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Questions

Question 1 Multiple Choice (Single Answer)

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
Question 2 Multiple Choice (Single Answer)

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
Question 3 Multiple Choice (Single Answer)

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
Question 4 Multiple Choice (Single Answer)

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
Question 5 Multiple Choice (Single Answer)

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
Question 6 Multiple Choice (Single Answer)

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
Question 7 Multiple Choice (Single Answer)

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
Question 8 Multiple Choice (Single Answer)

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
Question 9 Multiple Choice (Single Answer)

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
Question 10 Multiple Choice (Single Answer)

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
Question 11 Multiple Choice (Single Answer)

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
Question 12 Multiple Choice (Single Answer)

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
Question 13 Multiple Choice (Single Answer)

___________ are examples of ideal solution.

  1. n-hexane and n-heptane
  2. Ethanol and water
  3. Carbon dioxide and water
  4. Milk and water
Question 14 Multiple Choice (Single Answer)

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
Question 15 Multiple Choice (Single Answer)

At high altitudes, the climbers suffer from

  1. anaemia
  2. hypertension
  3. blood pressure
  4. anoxia
Question 16 Multiple Choice (Single Answer)

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
Question 17 Multiple Choice (Single Answer)

Azeotropes are of

  1. two types
  2. three types
  3. four types
  4. five types
Question 18 Multiple Choice (Single Answer)

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
Question 19 Multiple Choice (Single Answer)

Osmotic pressure is a

  1. Property of solution.
  2. colligative property
  3. property of a non-ideal solution
  4. property of an ideal solution
Question 20 Multiple Choice (Single Answer)

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
Question 21 Multiple Choice (Single Answer)

A solution of sodium and mercury is

  1. an ideal solution
  2. a non-ideal solution
  3. a binary mixture
  4. an amalgam
Question 22 Multiple Choice (Single Answer)

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
Question 23 Multiple Choice (Single Answer)

The molal depression constant can also be called

  1. rydberg constant
  2. cryoscopic constant
  3. depression constant
  4. elevation constant
Question 24 Multiple Choice (Single Answer)

The molal elevation constant can also be called

  1. ebullioscopic constant
  2. cryoscopic constant
  3. elevation constant
  4. rydberg constant
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