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Pressure and Fluids – GK Quiz with Answers – Level 3

Harder physics GK questions on thrust and pressure, Archimedes' principle, relative density, atmospheric pressure on a rubber sucker, and contact versus non-contact forces.

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Choose Normal practice or a Simulated test.

Questions, answer key and solutions.

Questions
50
Duration
35 min
Marks
50

Negative marking

Attempts
100
Access
Free
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Normal practice, or a Simulated test

Both use the same questions. Normal practice is untimed and needs no account: choose an option and the answer and solution appear at once. The Simulated test is the real computer-based format, with one 35-minute clock, a question palette and full screen, and your score, the key and the solutions arrive when you submit.

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How the two modes differ
No account needed

Normal

Untimed

Every question on one page, loading as you scroll. Choose an option and see straight away whether it was right.

  • No timer. Nothing to start and nothing to submit. Stop whenever you like.
  • Answered as you choose. Tap an option and it is marked at once, with the correct answer shown.
  • Solutions in place. The explanation, and the video where one has been added, sit under the question.
  • Open to guests. Normal practice needs no sign-in.
Real exam conditions

Simulated

Timed CBT

The computer-based test format: one clock, a question palette, and a score the moment you submit.

  • A clock that does not pause. 35 minutes from the moment you begin, and the paper is submitted for you when it reaches zero.
  • Question palette. Answered, not answered and marked for review, section by section, as the real interface has it.
  • Full screen, proctored. The test takes over the screen; leaving it three times submits the paper.
  • Answers hidden until you submit. The key, the explanations and your score all arrive together at the end.

About this test

Pressure and Fluids GK Quiz Level 3: Thrust, Buoyancy and Density MCQs

Pressure and Fluids GK Quiz Level 3 on Aptitude360 is a harder physics set on thrust, pressure, liquid and atmospheric pressure, Archimedes' principle, density and relative density. It uses statement-based, matching and sequencing questions, and every question comes with a written explanation.

Topics covered in this Pressure and Fluids Level 3 set

  • Thrust as a perpendicular force and pressure as thrust per unit area
  • Area and pressure in everyday cases such as sharp knives, wide truck tyres and a camel's flat feet
  • Liquid pressure on the walls and base of a container, and equal pressure in all directions at the same depth
  • Atmospheric pressure and how a rubber sucker grips a smooth wall
  • Archimedes' principle, upthrust, floating and sinking, and the lactometer and hydrometer
  • Density, relative density, SI units, and contact versus non-contact forces

Key fluid pressure concepts to revise

  • The same thrust on a smaller area produces more pressure
  • Upthrust equals the weight of the fluid displaced, whether the body is fully or partly immersed
  • An object floats in a liquid denser than itself and sinks in a less dense liquid
  • Relative density has no unit, and the pascal is the SI unit of pressure

Revision tips for pressure and buoyancy questions

  • Read each statement for swapped definitions, such as density written as volume per unit mass
  • For upthrust problems, compare the weight of the body with the weight of fluid it displaces
  • Link each everyday example to its principle: knife and camel to pressure, sucker to air pressure, lactometer to buoyancy

Who should take this Level 3 quiz

It suits general awareness aspirants who have finished the earlier levels and want tougher statement and matching practice on fluids.

FAQs about Pressure and Fluids – GK Quiz with Answers – Level 3

What is pressure of a fluid?
Fluid pressure is the thrust a liquid or gas exerts per unit area of a surface it touches. A liquid presses on both the base and the walls of its container.
What is the formula for pressure in physics?
Pressure equals thrust divided by the area on which it acts. Its SI unit is the pascal, which is one newton per square metre.
Does a liquid exert equal pressure in all directions?
Yes. At the same depth, a liquid at rest exerts equal pressure in all directions, and this pressure increases with depth.
What does Archimedes' principle state?
A body wholly or partly immersed in a fluid experiences an upward force equal to the weight of the fluid it displaces. Ships, submarines, lactometers and hydrometers work on this principle.

Test structure

How the paper is split, and how long each part runs. A section you have finished cannot be returned to.

SectionQuestionsTime
Pressure and Fluids GK Level 35035 min

Marking & rules

Total marks
50 across 50 questions.
Negative marking
A wrong answer costs marks. Leaving a question unanswered costs nothing.
Attempts
100 in total. An attempt is spent the moment you begin one.

What you get when you submit

The analysis is ready the moment you submit the paper.

Score and accuracy

Marks, percentage, right, wrong and skipped, and the time you took.

Section by section

The same figures for each section, so a weak one cannot hide in an average.

The full answer key

Every question with your answer, the right one, the working, and the video where there is one.

Where you stand

Your score against the spread of everyone else who has sat this test.

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