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Fluid Mechanics Questions

Practice 18 Fluid Mechanics questions with detailed answers and explanations. Free MCQs, PYQs, and mock test questions for NEET, JEE, GATE, SSC and more.

๐Ÿ“š
18
Total Questions
๐ŸŸข
3
Easy
๐ŸŸก
8
Medium
๐Ÿ”ด
7
Hard
Practice by Exam:Physics(16)PHYSICS(2)

About Fluid Mechanics โ€” practice questions, PYQs & concepts

Fluid Mechanics is a frequently-tested topic on Physics, PHYSICS. ExamTest.live currently lists 18 Fluid Mechanics questions spanning previous-year papers from 2026 to 2026, each with worked solutions and a step-by-step explanation. Use the filters on this page to focus on a specific exam, difficulty level or year โ€” every answer key is free, no sign-up required.

Fluid Mechanics weight in competitive exams

Across our Fluid Mechanics question bank, the largest sources are Physics (16) and PHYSICS (2). Click any exam chip above to drill down to that exam-specific question set.

How to use this page

  • Start easy: 3 easy Fluid Mechanics questions are available โ€” build fluency before moving up.
  • Target weak years: Use the year filter to focus on the most recent 2026 paper or older PYQs you have not attempted.
  • Time yourself: Every question shows the average solve time so you can benchmark your speed against other students.
  • Read every explanation: Even on questions you got right โ€” the explanation often surfaces a faster approach you can reuse.

All Fluid Mechanics Questions(1โ€“18 of 18)

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Q1mediummcqPhysicsFIITJEE AIEEE 2011 (Set Q)2026
Water is flowing continuously from a tap having an internal diameter . The water velocity as it leaves the tap is . The diameter of the water stream at a distance below the tap is close to:
Q2easymcqPhysicsNEET 20232026
The venturi-meter works on:
Q3easymcqPhysicsNEET 20222026
If a soap bubble expands, the pressure inside the bubble:
Q4mediummcqPhysicsNEET 20222026
A spherical ball is dropped in a long column of a highly viscous liquid. The curve in the graph shown, which represents the speed of the ball () as a function of time () is:
image
Q5mediummcqPhysicsNEET 20212026
The velocity of a small ball of mass and density , when dropped in a container filled with glycerine becomes constant after some time. If the density of glycerine is , then the viscous force acting on the ball will be:
Q6hardmcqPHYSICSNEET 20192026
Two small spherical metal balls, having equal masses, are made from materials of densities and such that and having radii of and , respectively. They are made to fall vertically (from rest) in a viscous medium whose coefficient of viscosity equals and whose density is . The ratio of their terminal velocities would be:
Q7mediummcqPHYSICSNEET 20192026
In a U-tube, as shown in the figure, the water and oil are in the left side and right side of the tube respectively. The height of the water and oil columns are and respectively. The density of the oil is ():
image
Q8hardmcqPhysicsPhysics
6% accuracy
A balloon is made of a material of surface tension and its inflation outlet (from where gas is filled in it) has small area . It is filled with a gas of density and takes a spherical shape of radius . When the gas is allowed to flow freely out of it, its radius changes from to (zero) in time . If the speed of gas coming out of the balloon depends on as and then:
Q9mediummcqPhysicsPhysics
6% accuracy
Consider a water tank as shown in the figure. It has one wall at and is very wide in the direction. When filled with a liquid of surface tension and density , the liquid surface makes an angle () with the -axis at . If is the height of the surface, then the equation for is:(Take and as acceleration due to gravity)

image
Q10hardmcqPhysicsPhysics
If dimensions of critical velocity of a liquid flowing through a tube are expressed as , where and are the coefficient of viscosity, density of liquid and radius of the tube respectively, then the values of and are:
Q11mediummcqPhysicsPhysics
Water rises to a height in a capillary tube. If the length of capillary tube above the surface of water is made less than , then:
Q12hardmcqPhysicsPhysics
Two non-mixing liquids of densities and are put in a container. The height of each liquid is . A solid cylinder of length and density is put in this container. The cylinder floats with its axis vertical and length in the denser liquid. The density is equal to:
Q13mediummcqPhysicsPhysics
The cylindrical tube of a spray pump has radius , one end of which has fine holes, each of radius . If the speed of the liquid in the tube is , the speed of the ejection of the liquid through the holes is:
Q14hardmcqPhysicsPhysics
A rectangular block of mass and area of cross-section floats in a liquid of density . If it is given a small vertical displacement from equilibrium, it undergoes oscillation with a time period . Then:
Q15mediummcqPhysicsPhysics
Assertion: For Reynold number , the flow of fluid is turbulent.Reason: Inertial forces are dominant compared to the viscous forces at such high Reynold numbers.
Q16easymcqPhysicsPhysics
Assertion: Specific gravity of a fluid is a dimensionless quantity.Reason: It is the ratio of density of fluid to the density of water.
Q17hardmcqPhysicsPhysics
A given shaped glass tube having uniform cross section is filled with water and is mounted on a rotatable shaft as shown in figure. If the tube is rotated with a constant angular velocity then:

image
Q18hardmcqPhysicsPhysics
The apparent depth of water in cylindrical water tank of diameter is reducing at the rate of when water is being drained out at a constant rate. The amount of water drained in per minute is (, ):

Frequently Asked Questions

How many Fluid Mechanics questions are on ExamTest.live?โ–ผ
We have 18 Fluid Mechanics questions spread across 1 pages, covering easy, medium, and hard difficulty levels with detailed explanations.
Are Fluid Mechanics MCQs free?โ–ผ
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Which exams include Fluid Mechanics questions?โ–ผ
Fluid Mechanics questions are commonly asked in Physics, PHYSICS. You can filter by exam using the links above.
How do I practice Fluid Mechanics questions effectively?โ–ผ
Start with easy questions to build confidence, then tackle medium and hard ones. Use the filter buttons to sort by difficulty. Reveal the answer only after attempting each question, and read the explanation thoroughly.