Surface Tension of Water by Capillary Rise and Effect of Detergents NEET Questions

Physics - Experimental Skills

Surface Tension of Water by Capillary Rise and Effect of Detergents MCQ Questions


7.
When a detergent is added to water, it reduces the surface tension by:

NEET - 2023

A.
Breaking hydrogen bonds
B.
Forming new bonds
C.
Reducing density of water
D.
Increasing temperature
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ANSWER :
A. Breaking hydrogen bonds
8.
The height of the capillary rise depends on:

NEET - 2016

A.
The radius of the tube
B.
Temperature only
C.
The mass of the liquid
D.
Volume of liquid in the tube
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ANSWER :
A. The radius of the tube
9.
Which of the following liquids has the highest surface tension?

NEET - 2024

A.
Water
B.
Glycerin
C.
Ethanol
D.
Detergent solution
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ANSWER :
A. Water
10.
What is the effect of increasing temperature on surface tension?
A.
Increases
B.
Decreases
C.
Remains constant
D.
First increases, then decreases
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ANSWER :
B. Decreases
11.
The surface tension of water is measured using:

NEET - 2017

A.
Capillary rise method
B.
Direct weight measurement
C.
Using a spring balance
D.
Using a torsion balance
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ANSWER :
A. Capillary rise method
12.
The capillary rise of water in a tube is due to:
A.
Cohesion only
B.
Adhesion only
C.
Both cohesion and adhesion
D.
None of the above
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ANSWER :
C. Both cohesion and adhesion