Select the correct option based on statements below:

Assertion (A): Insects are observed to walk on the surface of water.
Reason (R): This is due to the viscous force of water acting on the insect's legs.
 
1. Both (A) and (R) are True and (R) is the correct explanation of the (A).
2. Both (A) and (R) are True but (R) is not the correct explanation of the (A).
3. (A) is True but (R) is False.
4. (A) is False but (R) is True.
Subtopic:  Surface Tension |
 61%
From NCERT
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Given below are two statements: 

Assertion (A): Water flows through a smooth horizontal tube with a narrowing cross-section and its pressure increases.
 
Reason (R): Bernoulli's equation for fluids states that \(P+\frac{1}{2}\rho v^2+\rho gh= \) constant along a streamline.
 
1. Both (A) and (R) are true and (R) is the correct explanation of (A).
2. Both (A) and (R) are true but (R) is not the correct explanation of (A).
3. (A) is true but (R) is false.
4. (A) is false but (R) is true.
Subtopic:  Bernoulli's Theorem |
 59%
From NCERT
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Given below are two statements: 
Assertion (A): Smaller drops of water resist deformation forces better than larger drops.
Reason (R): Excess pressure inside the drop is inversely proportional to its radius.
 
1. Both (A) and (R) are True and (R) is the correct explanation of (A).
2. Both (A) and (R) are True but (R) is not the correct explanation of (A).
3. (A) is True but (R) is False.
4. (A) is False but (R) is True.
Subtopic:  Surface Tension |
 79%
From NCERT
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Given below are two statements: 
Assertion (A): The stream of water flowing at high speed from a garden hose, and pipe tends to spread like a fountain when held vertically up but tends to narrow down when held vertically down.
Reason (R): In any steady flow of an incompressible fluid, the volume flow rate of the fluid remains constant.
 
1. Both (A) and (R) are true and (R) is the correct explanation of (A).
2. Both (A) and (R) are true but (R) is not the correct explanation of (A).
3. (A) is true but (R) is false.
4. Both (A) and (R) are false.
Subtopic:  Equation of Continuity |
 64%
From NCERT
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Given below are two statements: 
Assertion (A): When height of a tube is less than liquid rise in the capillary tube, the liquid does not overflow.
Reason (R): Product of radius of meniscus and height of liquid in capillary tube always remains constant.
 
1. Both (A) and (R) are true and (R) is the correct explanation of (A).
2. Both (A) and (R) are true but (R) is not the correct explanation of (A).
3. (A) is true but (R) is false.
4. (A) is false but (R) is true.
Subtopic:  Capillary Rise |
 69%
From NCERT
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Given below are two statements: 
Assertion (A): If a liquid in a vessel is stirred and left to itself, the motion disappear after few minutes.
Reason (R): The moving liquid exerts equal and opposite force.
 
1. Both (A) and (R) are true and (R) is the correct explanation of (A).
2. Both (A) and (R) are true but (R) is not the correct explanation of (A).
3. (A) is true but (R) is false.
4. Both (A) and (R) are false.
Subtopic:  Viscosity |
From NCERT
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Given below are two statements: 
Assertion (A): A large force is required to draw apart normally two glass plates enclosing a thin water film.
Reason (R): Water works as glue and sticks two glass plates.
 
1. Both (A) and (R) are true and (R) is the correct explanation of (A).
2. Both (A) and (R) are true but (R) is not the correct explanation of (A).
3. (A) is true but (R) is false.
4. (A) is false but (R) is true.


 
Subtopic:  Surface Tension |
From NCERT
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Given below are two statements: 
Assertion (A): The water rises higher in a capillary tube of small diameter than in a capillary tube of large diameter.
Reason (R): The height through which liquid rises in a capillary tube is inversely proportional to the diameter of the capillary tube.
 
1. Both (A) and (R) are True and (R) is the correct explanation of (A).
2. Both (A) and (R) are True but (R) is not the correct explanation of (A).
3. (A) is True but (R) is False.
4. (A) is False but (R) is True.
Subtopic:  Capillary Rise |
 91%
From NCERT
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Given below are two statements: 
Assertion (A): A small drop of mercury is spherical but bigger drops are oval in shape.
Reason (R): Surface tension of liquid decreases with increase in temperature.
 
1. Both (A) and (R) are True and (R) is the correct explanation of (A).
2. Both (A) and (R) are True but (R) is not the correct explanation of (A).
3. (A) is True but (R) is False.
4. (A) is False but (R) is True.
Subtopic:  Surface Tension |
 63%
From NCERT
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Given below are two statements: 
Assertion (A): To float, a body must displace liquid whose weight is greater than actual weight of the body.
Reason (R): During floating the body will experience no net downward force in that case.
 
1. Both (A) and (R) are true and (R) is the correct explanation of (A).
2. Both (A) and (R) are true but (R) is not the correct explanation of (A).
3. (A) is true but (R) is false.
4. Both (A) and (R) are false.
Subtopic:  Archimedes' Principle |
From NCERT
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