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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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61

Which human body system is primarily responsible for fighting infections and diseases?

  • ADigestive system
  • BImmune system
  • CSkeletal system
  • DExcretory system
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Correct Answer: Option B — Immune system
Explanation: The immune system is the body's primary defense against infections and diseases using white blood cells antibodies and lymph nodes to detect and destroy pathogens.
Submitted by: PaperMCQs
62

Which planet in the solar system rotates on its side with an axial tilt of about 98 degrees?

  • AUranus
  • BNeptune
  • CSaturn
  • DJupiter
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Correct Answer: Option A — Uranus
Explanation: Uranus has an extreme axial tilt of about 98 degrees meaning it essentially rotates on its side likely caused by a massive collision during the early solar system.
Submitted by: PaperMCQs
63

Which everyday process explains how noise-cancelling headphones work?

  • AReflecting sound waves outward
  • BAbsorbing sound with foam only
  • CIncreasing inner air pressure
  • DGenerating sound waves that cancel incoming noise
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Correct Answer: Option D — Generating sound waves that cancel incoming noise
Explanation: Noise-cancelling headphones use microphones to detect ambient sound and generate opposing sound waves that cancel out the incoming noise through destructive interference.
Submitted by: PaperMCQs
64

Which type of radiation has the greatest penetrating power among alpha beta and gamma radiation?

  • AGamma
  • BAlpha
  • CBeta
  • DAll equal
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Correct Answer: Option A — Gamma
Explanation: Gamma radiation has the greatest penetrating power and can pass through dense materials like lead only being significantly blocked by thick lead or concrete shielding.
Submitted by: PaperMCQs
65

Which chemical element has the highest melting point of all pure metals, used in light bulb filaments?

  • AIron
  • BTungsten
  • CPlatinum
  • DTitanium
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Correct Answer: Option B — Tungsten
Explanation: Tungsten has the highest melting point of all pure metals at about 3422 degrees Celsius making it ideal for light bulb filaments that must withstand intense heat without melting.
Submitted by: PaperMCQs
66

Which part of the nervous system is called the automatic system and controls involuntary body functions like digestion?

  • ASomatic nervous system
  • BCentral nervous system
  • CAutonomic nervous system
  • DPeripheral nervous system
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Correct Answer: Option C — Autonomic nervous system
Explanation: The autonomic nervous system regulates involuntary functions like digestion heartbeat and breathing without conscious effort and is divided into sympathetic and parasympathetic divisions.
Submitted by: PaperMCQs
67

Which gas makes up approximately 0.04 percent of Earth's atmosphere and is essential for plant photosynthesis?

  • AOxygen
  • BCarbon dioxide
  • CNitrogen
  • DArgon
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Correct Answer: Option B — Carbon dioxide
Explanation: Carbon dioxide makes up about 0.04 percent of Earth's atmosphere and despite its small concentration it is essential for photosynthesis and plays a major role in climate regulation.
Submitted by: PaperMCQs
68

Which scale measures the hardness of minerals, with diamond being the hardest at 10?

  • ARichter scale
  • BMohs scale
  • CBeaufort scale
  • DKelvin scale
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Correct Answer: Option B — Mohs scale
Explanation: The Mohs hardness scale ranks minerals from 1 to 10 based on their ability to scratch each other with diamond rated at 10 as the hardest naturally occurring mineral.
Submitted by: PaperMCQs
69

Which common household item works based on the principle of Pascal's law?

  • AKnife
  • BThermometer
  • CHydraulic jack
  • DBarometer
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Correct Answer: Option C — Hydraulic jack
Explanation: A hydraulic jack uses Pascal's law where pressure applied to a confined fluid is transmitted equally in all directions allowing a small force to lift heavy loads.
Submitted by: PaperMCQs
70

Which gas is released when metals like zinc react with dilute hydrochloric acid?

  • AOxygen
  • BCarbon dioxide
  • CHydrogen
  • DNitrogen
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Correct Answer: Option C — Hydrogen
Explanation: When zinc reacts with dilute hydrochloric acid hydrogen gas is produced along with zinc chloride and this reaction is a standard laboratory method to generate hydrogen.
Submitted by: PaperMCQs