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

Mechanical Properties of Fluids Class 11 Physics MCQs Questions with Answers

Check the below NCERT MCQ Questions for Class 11 Physics Chapter 10 Mechanical Properties of Fluids with Answers Pdf free download. MCQ Questions for Class 11 Physics with Answers were prepared based on the latest exam pattern. We have Provided Mechanical Properties of Fluids Class 11 Physics MCQs Questions with Answers to help students understand the concept very well.

Class 11 Physics Chapter 10 Quiz

Class 11 Physics Chapter 10 MCQ Online Test

You can refer to NCERT Solutions for Class 11 Physics Chapter 10 Mechanical Properties of Fluids to revise the concepts in the syllabus effectively and improve your chances of securing high marks in your board exams.

Mechanical Properties of Fluids Class 11 Physics MCQ online test

Q1.	Plants get water through the roots because of
	A.Capillarity
	B.Viscosity
	C.Gravity
	D.Elasticity

Ans: Capillarity

Q2.	Water rises up to a height h1 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

Ans: 2M

Q3.	A number of small drops of mercury coalesce adiabatically to form a single drop. The temperature of drop
	A.Increases
	B.Is infinite
	C.Remains unchanged
	D.May decrease or increase depending upon size

Ans: May decrease or increase depending upon size

Q4.	When a soap bubble is charged
	A.It contracts
	B.It expands
	C.It does not undergo any change in siz
	D.None of these

Ans: It expands

Q5.	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
	A.Concave
	B.Convex
	C.Horizontal
	D.Almost vertical

Ans: Convex

Q6.	A capillary tube is placed vertically in a liquid. If the cohesive force is less than the adhesive force, then
	A.The meniscus will be convex upwards
	B.The liquid will wet the solid
	C.The angle of contact will be obtuse
	D.The liquid will drip in the capillary tube

Ans: The liquid will wet the solid

Q7.	When there are no external forces, the shape of a liquid drop is determined by
	A.Surface tension of the liquid
	B.Density of liquid
	C.Viscosity of liquid
	D.Temperature of air only

Ans: Surface tension of the liquid

Q8.	Water can rise up to a height of 12 cm in a capillary tube. If the tube is lowered to keep only 9 cm above the water level then the water at the upper end of the capillary will
	A.Overflow
	B.From a convex surface
	C.From a flat surface
	D.From a concave surface

Ans: From a flat surface

Q9.	Rain drops are spherical in shape because of
	A.Surface tension
	B.Capillary
	C.Downward motion
	D.Acceleration due to gravity

Ans: Surface tension

Q10.	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

Ans: Cohesive force = Adhesive force

Q11.	When a capillary tube is immersed vertically in water the capillary rise is 3 cm. if the same capillary tube is inclined at angle of 60° to the vertical, the length of the water column in the capillary tube above that of the outside level is
	A.6 cm
	B.1 cm
	C.8 cm
	D.Zero

Ans: 6 cm

Q12.	Water rises in a capillary tube to a certain height such that the upward force due to surface tension is balanced by 75 × 10-4 N, forces due to the weight of the liquid. If the surface tension of water is 6 × 10-2 N/m, the inner-circumference of the capillary must be
	A.1.25 × 10-2 m
	B.0.50 × 10-2 m
	C.6.5 × 10-2 m
	D.12.5 × 10-2 m

Ans: 12.5 × 10-2 m

Q13.	Plants get water through the roots because of
	A.Capillarity
	B.Viscosity
	C.Gravity
	D.Elasticity

Ans: Capillarity

Q14.	A soap bubble (surface tension 30 × 10-3 N/m) has radius 2 cm. the work done in bobbling the radius is
	A.Zero
	B.1.1355 × 10-4 J
	C.2.261 × 10-4 J
	D.4.532 × 10-4 J

Ans: 4.532 × 10-4 J

Q15.	Surface tension of a soap solution is 1.9 × 10-2 N/m. work done in blowing a bubble of 2.0 cm diameter will be
	A.7.6 × 10-6 p J
	B.15.2 × 10-6 p J
	C.1.9 × 10-6 p J
	D.1 × 10-4 p J

Ans: 15.2 × 10-6 p J

Q16.	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.

Ans: Because of the capillary action of cotton threads

Q17.	A drop of oil is placed on the surface of water. Which of the following statement is correct?
	A.It will remain on it as a sphere
	B.It will spread as a thin layer
	C.It will partly be as spherical droplets and partly as thin film
	D.It will float as distorted drop on the water surface.

Ans: It will spread as a thin layer

Q18.	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.0.334027777777778
	D.0.0840277777777778

Ans: 0.334027777777778

Q19.	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