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Solutions

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Number of Questions: 25
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Tags: Chemistry AIPMT Medical Entrance AIEEE IIT Engineering Entrance CBSE Class XI Class XII Solutions Units of Concentration Solubility of Solids Solubility of Gases Colligative Properties
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What is a homogeneous mixture

  1. binary solution

  2. components are in the same phase

  3. mixture of a gas and liquid

  4. a solution containing more than two components


Correct Option: B
Explanation:

ANS.  2.

20% ethanol by mass means

  1. 20 gm of ethanol is disolved in 80gm of solvent

  2. 20 gm of ethanol is disolved in 80gm of water

  3. 20 gm of ethanol is disolved 100gm of solvent

  4. 1000 ml of solution contains 20 gm of ethanol


Correct Option: A
Explanation:

ANS.  1.

30% by volume of solution of glucose means

  1. 30 g of glucose is disolved in 100ml. of water

  2. 30 ml of glucose is mixed in 1000 ml. of water

  3. 30 ml of glucose is disolved in water so that the total volume is 100 ml.

  4. 30 ml of glucose is mixed with 70 ml. of water


Correct Option: C
Explanation:

Answer 3

If a solution contains n components, sum of mole fractions of all the components is equal to

  1. n

  2. 1

  3. 2 n

  4. nxn


Correct Option: B
Explanation:

ANS 2.

Ethanol disolves in water because

  1. ethanol donates proton to water

  2. it is an acid base reaction

  3. they form hydrogen bonding

  4. ethanol gets ionised in water


Correct Option: C
Explanation:

ANS.   3.

Solubility of a substance is defined as

  1. the maximum amount of that substance that can be dissolved in a specified amount of solvent

  2. the minimum amount of that substance that can be dissolved in a specified amount of a solvent

  3. the maximum amount of that substance that can be dissolved in a minimum amount of a solvent

  4. the minimum amount of a solvent into which it can be dissolved


Correct Option: A
Explanation:

The correct answer is (1).

Crystallisation is possible only in

  1. a saturated solution

  2. a binary mixture

  3. an unsaturated solution

  4. the solution of solute and solvent are in equal amount


Correct Option: A
Explanation:

ANS.  1.

The solubility of a liquid in a liquid

  1. increases with increase in pressure

  2. decreases with increase in pressure

  3. always increase with increase in temperature

  4. is not affected by pressure


Correct Option: D
Explanation:

ANS.  4.

Solubility of a gas in a liquid

  1. decreases with increase in temperature

  2. increases with increase in temperature

  3. is not affected by temperature

  4. increases with decrease in pressure


Correct Option: A
Explanation:

Solubility of a gas in a liquid decreases with increase in temperature.

The dissolution of a gas in a liquid is

  1. an andothermic process

  2. an exothermic process

  3. an equillibrium process

  4. a process in which volume remains constant


Correct Option: B
Explanation:

ANS. 2.

Henry's law is for

  1. a solution of a gas in a gas

  2. a solution of a gas in a liquid

  3. a solution of a liquid in a liquid

  4. a solution of a solid in a liquid


Correct Option: B
Explanation:

Henry's law is for a solution of a gas in a liquid.

When a non-volatile solute is added in a volatile solvent

  1. vapour pressure decreases

  2. vapour pressure increases

  3. vapour pressure is not affected

  4. vapour pressure first decreases then increases


Correct Option: A
Explanation:

ANS. 1.

The value of Henry's constant depends upon the

  1. partial pressure

  2. mole fraction

  3. nature of the gas

  4. pressure of the solution


Correct Option: C
Explanation:

The value of Henry's constant depends upon the nature of the gas.

___________ are examples of ideal solution.

  1. n-hexane and n-heptane

  2. Ethanol and water

  3. Carbon dioxide and water

  4. Milk and water


Correct Option: A
Explanation:

.

Rault's law is for

  1. a gas-liquid solution

  2. a liquid-liquid solution

  3. for all type of solutions

  4. a liquid-liquid and solid-liquid solution


Correct Option: D
Explanation:

Option 4 is the correct answer.

At high altitudes, the climbers suffer from

  1. anaemia

  2. hypertension

  3. blood pressure

  4. anoxia


Correct Option: D
Explanation:

ANS 4.

In an ideal solution,

  1. A-A interactions are equal to B-B interactions

  2. A-A and B-B interactions are equal to A-B anteractions

  3. A-A and B-B interactions are less than A-B interactions

  4. A-A and B-B interactions are more than A-B interactions


Correct Option: B
Explanation:

Option (2) is correct.

Azeotropes are of

  1. two types

  2. three types

  3. four types

  4. five types


Correct Option: A
Explanation:

ANS  1.

A non-ideal solution shows

  1. only negative deviation from Rault's law

  2. only positive deviation from Rault's law

  3. both positive and negative deviation from Rault's law

  4. no deviation from Rault's law


Correct Option: C
Explanation:

.

Osmotic pressure is a

  1. Property of solution.

  2. colligative property

  3. property of a non-ideal solution

  4. property of an ideal solution


Correct Option: B
Explanation:

ANS  2.

The colligative property depends upon

  1. the mole fraction of solute

  2. the mole fraction of solvent

  3. the nass of solution

  4. the mass of solvent


Correct Option: A
Explanation:

ANS 1.

A solution of sodium and mercury is

  1. an ideal solution

  2. a non-ideal solution

  3. a binary mixture

  4. an amalgam


Correct Option: D
Explanation:

ANS  4

When a non-volatile solute is added to a volatile solvent, there is

  1. an increase in freezing point

  2. a decrease in boiling point

  3. an increase in vapour pressure

  4. an increase in boiling point


Correct Option: D
Explanation:

ANS  4.

The molal depression constant can also be called

  1. rydberg constant

  2. cryoscopic constant

  3. depression constant

  4. elevation constant


Correct Option: B
Explanation:

ANS 2.

The molal elevation constant can also be called

  1. ebullioscopic constant

  2. cryoscopic constant

  3. elevation constant

  4. rydberg constant


Correct Option: A
Explanation:

ANS  1.

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