Question # 1

Which of the following solution 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 point

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

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Molarity

Molality

Mole fraction of solute

Mole fraction of solvent

If 18 g glucose (C₆H₁₂C₆) is present in 1000 g of an aqueous of glucose it is said to be

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1 molal

1.1 molal

0.5 molal

0.1 molal

Which of the following will have the highest boiling point at 1 atm pressure?

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0.1 M NaCl

0.1 M Sucrose

0.1 M BaCl₂

0.1 M Glucose

The volume of 0.1 M H₂SO₄required to neutralize completely 40 ml of 0.2 M NaOH solution is

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10 ml

40 ml

20 ml

50 ml

The substance which is present in large quantity is called a :

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Solute

Solvent

solutiion

None of Above

If the ionic product of a solution is less than the solubility product, the solution is

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Supersaturated

Unsaturated

Ideal

Saturated

How many cm³of 1 M H₂SO₄required to neutralize 10 cm³of 1 M NaOH

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2 cm³

2.5 cm³

5 cm³

10 cm³

According to Raoult's law

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Relative lowering of V.P. is equal to mole fraction of solute

The lowering of V.P. is directly proportional to mole fraction of solute

V.P. of solvent above solution is equal to product of V.P. of pure solvent and mole fraction of solvent ins solution

All of the above

1.0 g pure calcium carbonate was found to require 50 ml of dilute HCl for complete reaction. The strength of HCl solution is given by

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4 N

2 N

0.4 N

0.2 N

Colligative properties are the properties of :

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Dilute solutions which behave as nearly ideal solutions.

Concentrated solutions which behave as nearly non-ideal solutions.

Both(i) and (ii)

Neither (i) nor (ii)

Which one of the following has discontinuous solubility curve

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CaCI₂6H₂O

NaCI

KCI

NaNO₃

The depression of freezing point is directly proportional to

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Mole fraction of the solution

Molarity of the solution

Molality of the solution

Molarity of the solvent

A solution contains 1.2046 x 10²⁴hydrochloric acid molecules in one dm³of the solution. The strength of the solution is

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6 N

2 N

4 N

8 N

Osmotic pressure of a solution increases by

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Decreasing the temperature

Increasing the volume

Increasing the number of molecules of the solute

None of the above

Use of glycol as anti freeze in the automobile is an important application of

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Colligative property

Raoult's law

Fractional crystallization

Prrhenivs law

The sum of mole fractions (X) of components of solution is equal to

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100

200

One

Zero

Which is independent of temperature

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Molarity

Molality

Normality

Mole fraction

The molar boiling point constant is the ration of elevation in boiling point to :

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Molarity

Mole fraction of solvent

Mole fraction of solute.

The ratio of moles of a particular component of solution to total moles of all components of solution is :

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Mole fraction.

Molality.

Molarity.

Normality.

The process of osmosis was first discovered by

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Nollet

Pfeffer

Traube

Dutrochet

The boiling point of an a zeotropic mixture of water and ethye alcohol is less than that of water and alcohol. The mixture shows

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That solution is highly saturated

No deviation from Raoult's law

Positive deviation from Raoult's law

Negative deviation from Raoult's law

Maximum freezing point falls in

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Camphor

Naphthalene

Benzene

Water

Which one of the following is a colligative property?

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Surface tension

Osmotic pressure

Viscosity

Refractive index

Solubility of a substance in water decreases with rise in temperature except

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CaCI₂. 6H₂O

Pb(NO₃)₂

K₂Cr₂O₇

Ce₂(SO₄)₃

Which one of the following mixture shows positive deviation form Rault's law and forms an azetrope with minimum boiling point

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Methanol + CCI₄

Methanol + acetone

Ether + HCI

Acetone + chloroform

Which of the following is not a colligative property?

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Depression in freezing point

Elevation of boiling point

Osmotic pressure

Modification of refractive index

A solution of glucose is of methanol in water has vapor pressure :

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Equal that of water.

Equal to that of methanol.

More than that of water.

Less than that f water.

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

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8.1 dm³

1.7 dm³

1.8 dm³

6.1 dm³

In which type of following solutions the total volume of solutions may not be necessarily equal to sum of volumes of solute and solvent ?

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Percentage volume/volume

Percentage volume/weight

Percentage weight/volume

Percentage weight/weight

The sum of mole percent of all the components of solution is always equal to :

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Less than 100

One

100

10

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