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FPSC MCQs

Federal Public Service Commission — Complete MCQ Bank

1,461 Questions
Exam Preparation Guide

How to prepare for FPSC

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

General KnowledgeCurrent AffairsEnglishJob-related Subjects
Read the official syllabus first, then combine subject-specific revision with timed mixed-question practice.
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511

Which part of the plant conducts photosynthesis and contains stomata for gas exchange?

  • ARoot
  • BStem
  • CFlower
  • DLeaf
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Correct Answer: Option D — Leaf
Explanation: Leaves are the primary site of photosynthesis containing chlorophyll and stomata which allow carbon dioxide in and oxygen and water vapour out during gas exchange.
Submitted by: PaperMCQs
512

Which everyday principle explains how blood pressure monitors measure pressure in the arteries?

  • APascal's law
  • BBernoulli's principle
  • CArchimedes' principle
  • DHooke's law
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Correct Answer: Option A — Pascal's law
Explanation: Blood pressure monitors use Pascal's principle where pressure applied to a cuff around the arm transmits through the fluid to measure the pressure in the arterial blood flow.
Submitted by: PaperMCQs
513

Which everyday item uses a bimetallic strip that bends when heated to control temperature in older thermostats?

  • AThermostat
  • BCompass
  • CHygrometer
  • DBarometer
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Correct Answer: Option A — Thermostat
Explanation: Older thermostats use a bimetallic strip that bends when heated because two bonded metals expand at different rates triggering a circuit to switch heating or cooling on and off.
Submitted by: PaperMCQs
514

Which part of the water cycle involves water falling from clouds back to the Earth's surface as rain snow or hail?

  • AEvaporation
  • BPrecipitation
  • CCondensation
  • DTranspiration
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Correct Answer: Option B — Precipitation
Explanation: Precipitation is the stage of the water cycle where water falls from clouds back to the Earth's surface in various forms including rain snow sleet and hail.
Submitted by: PaperMCQs
515

Which part of the water cycle involves water vapour cooling and turning back into liquid water droplets to form clouds?

  • AEvaporation
  • BCondensation
  • CPrecipitation
  • DTranspiration
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Correct Answer: Option B — Condensation
Explanation: Condensation is the part of the water cycle where water vapour cools as it rises and turns back into tiny liquid droplets forming clouds and fog in the atmosphere.
Submitted by: PaperMCQs
516

Which process in the water cycle involves the sun's energy turning liquid water into water vapour?

  • ACondensation
  • BPrecipitation
  • CEvaporation
  • DInfiltration
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Correct Answer: Option C — Evaporation
Explanation: Evaporation is the process in the water cycle where solar energy heats water in oceans lakes and rivers turning liquid water into water vapour that rises into the atmosphere.
Submitted by: PaperMCQs
517

Which everyday phenomenon explains why a ship made of steel can float despite steel being denser than water?

  • AThe ship displaces a volume of water equal to its weight
  • BSteel is lighter than water
  • CSteel reacts with seawater to reduce density
  • DShips contain compressed air making them float
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Correct Answer: Option A — The ship displaces a volume of water equal to its weight
Explanation: A steel ship floats because its hollow shape displaces a large volume of water whose weight equals the ship's weight satisfying Archimedes' principle even though steel itself sinks.
Submitted by: PaperMCQs
518

Which type of wave requires a material medium to travel and cannot propagate through vacuum?

  • AElectromagnetic wave
  • BLight wave
  • CSound wave
  • DRadio wave
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Correct Answer: Option C — Sound wave
Explanation: Sound is a mechanical wave that requires a material medium such as air water or solid to propagate and cannot travel through a vacuum unlike electromagnetic waves.
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519

Which gas is produced during electrolysis of water at the negative electrode called the cathode?

  • AOxygen
  • BNitrogen
  • CHydrogen
  • DCarbon dioxide
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Correct Answer: Option C — Hydrogen
Explanation: During electrolysis of water hydrogen gas is produced at the negative electrode cathode at twice the volume of oxygen produced at the anode due to water's H2O composition.
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520

Which gas is produced during the electrolysis of water at the positive electrode called the anode?

  • AHydrogen
  • BNitrogen
  • COxygen
  • DCarbon dioxide
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Correct Answer: Option C — Oxygen
Explanation: During electrolysis of water oxygen gas is produced at the positive electrode anode while hydrogen gas is produced at the negative electrode cathode in a 1:2 ratio.
Submitted by: PaperMCQs