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FPSC MCQs

Federal Public Service Commission — Complete MCQ Bank

1,458 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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641

Which atmospheric phenomenon causes the sky to appear reddish orange during sunrise and sunset?

  • AIncreased blue light scattering
  • BLonger path length scattering out blue light
  • CAbsorption of all colors except red
  • DReflection from clouds only
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Correct Answer: Option B — Longer path length scattering out blue light
Explanation: During sunrise and sunset sunlight travels through more atmosphere scattering out most blue light and allowing longer wavelength red and orange light to dominate the visible sky color.
Submitted by: PaperMCQs
642

Which atmospheric phenomenon causes the sky to appear blue during the day?

  • AReflection of ocean water
  • BScattering of sunlight by atmospheric particles
  • CAbsorption of red light by clouds
  • DRefraction through ice crystals
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Correct Answer: Option B — Scattering of sunlight by atmospheric particles
Explanation: The sky appears blue because shorter blue wavelengths of sunlight are scattered more strongly by atmospheric gas molecules compared to longer wavelengths like red through Rayleigh scattering.
Submitted by: PaperMCQs
643

Which type of precipitation forms as layered ice balls created by strong updrafts within thunderstorms?

  • ASnow
  • BSleet
  • CHail
  • DFrost
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Correct Answer: Option C — Hail
Explanation: Hail forms as layered ice balls created by strong updrafts within thunderstorms that carry water droplets repeatedly through freezing layers of the atmosphere before falling to the ground.
Submitted by: PaperMCQs
644

Which type of precipitation forms when raindrops freeze before reaching the ground in cold conditions?

  • ASnow
  • BSleet
  • CHail
  • DDrizzle
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Correct Answer: Option B — Sleet
Explanation: Sleet forms when raindrops freeze into ice pellets before reaching the ground typically occurring when a layer of freezing air exists near the surface during winter storms.
Submitted by: PaperMCQs
645

Which natural process explains the formation of clouds in the atmosphere?

  • ASublimation of ice
  • BCondensation of water vapor
  • CEvaporation of seawater only
  • DPrecipitation
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Correct Answer: Option B — Condensation of water vapor
Explanation: Clouds form when water vapor in the atmosphere cools and condenses around tiny particles forming visible droplets or ice crystals that collectively appear as clouds.
Submitted by: PaperMCQs
646

Which everyday phenomenon explains why a metal spoon feels colder than a wooden spoon at the same room temperature?

  • AMetal has higher specific heat
  • BMetal conducts heat away from skin faster
  • CWood absorbs more light
  • DMetal reflects more heat
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Correct Answer: Option B — Metal conducts heat away from skin faster
Explanation: Metal conducts heat away from the skin much faster than wood due to its higher thermal conductivity making it feel colder even though both objects are at the same room temperature.
Submitted by: PaperMCQs
647

Which modern lighting technology is significantly more energy efficient than traditional incandescent bulbs?

  • AHalogen bulbs
  • BLED bulbs
  • CFluorescent tubes only
  • DCandle light
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Correct Answer: Option B — LED bulbs
Explanation: LED bulbs are significantly more energy efficient than traditional incandescent bulbs because they convert a much higher percentage of electrical energy into light rather than heat.
Submitted by: PaperMCQs
648

Which device converts electrical energy into light energy using a glowing filament?

  • ASolar panel
  • BIncandescent bulb
  • CBattery
  • DGenerator
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Correct Answer: Option B — Incandescent bulb
Explanation: An incandescent bulb converts electrical energy into light energy by heating a thin filament until it glows though much of the energy is lost as heat rather than light.
Submitted by: PaperMCQs
649

Which everyday application demonstrates the use of static electricity?

  • AA balloon sticking to a wall after rubbing
  • BWater flowing downhill
  • CA ball rolling on a flat surface
  • DIce melting in sunlight
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Correct Answer: Option A — A balloon sticking to a wall after rubbing
Explanation: Rubbing a balloon against hair or fabric transfers electrons creating a static charge that allows the balloon to stick to a wall by attracting opposite charges on its surface.
Submitted by: PaperMCQs
650

Which everyday observation illustrates the concept of friction reducing motion efficiency?

  • AA ball bouncing higher each time
  • BRubbing hands together to generate heat
  • CWater boiling faster at high altitude
  • DLight bending through a prism
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Correct Answer: Option B — Rubbing hands together to generate heat
Explanation: Rubbing hands together to generate heat illustrates friction as the resistance between surfaces in contact converts kinetic energy into thermal energy producing warmth.
Submitted by: PaperMCQs