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PPSC MCQs

Punjab Public Service Commission β€” Complete MCQ Bank

273 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
11

Which type of diet is most commonly recommended for preventing cardiovascular disease due to its emphasis on healthy fats?

  • AHigh fat diet
  • BCarnivore diet
  • CHigh sugar diet
  • DMediterranean diet
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Correct Answer: Option D β€” Mediterranean diet
Explanation: The Mediterranean diet emphasising fruits vegetables whole grains legumes and healthy fats from olive oil and fish is widely recommended for reducing cardiovascular disease risk.
Submitted by: PaperMCQs
12

Which common property of water describes water molecules being attracted to each other through hydrogen bonds?

  • AAdhesion
  • BSurface tension
  • CViscosity
  • DCohesion
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Correct Answer: Option D β€” Cohesion
Explanation: Cohesion describes the attraction of water molecules to each other through hydrogen bonds and is one reason water forms droplets and has relatively high surface tension.
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13

Which common property of water is described as the tendency of water molecules to stick to other surfaces?

  • ACohesion
  • BSurface tension
  • CAdhesion
  • DViscosity
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Correct Answer: Option C β€” Adhesion
Explanation: Adhesion is the property that describes water molecules sticking to other surfaces such as glass or plant cell walls and is responsible for capillary action in plants.
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14

Which everyday device measures body temperature by detecting the infrared radiation emitted from the ear canal or forehead?

  • ATraditional glass thermometer
  • BInfrared thermometer
  • CAlcohol thermometer
  • DBimetallic thermometer
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Correct Answer: Option B β€” Infrared thermometer
Explanation: Infrared thermometers detect infrared radiation emitted from the ear canal or forehead and convert it into a temperature reading without making direct contact with the skin.
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15

Which substance in a catalytic converter helps reduce harmful vehicle exhaust emissions?

  • AIron
  • BPlatinum and palladium
  • CCopper
  • DAluminium
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Correct Answer: Option B β€” Platinum and palladium
Explanation: Catalytic converters use platinum and palladium as catalysts to convert harmful exhaust gases like carbon monoxide nitrogen oxides and unburnt hydrocarbons into less harmful substances.
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16

Which renewable energy source harnesses heat stored inside the Earth to generate electricity?

  • ASolar
  • BWind
  • CTidal
  • DGeothermal
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Correct Answer: Option D β€” Geothermal
Explanation: Geothermal energy harnesses heat from within the Earth using steam or hot water from underground reservoirs to drive turbines and generate electricity with minimal environmental impact.
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17

Which common process happens when iron is exposed to oxygen and moisture over time forming a reddish-brown coating?

  • ASublimation
  • BReduction
  • CNeutralisation
  • DOxidation forming iron oxide rust
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Correct Answer: Option D β€” Oxidation forming iron oxide rust
Explanation: Rusting is an oxidation process where iron reacts with oxygen and water to form iron oxide a reddish-brown substance that weakens and corrodes iron structures over time.
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18

Which type of teeth are flat and chisel-shaped primarily used for cutting and biting food?

  • ACanines
  • BMolars
  • CPremolars
  • DIncisors
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Correct Answer: Option D β€” Incisors
Explanation: Incisors are the eight flat chisel-shaped front teeth four in each jaw used primarily for cutting and biting into food during eating.
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19

Which everyday observation shows that white light is composed of multiple colours?

  • AOil floating on water showing colour bands
  • BA prism separating white light into a spectrum
  • CSunlight reflected off water
  • DA glass of water looking clear
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Correct Answer: Option B β€” A prism separating white light into a spectrum
Explanation: Passing white light through a glass prism causes dispersion splitting it into a visible spectrum of colours from red to violet demonstrating that white light contains multiple wavelengths.
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20

Which common kitchen appliance uses the principle of electromagnetic induction specifically to heat food through magnetic coupling?

  • AInduction cooker
  • BMicrowave oven
  • CConventional oven
  • DElectric kettle
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Correct Answer: Option A β€” Induction cooker
Explanation: An induction cooker uses electromagnetic induction to generate electric currents directly in ferromagnetic cookware producing heat through electrical resistance within the pot or pan itself.
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