Question # 1

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

Which pair of mixture is called ideal solution.

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Chlorobenzene and bromobenzene

Water alcohol

Water ether

HCl and 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

Unit of mole fraction is

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mol dm-3

mol kg-1

g dm-3

No unit

18 g of 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

Azeotropic mixture can be separated into pure components by

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Distillation

Fractional distillation

Vacuum distillation

None

An aqueous solution of ethanol is water has vaporu pressure.

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Equal to the of water

Equal to that of ethanol

More than that of H2O

Less than that of water

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

Upper consulate temperature for water phenol system is.

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150 ^oC

65.9 ^oC

120 ^oC

130 ^oC

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

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

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NaCl

CuSO4

Na2CO3

NH4Cl

Which of the following solutions will have the highest boiling point

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0.1 M NaCI

0.1 M CaCI₂

0.1 M FeCI₃

0.1 M glucose

The temperature which partially immiscible pair of liquid leads to the formation of a single phase in called.

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Transition temperature

Absolute temperature

Consulate temperature

Room temperature

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

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

Solubility curve of CaCl26H2O shows

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Decrease in solubility with increase of temperature

Increase in solubility with increase of temperature

Discontinuous increase in solubility with temperature

No effect of temperature on solubility

An azeotropic mixture of two liquids boils at lower temperature than either of them when.

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It is saturated

It shows positive deviation from Raoult's law

It shows negative deviation from Raoult's law

It is metastable

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