Solutions (Chapter Test - Medical) - Class 12 MCQ

solute molecules only

solvent molecules only

solvent and solute molecules both

neither solute nor solvent molecules

The solution obtained by mixing equal
volumes of (b) and (c)

similar to A–A and B–B interactions

greater than A–A and B–B interactions

smaller than A–A and B–B interactions

unpredictable

0.01 M Na₂SO₄

0.01 M KNO₃

0.015 M urea

0.015 M glucose

HNO₃ + H₂O solution

C₂H₅OH + H₂O solution

C₆H₆ + C₆H₅CH₃ solution

none of these

250 mm, 550 mm

350 mm, 450 mm

350 mm, 700 mm

550 mm, 250 mm

1% solution

1 molar solution

1 molal solution

1 N solution

Sugar crystals in cold water

Sugar crystals in hot water

Powdered sugar in cold water

Powdered sugar in hot water

10% > 3% > 2% > 1%

1% > 2% >3% >10%

1% > 3% >10% >2%

10% > 1% >3% >2%

Units of atmospheric pressure and osmotic
pressure are the same

In reverse osmosis, solvent molecules move
through semipermeable membrane from a
region of lower concentration of solute to a
region of higher concentration

The value of molal depression constant
depends on nature of solvent

Relative lowering of vapour pressure, is a
dimensionless quantity

1 : 2 : 3

3 : 2 :2

1 : 1 : 2

none of these

Raw mangoes shrivel when pickled in brine

Haemolysis is observed in 0.98% NaCl
solution

Wilted flowers revive when placed in fresh
water

Blood cells collapsed when suspended in
saline water

1/4

1/2

3/5

2/5

Higher the value of k_H(in bar)at a given pressure, the lower is the solubility of the gas in the liquid

Solubility of a gas in liquid decreases with
increase in temperature and pressure

To minimise the painful effects to deep sea
divers,O₂ is diluted with less soluble He gas

The solubility of a gas in a liquid is governed by
Henry’s law

Both are isotonic

I is hypertonic

II is hypertonic

None is correct

Freezing point will be lowest for solution 1

Freezing point will be highest for solution 4

Boiling point will be highest for solution 3

Vapour presure will be highest for solution 2

0.2

0.3

0.5

0.7

endosmosis which results in excess of water

exosmosis which results in increasing water
retention in inter cellular spaces

exosmosis which results in dilution of blood

all of these

there is positive deviation from Raoult’s law

there is negative deviation from Raoult’s law

there is no deviation from Raoult’s law

molecular masses of A and B are also
required for calculating the deviation

there is positive deviation from Raoult’s law

there is negative deviation from Raoult’s law

there is no deviation from Raoult’s law

molecular masses of A and B are also
required for calculating the deviation