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Test: Viscosity & Surface Tension (22 August) - JEE MCQ


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10 Questions MCQ Test Daily Test for JEE Preparation - Test: Viscosity & Surface Tension (22 August)

Test: Viscosity & Surface Tension (22 August) for JEE 2024 is part of Daily Test for JEE Preparation preparation. The Test: Viscosity & Surface Tension (22 August) questions and answers have been prepared according to the JEE exam syllabus.The Test: Viscosity & Surface Tension (22 August) MCQs are made for JEE 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Test: Viscosity & Surface Tension (22 August) below.
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Test: Viscosity & Surface Tension (22 August) - Question 1
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Fluids offer resistance to motion due to internal friction, this property is called?

Detailed Solution for Test: Viscosity & Surface Tension (22 August) - Question 1
The property of fluids that offers resistance to motion due to internal friction is called viscosity. Viscosity is the measure of a fluid's resistance to flow, and it is commonly referred to as "thickness" or "stickiness" of a fluid. So, the correct answer is Option A: viscosity.
Test: Viscosity & Surface Tension (22 August) - Question 2
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The friction in a flowing fluid is called ________.

Detailed Solution for Test: Viscosity & Surface Tension (22 August) - Question 2
The friction in a flowing fluid is called "viscosity." Viscosity is the property of a fluid that causes it to resist flowing due to internal friction. So, the correct answer is Option C: Viscosity.
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Test: Viscosity & Surface Tension (22 August) - Question 3
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Consider the following:

Water is more viscous than blood.
Blood is more viscous than water.
They cannot be compared.
Which of the above is the best relation between the viscosities of blood and water?

Detailed Solution for Test: Viscosity & Surface Tension (22 August) - Question 3
The best relation between the viscosities of blood and water is "2 only," which means that blood is more viscous than water. So, the correct answer is Option B.
Test: Viscosity & Surface Tension (22 August) - Question 4
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Two capillary tubes of different diameters are dipped in water. The rise of water is _______
Detailed Solution for Test: Viscosity & Surface Tension (22 August) - Question 4
The rise of water in capillary tubes is greater in the tube of smaller diameter. This is due to the capillary action, which is more pronounced in narrower tubes. So, the correct answer is Option C.
Test: Viscosity & Surface Tension (22 August) - Question 5
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Which one of the following affects the efficiency of oil transportation through a pipeline?
Detailed Solution for Test: Viscosity & Surface Tension (22 August) - Question 5
The efficiency of oil transportation through a pipeline is affected by viscosity. Higher viscosity oils will flow more slowly and may require more energy for transportation. So, the correct answer is Option C: Viscosity.
Test: Viscosity & Surface Tension (22 August) - Question 6
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The viscosity of gases increases with:
Detailed Solution for Test: Viscosity & Surface Tension (22 August) - Question 6
The viscosity of gases increases with an increase in temperature. This is because at higher temperatures, gas molecules have more kinetic energy and move faster, resulting in increased internal friction and higher viscosity. So, the correct answer is Option A.
Test: Viscosity & Surface Tension (22 August) - Question 7
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A water drop is divided into 27 equal droplets. The pressure difference between the inner and outer side of the big drop will be:
Detailed Solution for Test: Viscosity & Surface Tension (22 August) - Question 7
When a water drop is divided into 27 equal droplets, the pressure difference between the inner and outer side of the big drop will be 1/3 of that for a smaller droplet. This is because the pressure inside a droplet is inversely proportional to its radius. So, the correct answer is Option B.
Test: Viscosity & Surface Tension (22 August) - Question 8
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On dipping a capillary in water, the mass of the water that rises in it is 'm'. If another capillary of double the radius of the first is dipped into the water, the mass of water risen will be:
Detailed Solution for Test: Viscosity & Surface Tension (22 August) - Question 8

Concept:

A capillary tube of radius R is immersed in water and water rises in it to a height H. Mass of water in the capillary tube is M. If the radius of the tube is doubled, then mass of water that will rise in the capillary tube with its radius also doubled, so mass in the capillary tube will also become two times.

Test: Viscosity & Surface Tension (22 August) - Question 9
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The rise of a liquid in a capillary tube is due to:
Detailed Solution for Test: Viscosity & Surface Tension (22 August) - Question 9
The rise of a liquid in a capillary tube is due to surface tension. Surface tension causes the liquid to climb or rise in a narrow tube against the force of gravity. So, the correct answer is Option D.
Test: Viscosity & Surface Tension (22 August) - Question 10
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Dancing of small pieces of camphor on the surface of water is due to:
Detailed Solution for Test: Viscosity & Surface Tension (22 August) - Question 10
The dancing of small pieces of camphor on the surface of water is due to surface tension. Surface tension is the force that causes the surface of a liquid to behave like a stretched elastic sheet, and it is responsible for the unique behavior of small particles floating on the water's surface. So, the correct answer is Option B.
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