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PPSC MCQs

Punjab Public Service Commission β€” Complete MCQ Bank

1,262 Questions
Exam Preparation Guide

How to prepare for PPSC

PPSC examinations recruit candidates for Punjab government departments and commonly test general knowledge, current affairs, English and post-related subjects.

Punjab AffairsGeneral KnowledgeCurrent AffairsEnglish
Give special attention to Punjab geography, history and administration alongside the advertised post’s specialist syllabus.
PPSC preparation illustration
581

Which gas is used to fill incandescent light bulb to prevent the filament from burning?

  • AOxygen
  • BCarbon dioxide
  • CArgon or nitrogen
  • DHelium
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Correct Answer: Option C β€” Argon or nitrogen
Explanation: Incandescent bulbs are filled with argon or nitrogen to prevent the tungsten filament from oxidising and burning out quickly extending the bulb's lifespan.
Submitted by: PaperMCQs
582

Which phenomenon causes a needle to deflect when placed near a current-carrying wire?

  • AMagnetism
  • BGravity
  • CStatic electricity
  • DSound waves
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Correct Answer: Option A β€” Magnetism
Explanation: A current-carrying wire produces a magnetic field around it which deflects a nearby compass needle demonstrating the link between electricity and magnetism.
Submitted by: PaperMCQs
583

Which everyday material is used as an X-ray absorber to protect the body during medical scans?

  • ACopper
  • BLead
  • CAluminium
  • DSteel
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Correct Answer: Option B β€” Lead
Explanation: Lead is used as a shield during X-ray procedures because it effectively absorbs harmful ionising radiation protecting body parts not being examined.
Submitted by: PaperMCQs
584

Which sense organ contains the olfactory receptors responsible for detecting smells?

  • AEars
  • BEyes
  • CNose
  • DTongue
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Correct Answer: Option C β€” Nose
Explanation: The nose contains olfactory receptors located in the nasal cavity that detect chemical molecules in the air and transmit smell information to the brain.
Submitted by: PaperMCQs
585

Which common substance has the chemical formula H2O2?

  • AWater
  • BAcetic acid
  • CHydrogen peroxide
  • DAmmonia
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Correct Answer: Option C β€” Hydrogen peroxide
Explanation: Hydrogen peroxide H2O2 is a common antiseptic used to clean wounds and is also used as a bleaching agent and differs from water by having an extra oxygen atom.
Submitted by: PaperMCQs
586

Which layer of the skin provides insulation and stores energy as fat?

  • AMelanocyte layer
  • BEpidermis
  • CDermis
  • DHypodermis
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Correct Answer: Option A β€” Melanocyte layer
Explanation: The hypodermis also called subcutaneous tissue is the deepest skin layer that stores fat for insulation energy reserve and cushioning against physical impact.
Submitted by: PaperMCQs
587

Which everyday process converts mechanical energy into electrical energy in a bicycle dynamo?

  • ARadiation
  • BConduction
  • CElectromagnetic induction
  • DChemical reaction
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Correct Answer: Option C β€” Electromagnetic induction
Explanation: A bicycle dynamo converts mechanical energy from wheel rotation into electrical energy through electromagnetic induction as a coil rotates within a magnetic field.
Submitted by: PaperMCQs
588

Which organ produces the hormone adrenaline that prepares the body for fight or flight response?

  • AThyroid gland
  • BPituitary gland
  • CPancreas
  • DAdrenal gland
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Correct Answer: Option D β€” Adrenal gland
Explanation: The adrenal glands located above the kidneys produce adrenaline which triggers the fight or flight response by increasing heart rate and blood flow to muscles.
Submitted by: PaperMCQs
589

Which planet is the largest in our solar system?

  • AJupiter
  • BMars
  • CSaturn
  • DNeptune
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Correct Answer: Option A β€” Jupiter
Explanation: Jupiter is the largest planet in the solar system with a mass greater than all other planets combined and is known for its Great Red Spot storm.
Submitted by: PaperMCQs
590
English Medium

Choose the correct preposition to complete the sentence: "The master was annoyed _____ the servant."

  • AWith
  • BFor
  • COn
  • DAt
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Correct Answer: Option A β€” With
Explanation: The adjective "annoyed" is commonly followed by the preposition "with" when referring to a person who causes irritation. Therefore, the correct sentence is "The master was annoyed with the servant." This means that the master felt displeased or irritated because of the servant's behavior or actions.
Submitted by: Chandi