HomeTestsSearchRankProfile

Fluid Mechanics Questions

Practice 38 Fluid Mechanics questions with detailed answers and explanations. Free MCQs, PYQs, and mock test questions for NEET, JEE, GATE, SSC and more.

📚
38
Total Questions
🟢
3
Easy
🟡
28
Medium
🔴
7
Hard
Practice by Exam:Physics(25)General Science(7)General Studies(3)PHYSICS(2)Science(1)

About Fluid Mechanics — practice questions, PYQs & concepts

Fluid Mechanics is a frequently-tested topic on Physics, General Science, General Studies. ExamTest.live currently lists 38 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 — 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 (25), General Science (7), General Studies (3), PHYSICS (2) and Science (1). 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 — 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 — the explanation often surfaces a faster approach you can reuse.

All Fluid Mechanics Questions(1–38 of 38)

Filter:
Q1mediummcqGeneral ScienceCompetitive Exam2026
0% accuracy
A body is floating in a liquid partly immersed. The body and the liquid are taken to the moon. The body
Q2mediummcqGeneral ScienceSSC CGL2026
0% accuracy
In a streamline flow, _________ at every point in the fluid remains same.
Q3mediummcqPhysicsWBCS Prelims2026
0% accuracy
Water rises up a capillary tube because of
Q4mediummcqGeneral StudiesCompetitive Exam2026
100% accuracy
Hydraulic press is based on
Q5mediummcqPhysicsSSC CGL2026
0% accuracy
Upward force on a floating body is called __________.
Q6mediummcqPhysicsCompetitive Exam2026
0% accuracy
When ice floats on water, its ______ part remains outside the water.
Q7mediummcqPhysicsFIITJEE 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:
Q8mediummcqGeneral StudiesCompetitive Exams2026
Water rises up a capillary tube because of:
Q9mediummcqPhysicsGeneral Aptitude Test2026
The submerged portion of a piece of pure ice floating in water is approximately:
Q10mediummcqGeneral StudiesCompetitive Exams2026
A body is floating in a liquid partly immersed. If the body and the liquid are taken to the Moon, the body will:
Q11mediummcqPhysicsCompetitive Exam2026
The surface tension of liquid:
Q12mediummcqGeneral ScienceCompetitive Exams2026
Pascal is a unit of:
Q13mediummcqScienceSSC CGL2026
What is the viscosity of an ideal fluid?
Q14mediummcqGeneral ScienceCompetitive Exam2026
Two cars, passing each other at high speed, are in danger of sideswiping because
Q15mediummcqGeneral ScienceWBCS Prelims2026
The absorption of ink by blotting paper involves
Q16mediummcqPhysicsCompetitive Exam2026
The surface tension of liquid
Q17mediummcqPhysicsSSC CGL2026
What is the name of the device for measuring some characteristics of a liquid, such as its density or specific gravity?
Q18easymcqPhysicsNEET 20232026
The venturi-meter works on:
Q19mediummcqPhysicsNEET 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
Q20easymcqPhysicsNEET 20222026
If a soap bubble expands, the pressure inside the bubble:
Q21mediummcqPhysicsNEET 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:
Q22hardmcqPHYSICSNEET 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:
Q23mediummcqPHYSICSNEET 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
Q24mediummcqPhysicsCompetitive Exam Practice Paper2026
A boat floating in a tank is carrying some passengers. If the passengers drink water from the tank, how will it affect the water level of the tank?
Q25mediummcqPhysicsWBCS Prelims 20212026
The waves produced by motor boat sailing on water are
Q26mediummcqGeneral ScienceWBCS Prelims 20172026
A shaving brush is dipped in water. When taken out, the hairs of the brush are seen to be drawn together due to:
Q27mediummcqGeneral ScienceWBCS Prelims 20172026
The immersed portion of a piece of pure ice floating in water is:
Q28hardmcqPhysicsPhysics
5% 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:
Q29mediummcqPhysicsPhysics
5% 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
Q30easymcqPhysicsPhysics
Assertion: Specific gravity of a fluid is a dimensionless quantity.Reason: It is the ratio of density of fluid to the density of water.
Q31mediummcqPhysicsPhysics
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.
Q32hardmcqPhysicsPhysics
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:
Q33hardmcqPhysicsPhysics
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
Q34mediummcqPhysicsPhysics
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:
Q35hardmcqPhysicsPhysics
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 (, ):
Q36hardmcqPhysicsPhysics
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:
Q37mediummcqPhysicsPhysics
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:
Q38hardmcqPhysicsPhysics
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:

Frequently Asked Questions

How many Fluid Mechanics questions are on ExamTest.live?▼
We have 38 Fluid Mechanics questions spread across 1 pages, covering easy, medium, and hard difficulty levels with detailed explanations.
Are Fluid Mechanics MCQs free?▼
Yes. All Fluid Mechanics questions, answers, and explanations on ExamTest.live are completely free. No account or subscription required.
Which exams include Fluid Mechanics questions?▼
Fluid Mechanics questions are commonly asked in Physics, General Science, General Studies, PHYSICS, Science. You can filter by exam using the links above.
How do I practice Fluid Mechanics questions effectively?▼
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.