Question # 1

Butter is solution of

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Liquid in liquid

Solid and liquid

Liquid and solid

Liquid and gas

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

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

Which solution is an example of solid in gas

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Fog

Steel

smoke

Air

Which concentration unit is independent of temperature.

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Molarity

Molality

ppm

both a and b

Depression in the F.P is directly proportional to

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Molarity of solution

Molarity of solvent

Molality of solvent

Molality of solution

The molal boiling point constant is the ration of the elevation in boiling point to

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Molarity

Molality

Mole fraction of solvent

Mole fraction of solute

The liquid pair which is not completely miscible is

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CH₃OH and water

Alcohol and water

Phenol and water

Benzene and toluene

Molarity of pure water is

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1

18

55.5

6

Water and Phenol are partially miscible to each other at room temperature when both liquids are mixed together which is upper layer.

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Water in Phenol

Phenol and water

Pure phenol

Pure water

Heat of solution of an ionic compound is equal to.

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Hydration energy

Lattice energy

Slum of both 'a' and 'b'

Difference of both a and b

Solubility of which substance decreases by increasing temperature.

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NaNO3

KNO2

NaCl

Ce2(SO4)3

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

Which of the following solutions has the highest boiling point

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5.85% solution of sodium chloride

18.0% solution of glucose

6.0% solution of urea

All have the same boiling points

Molal boiling constant for water is 0.52 ^oC. If 6 g of urea is dissolved in 100 g of water, what will be its boiling point.

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100.52 ^oC

-100.52^oC

100^oC

99^oC

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

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

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Chemistry Fsc Part 1 Chapter 9 Online Test MCQs With Answers

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