# Mechanical Properties of Fluids MCQ Questions for Class 11 Physics Chapter 10 with Answers

NCERTCOURSE.COM given here the NCERT chapter-wise Multiple Choice Questions from Class 11 Physics book Chapter 10 Mechanical Properties of Fluids with Answers Pdf free download. This may assist you to understand and check your knowledge about the chapters. Students also can take a free test of the Multiple Choice Questions of Mechanical Properties of Fluids. Each question has four options followed by the right answer. These MCQ Questions are selected supported by the newest exam pattern as announced by CBSE.

(i) mass
(ii) density
(iii) volume
(iv) weight

(iii) volume

(i) 0°
(ii) 90°
(iii) 140°
(iv) 8°

(iv) 8°

## Q3. If the surface of a liquid is plane, then the angle of contact of the liquid with the walls of container is

(i) Acute angle
(ii) Obtuse angle
(iii) 90°
(iv) 0°

(iv) 0°

## Q4. Liquid pressure depends upon

(i) height of the liquid column
(ii) directions
(iii) shape of the liquid surface
(iv) area of the liquid surface

(i) height of the liquid column

## Q5. Sudden fall in the atmospheric pressure by a large amount shows

(i) rain
(ii) fair weather
(iii) cloud wave
(iv) storm

(iv) storm

## Q6. Pressure inside two soap bubbles is 1.01 and 1.02 atmospheres. ratio between their volume is

(i) 102 : 101
(ii) (102)3 : (101)3
(iii) 8 : 1
(iv) 2 : 1

(iii) 8 : 1

## Q7. The surface of water in contact with glass wall is

(i) Plane
(ii) concave
(iii) convex
(iv) Both b and c

(ii) concave

## Q8. Hydraulic lifts and hydraulic brakes are based on

(i) Pascal’s law
(ii) Bernoulli’s principle
(iii) Archimedes’ principle
(iv) Stoke’s law

(i) Pascal’s law

## Q9. Hot syrup flows faster because its

(i) surface tension increases
(ii) surface tension decreases
(iii) viscosity decreases
(iv) viscosity increases

(iii) viscosity decreases

(i) Capillarity
(ii) Viscosity
(iii) Gravity
(iv) Elasticity

(i) Capillarity

(i) 1 cm
(ii) 0.1 cm
(iii) 2 cm
(iv) 4 cm

(i) 1 cm

## Q12. Pressure applied to enclosed fluid is

(i) transmitted unchanged to every portion of the fluid and wall of containing vessel.
(ii) increased in proportion to the mass of the fluid and then transmitted
(iii) diminished and transmitted to wall of container
(iv) increased and applied to every part of the fluid

(i) transmitted unchanged to every portion of the fluid and wall of containing vessel.

## Q13. In streamlined flow, the velocity of the liquid in contact with the containing vessel is

(i) zero.
(ii) minimum but not zero.
(iii) infinite.
(iv) large.

(i) zero.

## Q14. When the angle of contact between a solid and a liquid is 90°, then

(i) Cohesive force > Adhesive force
(ii) Cohesive force < Adhesive force

(iii) Cohesive force = Adhesive force

(iv) Cohesive force >> Adhesive force

(iii) Cohesive force = Adhesive force

Q15. A capillary tube when immersed vertically in a liquid records a rise of 3 cm. if the tube is immersed in the liquid at an angle of 60° with the vertical, then length of the liquid column along the tube will be

(i) 2 cm
(ii) 3 cm
(iii) 6 cm
(iv) 9 cm

(iii) 6 cm

## Q16. Specific gravity of a body is numerically equal to

(i) relative density of the body
(ii) density of body in water
(iii) weight of the body in water
(iv) weight of the body in air

(i) relative density of the body

## Q17. One of the major factors that determines the laminar (streamline(iv) Or turbulent nature of flow of the liquid is

(i) velocity of flow.
(ii) pressure of the liquid.
(iii) length of the path.
(iv) surface tension.

(i) velocity of flow.

## Q18. When there are no external forces, the shape of a liquid drop is determined by

(i) Surface tension of the liquid
(ii) Density of liquid
(iii) Viscosity of liquid
(iv) Temperature of air only

(i) Surface tension of the liquid

## Q19. Choose the wrong statement from the following.

(i) Small droplets of a liquid are spherical due to surface tension
(ii) Oil rises through the wick due to capillarity
(iii) In drinking the cold drinks through a straw, we use the phenomenon of capillarity
(iv) Gum is used to stick two surfaces. In this process we use the property of Adhesion

(iii) In drinking the cold drinks through a straw, we use the phenomenon of capillarity

## Q20. A block of ice floats on a liquid of density 1.2 in a beaker then level of liquid when ice completely melt

(i) rises
(ii) remains same
(iii) lowers
(iv) None of these

(i) rises

## Q21. The maximum velocity of the liquid upto which the flow is streamlined does not depend upon

(ii) pressure of the liquid.
(iii) density of the liquid.
(iv) viscosity of the liquid.

(ii) pressure of the liquid.

Q22. A liquid is kept in a glass vessel. If the liquid solid adhesive force between the liquid and the vessel is very weak as compared to the cohesive force in the liquid, then the shape of the liquid surface near the solid should be

(i) Concave
(ii) Convex
(iii) Horizontal
(iv) Almost vertical

(ii) Convex

(i) Capillarity
(ii) Viscosity
(iii) Gravity
(iv) Elasticity

(i) Capillarity

## Q24. What makes it difficult to separate two glass sheets having a drop of water between them?

(i) surface tension
(ii) viscosity
(iii) gravity
(iv) atmospheric pressure

(i) surface tension

## Q25. Insects are able to run on the surface of water because

(i) surface tension makes its surface to behave as an elastic membrane.
(ii) insects swim on water.
(iii) insects have less weight.
(iv) of Archimede’s upthrust.

(i) surface tension makes its surface to behave as an elastic membrane.

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