Chemistry Class 11 Question Answer & Video

Properties of Liquid

Video For All Chapters Chemistry Class 11

1. There will be total 20 MCQ in this test.
2. Please keep a pen and paper ready for rough work but keep your books away.
3. The test will consist of only objective type multiple choice questions requiring students to mouse-click their correct choice of the options against the related question number.
4. No negative marking for incorrect choice.
5. Please click on “Finish the Test” when you want to exit.
6. All the best – Happy Studying.

1. Boiling does not occur when:

Liquid is not very dense

Liquid is very concentrated

Liquid is heated in an open vessel

Liquid is heated in a closed vessel

Question 1 of 20

2. The liquids boil at lower temperature at high altitude because:

Atmospheric pressure is low at high altitudes

Viscosity of a liquid increases at high altitude

Atmospheric pressure is high at high altitude

Viscosity of a liquid decreases at high altitude

Question 2 of 20

3. The vapour pressure of a liquid depends upon:

Nature of liquid

Density of liquid

Surface area of liquid

Volume of liquid

Question 3 of 20

4. A liquid enclosed in 1.0L flask at 298K. The vapour pressure exerted by the liquid is 20.0 mm. when the same liquid is enclosed in a flask of 5L capacity at the same temperature, the vapour pressure of the liquid will be:

40mm

20.0mm

10mm

1000mm

Question 4 of 20

5. On increasing the temperature of water, the surface tension of water:

Remains constant

Increases

Shows irregular behaviour

Decreases

Question 5 of 20

6. The phenomenon responsible for spherical shape of liquid drops is:

Viscosity

Surface tension

Diffraction

Interference

Question 6 of 20

7. The S.I unit of viscosity is:

Nm^-1s^-1

Nm^-1 s²

N m^-2s

N m s

Question 7 of 20

8. Vapour density of a diatomic elementary gas is 16. The atomic mass of gas is:

32

64

16

8

Question 8 of 20

9. Greater the viscosity, the:

More quickly the liquid expands

More quickly the liquid flows

More slowly the liquid flows

More slowly the liquid expands

Question 9 of 20

10. Vapour pressure of a liquid decreases with increase in:

Temperature

Polarity of liquid molecules

Pressure

Viscosity

Question 10 of 20

11. The magnitude of the surface tension of a liquid depends on:

Chemical composition of the molecules

Repulsive force between the molecules.

Attractive force between the molecules.

The third power of the distance between two interacting molecules

Question 11 of 20

12. Dry O₂ is:

Same as moist O₂

Lighter than moist O₂

Lighter than dry air

Heavier than moist O₂

Question 12 of 20

13. A student was given Water, Benzene, Orange juice, and Glycerol to pipette out in four different beakers. The liquid that will be relatively difficult to be sucked into the pipette will be:

Orange juice

Water

Benzene

Glycerol

Question 13 of 20

14. The mass of 112 ml of N₂ at STP on liquefaction is:

0.84 g

0.56 g

0.28 g

0.14 g

Question 14 of 20

15. Viscosity arises due to:

Kinetic energy of molecules of fluid

Density of fluid

Surface tension

Internal friction between layers of fluid

Question 15 of 20

16. Which of the following sets consists of gases with same rate of diffusion:

CO₂, N₂O, C₃H₈

CO₂, NO₂, C₃H₈

H₂, D₂, He

N₂, CO₂, C₂H₄

Question 16 of 20

17. The property of a liquid that increases with a increase in temperature is:

Viscosity

Vapour pressure

Surface tension

Both Viscosity and Surface tension

Question 17 of 20

18. The S.I unit of Surface tension is:

Nms^-1

Nm^-1

Nm^-1s^-1

Nm²s^-1

Question 18 of 20

19. The vapour pressure of water at 300 K in a closed container is 0.4 atm. If the volume of container is doubled, its vapour pressure at 300 K will be:

0.8 atm

0.4 atm

0.6 atm

0.2 atm

Question 19 of 20

20. Boiling is condition of:

Free vapourisation throughout the liquid

Restricted vapourisation throughout the liquid

Liquefaction of liquid

Increasing the density of the liquid

Question 20 of 20

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