Question # 1

Which pair of mixture is called ideal solution.

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Chlorobenzene and bromobenzene

Water alcohol

Water ether

HCl and water

Molal boiling point elevation depends upon

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Nature of solvent

Natrue of solute

Vapour pressure of solution

None of these

In a solution 7.8 g of benzene and 46 g of toluene is present The mole fraction of benzene is.

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1/2

1/3

1/5

1/6

Which concentration unit is independent of temperature.

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Molarity

Molality

ppm

both a and b

An aqueous solution of ethanol in water has vapour pressure

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Equal to that water

Equal to that of ethanol

More than that of H₂O

less than that of water

A solution of glucose is 10% to volume in which 1 g mole of it is dissolved will be

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1 dm³

1.8 dm³

200 cm³

900 cm³

An aqueous solution of ethanol in water has vapour pressure.

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Equal to that of water

Equal to that of ethanol

More than that of water

Less than that of water

When an ionic compound is dissolved in water, it dissociate into positive and negative ions, which are surrounded byH2O molecule, This process is known as.

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Hydrolysis

Hydration

Saturation

solvolysis

Salt of weak acid with strong base when dissolved in water gives.

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Acidic solution

Basic solution

Neutral solution

None of above

In azeotropic mixture showing positive deviation from Raoult's law, the volume of the mixture is.

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slightly more than the total volume of the components

Slightly less than the total volume of the component

Equal to the total volume of the components

None of these

Which one of the following salts dissolved in water to form a solution with a pH greater than 7

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NaCl

CuSO4

Na2CO3

NH4Cl

The unit of mole fraction is

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Moles dm^-3

Moles kg^-1

Gram dm^-3

None

18 g glucose is dissolved in 90 g of water. The relative lowering of vapour pressure is equal to.

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1/5

5.1

1/51

6

Colligative properties are the properties of.

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Dilute solution which behave as nearly ideal solutions

Concentrated solutions which behave as nearly non ideal solutions

Both a and b

Neither a nor b

What amount of NaOH is required to prepare 500 g of 0.5 molal solution.

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10 g

20 g

30 g

40 g

The molal boiling point constant is the ratio of elevation of boiling point to

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Molarity

Mole fraction of solvent

Molality

Mole fraction of solute

18 g glucose is dissolved in 90 g o water, The relative lowering of vapour pressure is equal to.

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1/5

5.1

1/51

6

Solubility of which substance decreases by incressing temperature.

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NaNO3

KNO2

NaCl

Ce2(SO4)3

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