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FPSC MCQs

Federal Public Service Commission — Complete MCQ Bank

1,461 Questions
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FPSC recruitment tests assess subject knowledge, general ability and job-related competence for federal government positions across Pakistan.

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291
Chemistry Easy

Which scientist is known as the Father of Modern Chemistry?

  • AIsaac Newton
  • BRobert Boyle
  • CJohn Dalton
  • DAntoine Lavoisier
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Correct Answer: Option D — Antoine Lavoisier
Explanation: Antoine Lavoisier is known as the Father of Modern Chemistry for establishing the law of conservation of mass and developing a systematic chemical nomenclature.
Submitted by: PaperMCQs
292
Physics Medium

Which instrument is used to detect and measure very small electric currents?

  • AVoltmeter
  • BOhmmeter
  • CAmmeter
  • DGalvanometer
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Correct Answer: Option D — Galvanometer
Explanation: A galvanometer is a sensitive instrument used to detect and measure very small electric currents through the deflection of a needle in a magnetic field.
Submitted by: PaperMCQs
293
Physics Medium

What is the function of an optical fibre?

  • ATo store electrical energy
  • BTo transmit light signals over long distances using total internal reflection
  • CTo measure temperature
  • DTo amplify sound waves
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Correct Answer: Option B — To transmit light signals over long distances using total internal reflection
Explanation: Optical fibres transmit light signals over long distances using total internal reflection within a glass or plastic fibre and are the backbone of modern high-speed internet communications.
Submitted by: PaperMCQs
294
Physics Hard

Which fundamental force is responsible for radioactive beta decay?

  • AGravitational force
  • BElectromagnetic force
  • CStrong nuclear force
  • DWeak nuclear force
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Correct Answer: Option D — Weak nuclear force
Explanation: The weak nuclear force is responsible for radioactive beta decay where a neutron transforms into a proton by emitting an electron and an antineutrino.
Submitted by: PaperMCQs
295
Physics Hard

What is the name of the force that holds protons and neutrons together inside the nucleus?

  • AElectromagnetic force
  • BGravitational force
  • CStrong nuclear force
  • DWeak nuclear force
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Correct Answer: Option C — Strong nuclear force
Explanation: The strong nuclear force holds protons and neutrons together inside the atomic nucleus and is the strongest of the four fundamental forces operating only at very short ranges.
Submitted by: PaperMCQs
296
Physics Hard

Which law states that a planet sweeps out equal areas in equal times as it orbits the sun?

  • AKepler's First Law
  • BNewton's Second Law
  • CKepler's Second Law
  • DKepler's Third Law
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Correct Answer: Option C — Kepler's Second Law
Explanation: Kepler's Second Law states that a line joining a planet to the sun sweeps equal areas in equal time intervals meaning planets move faster when closer to the sun.
Submitted by: PaperMCQs
297
Physics Medium

Which law states that planets move in elliptical orbits with the sun at one focus?

  • ANewton's Law of Gravitation
  • BGalileo's Law of Motion
  • CKepler's First Law
  • DHubble's Law
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Correct Answer: Option C — Kepler's First Law
Explanation: Kepler's First Law of Planetary Motion states that all planets orbit the sun in elliptical paths with the sun located at one of the two foci of the ellipse.
Submitted by: PaperMCQs
298
Physics Medium

What is the centripetal force?

  • AForce pushing an object outward in circular motion
  • BForce causing linear acceleration
  • CForce equal to mass times velocity
  • DForce directed toward the centre of circular motion
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Correct Answer: Option D — Force directed toward the centre of circular motion
Explanation: Centripetal force is the force directed toward the centre of circular motion that keeps an object moving in a curved path and is provided by tension gravity or friction depending on the situation.
Submitted by: PaperMCQs
299
Physics Hard

Which principle states that no two electrons in an atom can have the same set of four quantum numbers?

  • AHeisenberg Uncertainty Principle
  • BSuperposition Principle
  • CAufbau Principle
  • DPauli Exclusion Principle
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Correct Answer: Option D — Pauli Exclusion Principle
Explanation: The Pauli Exclusion Principle states that no two electrons in an atom can have identical sets of all four quantum numbers meaning each orbital can hold at most two electrons with opposite spins.
Submitted by: PaperMCQs
300
Physics Medium

What is the terminal velocity of a falling object?

  • AMinimum speed during fall
  • BSpeed at which object first starts moving
  • CSpeed independent of mass
  • DMaximum speed reached when weight equals air resistance
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Correct Answer: Option D — Maximum speed reached when weight equals air resistance
Explanation: Terminal velocity is the constant maximum speed reached by a falling object when the downward gravitational force equals the upward air resistance force resulting in zero net force.
Submitted by: PaperMCQs
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