapour pressure

Melting point

#4. The solubility of gas in liquid decreases with increase in:

Pressure

Temperature

Both of these

None of these

#5. The effect of pressure on solubility of a gas in liquid is given by:

Roult’s law

All of these

Henry’s law

Boyle’s law

#6. One liter of water containing 90gm of glucose, the mole fraction of glucose in water is:

0.0089

0.089

0.00089

0.05

#7. A solution contains 1.5 moles of sugar and 18.5 moles of solvent hence the mole fraction of the solute is:

0.065

0.085

0.075

0.081

#8. The solution having the same osmotic pressure are called?

Hypertonic solution

Hypotonic solution

Isotonic solution

None of these

#9. The relative lowering of vapour pressure of a solution is proportional to the:

Nature solvent

Mole fraction of solute

Nature of solute

Mole fraction of solvent

#10. A centimolar solution is diluted 10 times its molarity would become

0.05M

0.1M

0.01M

0.001M

#11. Mole fraction of glycerin in solution of 36g of water and 46g of glycerin is:

0.2

0.1

0.8

0.6

#12. 20g of NaOH(molar mass=40g mol-1 is dissolved in 500 cm) of water molarity of resulting solution is:

0.1m

0.5m

0.01m

1.0m

#13. Which one of the following solution will exhibit highest boiling point:

0.01M sodium sulphate

0.15M glucose

0.015M glucose

0.01M potassium nitrate

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