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FPSC MCQs

Federal Public Service Commission — Complete MCQ Bank

269 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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231

Which preservation technique uses controlled heating to kill harmful microorganisms in liquids like milk?

  • ADehydration
  • BPasteurization
  • CFermentation
  • DCanning
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Correct Answer: Option B — Pasteurization
Explanation: Pasteurization involves heating liquids like milk to a specific temperature for a set time to kill harmful microorganisms while preserving nutritional quality and extending shelf life.
Submitted by: PaperMCQs
232

Which common food preservation method works by removing moisture to inhibit bacterial growth?

  • ARefrigeration
  • BDehydration
  • CPasteurization
  • DFreezing
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Correct Answer: Option B — Dehydration
Explanation: Dehydration preserves food by removing moisture content which inhibits the growth of bacteria fungi and other microorganisms that require water to survive and multiply.
Submitted by: PaperMCQs
233

Which instrument is used to detect and measure the magnitude of earthquakes?

  • ABarometer
  • BSeismograph
  • CAnemometer
  • DHygrometer
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Correct Answer: Option B — Seismograph
Explanation: A seismograph detects and records ground vibrations allowing scientists to measure the magnitude and epicenter of earthquakes for disaster monitoring and early warning systems.
Submitted by: PaperMCQs
234

Which instrument is used to measure wind speed?

  • ABarometer
  • BHygrometer
  • CAnemometer
  • DSeismograph
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Correct Answer: Option C — Anemometer
Explanation: An anemometer measures wind speed and is commonly used at weather stations and airports to monitor atmospheric conditions important for aviation and meteorological forecasting.
Submitted by: PaperMCQs
235

Which instrument is used to measure humidity levels in the atmosphere?

  • ABarometer
  • BHygrometer
  • CAnemometer
  • DThermometer
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Correct Answer: Option B — Hygrometer
Explanation: A hygrometer is the instrument used to measure humidity levels in the atmosphere providing important data for weather forecasting agriculture and indoor climate control.
Submitted by: PaperMCQs
236

Which device measures atmospheric pressure and is commonly used for weather forecasting?

  • AThermometer
  • BBarometer
  • CHygrometer
  • DAnemometer
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Correct Answer: Option B — Barometer
Explanation: A barometer measures atmospheric pressure and is widely used in weather forecasting since pressure changes often indicate approaching weather systems such as storms or clear skies.
Submitted by: PaperMCQs
237

Which type of wave does light represent in terms of its propagation?

  • ALongitudinal wave
  • BTransverse wave
  • CMechanical wave
  • DStanding wave
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Correct Answer: Option B — Transverse wave
Explanation: Light is a transverse electromagnetic wave in which oscillations occur perpendicular to the direction of wave travel distinguishing it from longitudinal sound waves.
Submitted by: PaperMCQs
238

Which everyday process best illustrates the conversion of chemical energy into mechanical energy?

  • ABurning fuel in a car engine
  • BBoiling water
  • CSolar panel charging a phone
  • DPhotosynthesis
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Correct Answer: Option A — Burning fuel in a car engine
Explanation: Burning fuel in a car engine illustrates the conversion of chemical energy stored in fuel into mechanical energy that powers the vehicle's movement through controlled combustion.
Submitted by: PaperMCQs
239

Which common kitchen substance is used as a natural antacid due to its alkaline properties?

  • AVinegar
  • BBaking soda
  • CLemon juice
  • DSalt
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Correct Answer: Option B — Baking soda
Explanation: Baking soda sodium bicarbonate is commonly used as a natural antacid because its alkaline properties help neutralize excess stomach acid relieving symptoms of indigestion and heartburn.
Submitted by: PaperMCQs
240

Which type of lens is used to correct hyperopia or farsightedness?

  • AConcave lens
  • BConvex lens
  • CBifocal lens
  • DCylindrical lens
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Correct Answer: Option B — Convex lens
Explanation: Convex lenses are used to correct hyperopia or farsightedness because they converge light rays helping the eye focus images properly onto the retina for clearer near vision.
Submitted by: PaperMCQs