Explore topic-wise MCQs in SRMJEEE .

This section includes 43 Mcqs, each offering curated multiple-choice questions to sharpen your SRMJEEE knowledge and support exam preparation. Choose a topic below to get started.

1.

Benzene and toluene form nearly ideal solutions. At 20°C, the vapour pressure of benzene is 75 torr and that of toluene is 22 torr. The partial vapour pressure of benzene at 20°C for a solution containing 78 g of benzene and 46 g of toluene in torr is [AIEEE 2005]

A. 25
B. 50
C. 53.5
D. 37.5
Answer» C. 53.5
2.

0.5 molal aqueous solution of a weak acid (HX) is 20% ionized. If Kf for water is 1.86 K kg mol-1, the lowering in freezing point of the solution is [CBSE AIPMT 2007]

A. –0.56 K
B. –1.12 K
C. 0.56 K
D. 1.12 K
Answer» E.
3.

The molarity of a NaOH solution by dissolving 4 g of it in 250 ml water is [West Bengal JEE 2010]

A. 0.4 M
B. 0.8 M
C. 0.2 M
D. 0.1 M
Answer» B. 0.8 M
4.

If sodium sulphate is considered to be completely dissociated into cations and anions in aqueous solution, the change in freezing point of water 
(ΔTf), when 0.01 mol of sodium sulphate is dissolved in 1 kg of water is (Kf = 1.86 K kg mol-1) [AIEEE 2010]

A. 0.0744 K
B. 0.0186 K
C. 0.0372 K
D. 0.0558 K
Answer» E.
5.

On mixing, heptanes and octane form an ideal solution. At 373 K, the vapour pressures of the two liquid components (heptanes and octane) are 105 kPa and 45 kPa respectively. Vapour pressure of the solution obtained by mixing 25.0 g of heptanes and 35 g of octane will be (molar mass of heptanes = 100 g mol-1 and of octane = 114 g mol-1) [AIEEE 2010]

A. 96.2 kPa
B. 144.5 kPa
C. 72.0 kPa
D. 36.1 kPa
Answer» D. 36.1 kPa
6.

25.3 g of sodium carbonate, Na2CO3 is dissolved in enough water to make 250 ml of solution. If sodium carbonate dissociates completely, molar concentration of sodium Ion, Na+ and carbonate ions, CO32- are respectively (Molar mass of NasCO3 = 106 g mol-1[CBSE AIPMT 2010]

A. 1.90 M and 1.910 M
B. 0.477 M and 0.0477 M
C. 0.955 M and 1.910 M
D. 1.910 M and 0.955 M
Answer» E.
7.

An aqueous solution is 1.00 molal in KI. Which change will cause the vapour pressure of the solution to increase? [CBSE AIPMT 2010]

A. addition of 1.00 molal KI
B. addition of water
C. addition of NaCl
D. addition of Na2SO4
Answer» C. addition of NaCl
8.

A solution of sucrose (molar mass = 342 g mol-1) has been prepared by dissolving 68.5 g of sucrose in 100 g of water. The freezing point of the solution obtained will be (Kf for water = 1.86 K kg mol-1) [CBSE AIPMT 2010]

A. + 0.372°C
B. – 0.570°C
C. – 0.372°C
D. – 0.520°C
Answer» D. – 0.520°C
9.

A 5% solution of cane sugar (molar mass 342 is isotonic with 1% of a solution of an unknown solute. The molar mass of unknown solute in g/mol is [AIEEE 2011]

A. 34.2
B. 136.2
C. 171.2
D. 68.4
Answer» E.
10.

Ethylene glycol is used as an antifreeze in a cold climate. Mass of ethylene glycol which should be added to 4 kg of water to prevent it from freezing at –6°C will be: (Kffor water = 1.86 K kg mol–1 and molar mass of ethylene glycol = 62 g mol–1) [AIEEE 2011]

A. 304.60 g
B. 804.32 g
C. 204.30 g
D. 400.00 g
Answer» C. 204.30 g
11.

58.5 gm of NaCl and 180 gm of glucose were separately dissolved in 1000 ml of water. Identify the correct statement regarding the elevation of boiling point (b.p.) of the resulting solutions. [West Bengal JEE]

A. NaCl solution will show higher elevation of b.p.
B. Glucose solution will show higher elevation of b.p.
C. Both the solutions will show equal elevation of b.p.
D. The b.p. elevation will be shown by neither of the solutions
Answer» B. Glucose solution will show higher elevation of b.p.
12.

Frances Descroizilles in 18th century developed

A. burette
B. pipette
C. beaker
D. measuring cylinder
Answer» C. beaker
13.

One of most common kind of titration involves exact neutralization of an alkali (-OH-) by a/an

A. base
B. acid
C. salt
D. suspension
Answer» C. salt
14.

Solution is highly concentrated when solute is in

A. high concentration
B. low concentration
C. high temperature
D. low temperature
Answer» B. low concentration
15.

When there is a low concentration of solute in a solution, it is known as

A. diluted solution
B. saturated solution
C. concentrated solution
D. unsaturated solution
Answer» B. saturated solution
16.

Only liquid metal at room temperature is

A. sodium
B. iron
C. mercury
D. aluminum
Answer» D. aluminum
17.

In air nitrogen gas acts as

A. solute
B. solvent
C. gaseous solute
D. aqueous solute
Answer» C. gaseous solute
18.

Methanol and water are

A. miscible
B. non miscible
C. forms saturated solution
D. forms supersaturated solution
Answer» B. non miscible
19.

Mass of solute dissolved in 100g of solution refers to

A. percentage of solution
B. molarity of solution
C. molality of solution
D. none of above
Answer» B. molarity of solution
20.

 In presence of crystals of solute a supersaturated solution is

A. not stable
B. stable
C. cannot be made
D. none of above
Answer» B. stable
21.

Solutions that contain solid solutes in liquid solvents are called

A. liquids in solids
B. solids in liquids
C. solids in solids
D. solids in gas
Answer» C. solids in solids
22.

When NaCl is dissolved in water, negative end of water molecules is attracted towards

A. Cl
B. H
C. He
D. Na
Answer» E.
23.

Colloids can

A. scatter light
B. not scatter light
C. absorb heat
D. evolve heat
Answer» B. not scatter light
24.

Concentration of solution is the

A. quantity of solvent in solute
B. quantity of solute in given solvent
C. unit to measure concentration
D. quantity of gas dissolved in liquid
Answer» C. unit to measure concentration
25.

An unsaturated solution

A. cannot dissolve more solute
B. cannot add more solvent
C. can add more solute
D. cannot be made
Answer» D. cannot be made
26.

Molarity of solution which contains 40 g urea dissolved in 500cm3 is

A. 1.2 M
B. 1.389 M
C. 1.334 M
D. 1.5 M
Answer» D. 1.5 M
27.

 When tiny particles of a substance are dispersed through medium then mixture is called

A. alloys
B. amalgams
C. suspension
D. colloid
Answer» E.
28.

Substance present in lesser amount in solution is

A. solute
B. solvent
C. aqueous solvent
D. none of above
Answer» B. solvent
29.

In amalgams solvent is

A. gas
B. liquid
C. solid
D. none of above
Answer» D. none of above
30.

Concentration of a dilute solution

A. is high
B. is in comparable
C. can be both A and B
D. is low
Answer» E.
31.

 In solutions particles are

A. invisible
B. visible by naked eye
C. visible by ordinary microscope
D. visible by electron microscope
Answer» B. visible by naked eye
32.

Mass of NaOH present per dm3 of 0.25M NaOH solution is

A. 10 g
B. 8 g
C. 5 g
D. 2 g
Answer» B. 8 g
33.

Solid solutions of metals are called

A. alloys
B. amalgams
C. saturated solutions
D. supersaturated solution
Answer» B. amalgams
34.

 Commercially concentrated HCl is

A. 0.4
B. 0.5
C. 0.37
D. 0.8
Answer» D. 0.8
35.

At a particular temperature solution which cannot dissolve more solute is called

A. saturated solution
B. unsaturated solution
C. aqueous solution
D. supersaturated solution
Answer» B. unsaturated solution
36.

 Solubility is amount of solute dissolved in

A. 50 g of solvent
B. 100 g of solvent
C. 250 g of solvent
D. 200 g of solvent
Answer» C. 250 g of solvent
37.

Solution of mercury with other metals is called

A. amalgam
B. saturated solution
C. supersaturated solution
D. unsaturated solution
Answer» B. saturated solution
38.

A mixture that has uniform composition throughout is called

A. saturated solution
B. super saturated solution
C. solution
D. solvent
Answer» D. solvent
39.

 Number of moles of solute dissolved per dm3 of solution is

A. molality
B. percentage
C. concentration
D. molarity
Answer» E.
40.

Solution of copper and zinc forms

A. sodium
B. mercury
C. brass
D. silver
Answer» D. silver
41.

 To prepare ammonia gas, gaseous mixture of

A. hydrogen and chlorine is used
B. hydrogen and nitrogen is used
C. hydrogen and helium is used
D. hydrogen and iodine is used
Answer» C. hydrogen and helium is used
42.

Fog is a solution of

A. air in water vapors
B. air in air
C. vapors in vapors
D. water vapors in air
Answer» E.
43.

By passing hydrogen gas through vegetable oil, it is converted in to

A. butter
B. milk
C. ghee
D. none of above
Answer» D. none of above