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

Here you will find NCERT MCQ Questions for Class 11 Physics with Answers PDF Free Download based on the important concepts and topics given in the textbook as per CBSE new exam pattern. 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 Class 11 Physics. 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.


Q1. One end of a towel dips into a bucket full of water and other end hangs over the bucket. It is found that after some time the towel becomes fully wet. It happens

(a) Because viscosity of eater is high
(b) Because of the capillary action of cotton threads
(c) Because of gravitational force
(d) Because of evaporation of water.

(b) Because of the capillary action of cotton threads


Q2. If the surface of a liquid is plane, then the angle of contact of the liquid with the walls of container is

(a) Acute angle
(b) Obtuse angle
(c) 90°
(d) 0°

(d) 0°


Q3. Water rises up to a height h, in a capillary tube of radius r. the mass of the water lifted in the capillary tube is M. if the radius of the capillary tube is doubled, the mass of water that will rise in the capillary tube will be

(a) M
(b) 2M
(c) M/2
(d) 4M

(b) 2M


Q4. 5 g of water rises in the bore of capillary tube when it is dipped in water. If the radius of bore capillary tube is doubled, the mass of water that rises in the capillary tube above the outside water level is

(a) 1.5 g
(b) 10 g
(c) 5 g
(d) 15 g

(b) 10 g


Q5. The height of a liquid in a fine capillary tube

(a) Increases with an increase in the density of a liquid
(b) Decreases with a decrease in the diameter of the tube
(c) Decreases with an increase in the surface tension
(d) Increases as the effective value of acceleration due to gravity is decreased

(d) Increases as the effective value of acceleration due to gravity is decreased


Q6. At critical temperature, the surface tension of a liquid

(a) Is zero
(b) Is infinity
(c) Is the same as that at any other temperature
(d) Can not be determined

(a) Is zero


Q7. 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

(a) 2 cm
(b) 3 cm
(c) 6 cm
(d) 9 cm

(c) 6 cm


Q8. When the angle of contact between a solid and a liquid is 90°, then

(a) Cohesive force > Adhesive force
(b) Cohesive force < Adhesive force

(c) Cohesive force = Adhesive force

(d) Cohesive force >> Adhesive force

(c) Cohesive force = Adhesive force


Q9. Water rises up to a height of 5 cm in a capillary tube of radius 2 mm. what is the radius of the radius of the capillary tube if the water rises up to a height of 10 cm in another capillary?

(a) 4 mm
(b) 1 mm
(c) 3 mm
(d) 1 cm

(b) 1 mm


Q10. If the surface of a liquid is plane, then the angle of contact of the liquid with the walls of container is

(a) Acute angle
(b) Obtuse angle
(c) 90°
(d) 0°

(d) 0°


Q11. Liquid pressure depends upon

a) height of the liquid column
b) directions
c) shape of the liquid surface
d) area of the liquid surface

a) height of the liquid column


Q12. The height of water in a capillary tube of radius 2 cm is 4 cm. what should be the radius of capillary, if the water rises to 8 cm in tube?

(a) 1 cm
(b) 0.1 cm
(c) 2 cm
(d) 4 cm

(a) 1 cm


Q13. Water rises up to a height of 4 cm, in a capillary tube immersed vertically in water. What will be the length of water column in the capillary tube, if the tube is immersed in water, at an angle of 60° with the vertical?

(a) 4 cm
(b) 6 cm
(c) 8 cm
(d) 2 cm

(c) 8 cm


Q14. The surface of water in contact with glass wall is

(a) Plane
(b) concave
(c) convex
(d) Both b and c

(b) concave


Q15. Pressure inside two soap bubbles is 1.01 and 1.02 atmospheres. ratio between their volume is

(a) 102 : 101
(b) (102)3 : (101)3
(c) 8 : 1
(d) 2 : 1

(c) 8 : 1


Q16. The pressure at the bottom of a tank containing a liquid does not depend on

a) area of the bottom surface
b) nature of the liquid
c) height of the liquid column
d) acceleration due to gravity

a) area of the bottom surface


Q17. Specific gravity of a body is numerically equal to

a) relative density of the body
b) density of body in water
c) weight of the body in water
d) weight of the body in air

a) relative density of the body


Q18. Assertion: A small iron needle sinks in water while a large iron ship floats.
Reason: The shape of iron needle is like a flat surface while the shape of a ship is that which makes it easier to float.

a) Assertion is correct, reason is incorrect
b) Assertion is incorrect, reason is correct
c) Assertion is correct, reason is correct; reason is not a correct explanation for assertion
d) Assertion is correct, reason is correct; reason is a correct explanation for assertion

a) Assertion is correct, reason is incorrect


Q19. Consider an iceberg floating in sea water. The density of sea water is 1.03 g/cc and that of ice is 0.92 g/cc. The fraction of total volume of iceberg above the level of sea water is near by

a) 11%
b) 8%
c) 3%
d) 1.8%

a) 11%


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

a) rises
b) remains same
c) lowers
d) None of these

a) rises


Q21. Water rises up to a height of 4 cm, in a capillary tube immersed vertically in water. What will be the length of water column in the capillary tube, if the tube is immersed in water, at an angle of 60° with the vertical?

(a) 4 cm
(b) 6 cm
(c) 8 cm
(d) 2 cm

(c) 8 cm


Class 11 Physics MCQs Questions with Answers Chapter Wise


Practicing NCERT Physics MCQs With Answers Pdf Class 11 is one of the best ways to prepare for the CBSE Class 11 board exam. There is no substitute for consistent practice whether one wants to understand a concept thoroughly or one wants to score better. If you have any queries regarding The CBSE Class 11 Physics MCQs Multiple Choice Questions with Answers, drop a comment below and we will get back to you soon.

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