# IIT JEE/IIT JEE Solutions Mcq Questions part 2 Sample Test,Sample questions

## Question: `0.1 M solution of glucose and 0.1 M solute of urea are placed on two sides of semipermeable membrane to equal heights. Which of the following is correct? `

1.There will be flow of water from glucose side to urea.

2.There will be flow of water from urea side to glucose.

3.There will be no net flow across the membrane.

4.Glucose solution will move into urea solution.

1.1 M

2.2 M

3.0.3 M

4.3 M.

1.180

2.360

3.420

4.60

1.720 mm Hg

2.345.1 mm Hg

3.765.1 mm Hg

4.745.1 mm Hg

1.0.7 M

2.0.3 M

3.0.2 M

4.1.8 M.

1.4.50%

2.13.50%

3.1.50%

4.9%.

1.0.1

2.0.2

3.0.3

4.0.4.

## Question: `?Partial vapour pressure of a solution component is directly proportional to its mole fraction?. This statement is known as `

1.Henrys law

2.Raoults law

3.Distribution law

4.Ostwalds dilution law.

1.250

2.200

3.400

4.1000

## Question: `A colligative property depends upon `

1.number of particles in solution

2.number of molecules in solution

3.number of ions of solute

4.None of the above

## Question: `A colligative property is `

1.electrical conductivity

2.conductivity

3.osmotic pressure

4.molecular pressure

## Question: `A crystal of blue vitriol is placed in its saturated solution. Which of the following observations would you expect to make provided the temperature is constant? A super ? saturated solution will be formed `

1.A super ? saturated solution will be formed

2.The crystals will be dissolved

3.No change will occur

4.Crystals will separate out

## Question: `A liquid is in equilibrium with its vapour at its boiling point. On the average the molecules of the two phases will have `

1.same magnitude of Interparticle forces

2.same potential energy

3.same total energy

4.same free energy.

## Question: `A non-volatile electrolyte dissolved in an aqueous solution in same molal proportion as non-electrolyte produces `

1.same colligative effect

2.higher colligative effect

3.lower colligative effect

4.no colligative effect.

## Question: `A non-volatile electrolyte dissolved in equimolal proportion as non-volatile non-electrolyte produces `

1.same colligative effect

2.lower colligative effect

3.higher colligative effect

4.no colligative effect.

1.110

2.54

3.60

4.45

## Question: `A supersaturated solution is a metastable solution whose solute concentration `

1.continuously changes

2.exceeds the solubility

3.is less than the solubility

4.is equal to the solubility of that substance in water

## Question: `According to Raoults law the relative lowering of vapour pressure of a solution of non-volatile solute is equal to mole fraction of solvent `

1.equal to mole fraction of solvent

2.equal to mole fraction of solute

3.directly proportional to mole fraction of solute

4.equal to normality of the solution.

## Question: `According to Raoults law for solution containing non-volatile solution the relative lowering of vapour pressure for solution is `

1.inversely proportional to mole fraction of the solute

2.directly proportional to mole fraction of solute

3.equal to mole fraction of solute

4.equal to mole fraction of solvent

1.205%

2.95%

3.98.30%

4.20%

1.0.192

2.0.96

3.0.2

4.2

1.18 L

2.9 L

3.0.9 L

4.1.8 L.

## Question: `An azeotropic solution of two liquids has boiling point lower than ether when it `

1.shows no deviation from Raoults law

2.shows a positive deviation from Raoults law

3.is saturated.

4.None of them

## Question: `At 298 K the vapour pressure of pure X is 50 mm Hg and that of pure Y is 60 mm Hg. If 1 mole of X and 1 mole of Y are mixed than vapour pressure of the solution was found out to be 57.5 mm Hg. The solution `

1.shows negative deviation

2.shows positive deviation

3.forms a constant boiling

4.behaves ideally

1.1

2.3-Jan

3.3

4.unpredictable

## Question: `During molecular weight determination of non-volatile solute by cryoscopic method Beckmann Thermometer is used to determine the `

1.depression in freezing point or elevation in boiling point

2.exact freezing point of the solution

3.exact boiling point of the solution

4.lowering in vapour pressure

## Question: `Ebullioscopic constant depends upon `

1.nature of solvent

2.nature of solute

3.conditions of temperature and pressure

4.all the above factors.

1.I IV

2.II III

3.I III

4.II IV.

## Question: `For dilute solutions Raoults law states that `

1.the relative lowering in vapour pressure is equal to the mole fraction of the solute

2.the relative lowering in vapour pressure is equal to the amount of solvent in the solution

3.the vapour pressure of the solution is proportional to that of the solvent

4.lowering of vapour pressure is equal to the mole fraction of the solution

## Question: `For which of the following solutes i is greater than 1? `

1.Urea

2.Sucrose

3.Sodium chloride

4.glucose.

1.7.1 pka

2.56 torr

3.7.1 atm

4.6.1 atm

1.1g

2.2g

3.10 g

4.20 g

## Question: `Hydrochloric acid solutions A and B have concentrations 0.5 N and 0.1 N respectively. The volumes of solutions A and B required to make 2 litres of 0.2 N hydrochloric acid are `

1.0.5 L of A + 1.5 L of B

2.1.5 L of A + 0.5 L of B

3.1.0 L of A + 1.0 L of B

4.0.75 L of A + 1.25 L of B.

## Question: `If 0.1 M solution of glucose and 0.1 M solution of urea are placed on two sides of the semipermeable membrane to equal heights then it will be correct to say that `

1.There will be no net movement across the membrane

2.Glucose will flow towards urea towards urea solution

3.Urea will flow towards glucose solution

4.Water will flow from urea solution to glucose solution.

1.morality

2.normality

3.molality

4.boiling point

## Question: `In the phenomenon of osmosis the semipermeable membrane allows the passage if `

1.solute particles

2.solvent molecules only

3.both solute and solvent

4.None.

## Question: `In which of the following cases 1% aq Solution will have the lowest freezing point? `

1.Glucose

2.Fructose

3.Urea

4.Potassium acetate

1.Molality

2.Molarity

3.Mole fraction

4.% (W/V).

## Question: `Isotonic solutions are those which have same `

1.osmotic pressure

2.vapour pressure

3.boiling points

4.velocity

## Question: `Molality of a solution is the number of moles of solute in `

1.1 kg of solvent

2.1 litre of solvent

3.1 litre of solute

4.1 mole of solute

1.345.46

2.245.46 gm

3.34.576 gm

4.360

## Question: `or solutions the relation PV = nRT is called `

1.Ideal equation of state

2.Charles equation

3.Vant Hoff equation

4.Boyle-Vanst Hoff equation

## Question: `Osmotic pressure of a solution increases by `

1.decreasing the temperature

2.increasing the volume

3.increasing the number of molecules of the solute

4.none of the above.

1.I

2.I II

3.II III

4.III IV.

1.2.71 gm

2.54.30%

3.5.43%

4.3%

## Question: `Raoults law for solutions containing non-volatile solute is concerned with lowering of `

1.boiling point

2.vapour pressure

3.osmotic pressure

4.melting point

1.isotonic

2.isopiestic

3.hypertonic

4.isomorphic.

## Question: `The addition of a non-volatile solute to the solvent results in lowering of `

1.vapour pressure as well as boiling point

2.vapour pressure as well as density

3.vapour pressure as well as freezing point

4.boiling point as well as freezing point.

1.0.1 mole

2.0.01 mole

3.1.0 mole

4.1.5 mole

## Question: `The amount of gas dissolving in a given volume of the liquid decreases when `

1.temperature and pressure both are decreased

2.temperature and pressure both are increased

3.temperature is increased

4.pressure is decreased

1.5.4

2.0.18

3.1.8

4.3.6

1.1.86

2.2.86

3.1.58

4.3.95

## Question: `The enthalpy change on mixing water and ethanol at room temperature is `

1.Zero

2.Positive

3.Negative

4.Depends on proportion of alcohol in the solution.

1.0.17 m

2.0.7 m

3.1 m

4.0.34 m.

1.1.5 M

2.1.0 M

3.0.4 M

4.0.1 M

1.0.01 M

2.0.1 M

3.1 M

4.0.5 M.

1.M/5

2.M/10

3.M/2

4.M/100.

1.90

2.556

3.55.6

4.9

1.0.01 M

2.0.005 M

3.0.02 M

4.0.10 M.

1.2.5 M

2.3.0 M

3.1.0 M

4.1.5 M

1.0.46 N

2.0.23 N

3.2.3 N

4.4.6 N.

1.1.25

2.0.5

3.12.5

4.5

## Question: `The osmotic pressure of a solution of benzoic acid in benzene is found to be half the expected value. This is due to the `

1.association of benzoic acid molecules forming dimmers

2.wrong method of measurement of osmotic pressure

3.limitation of the theory of osmotic pressure

4.ionization of benzoic acid

1.1

2.2

3.0.5

4.2.5

## Question: `The solution that can distil with change in composition is called `

1.saturated solution

2.azeotrope

3.zerotrope

4.none-ideal solution

1.79.5 mm Hg

2.91.43 mm Hg

3.81.45 mm Hg

4.66.5 mm Hg

1.11.22 mm Hg

2.21.42 mm Hg

3.24.2 mm Hg

4.11.42 mm Hg

1.18 mm

2.36 mm

3.72 mm

4.27 mm

1.75 ml

2.150 ml

3.100 ml

4.200 ml

## Question: `Two beakers contain 1 L and 250 ml of pure water respectively. What is same in them? `

1.number of moles

2.number of molecules

3.molarity

4.mass.

1.1

2.2

3.3

4.4

## Question: `Two solutions A and B are separated by a semipermeable membrane. Solution B has greater vapour pressure than solution A. Water will flow from `

1.A to B

2.B to A

3.No flow of water

4.Direction of flow cannot be predicted.

1.100 ml

2.125 ml

3.500 ml

4.62.5 ml.

1.2900

2.368

3.184

4.92

## Question: `When a saturated solution of sodium chloride is heated it becomes `

1.unsaturated

2.supersaturated

3.remains saturated

4.attains equilibrium conditions

## Question: `Which is an example of colligative property? `

1.Boiling point

2.osmosis

3.freezing point

4.osmotic pressure.

## Question: `Which of the following are not colligative properties? `

1.Relative lowering of vapour pressure

2.Surface tension

3.Osmosis

4.Both b and c.

1.I II

2.II

3.I IV

4.II IV.

## Question: `Which of the following is not a colligative property? `

1.Boiling pressure

2.Lowering of freezing point

3.Vapour pressure

4.Osmotic pressure

## Question: `Which of the following solutions will have highest value of depression in freezing point? `

1.6% aqueous solution of glucose

2.6% aqueous solution of urea

3.6% aqueous solution of sucrose

4.all the above will have same value.

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