Join WhatsApp ChannelDaily MCQs & Exam Updates

PPSC MCQs

Punjab Public Service Commission — Complete MCQ Bank

1,259 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.
Start PracticingTake a Mock Test
PPSC preparation illustration
All Subjects Biology Chemistry Computer Science Current Affairs English Everyday Science General Knowledge Islamic Studies Mathematics Pakistan Studies Physics
801
Everyday Science Medium

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
Permalink
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
802
Everyday Science Easy

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

  • AVinegar
  • BBaking soda
  • CLemon juice
  • DSalt
Permalink
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
803
Everyday Science Medium

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

  • AConcave lens
  • BConvex lens
  • CBifocal lens
  • DCylindrical lens
Permalink
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
804
Everyday Science Medium

Which type of lens is used to correct myopia or nearsightedness?

  • AConvex lens
  • BConcave lens
  • CBifocal lens
  • DCylindrical lens
Permalink
Correct Answer: Option B — Concave lens
Explanation: Concave lenses are used to correct myopia or nearsightedness because they diverge light rays before they enter the eye allowing the image to focus properly on the retina.
Submitted by: PaperMCQs
805
Everyday Science Medium

Which everyday device uses the principle of capillary action to function?

  • AThermometer
  • BCandle wick
  • CBarometer
  • DMagnet
Permalink
Correct Answer: Option B — Candle wick
Explanation: A candle wick uses capillary action to draw melted wax upward toward the flame allowing continuous burning as the liquid wax is pulled through the narrow fibers of the wick.
Submitted by: PaperMCQs
806
Everyday Science Medium

Which gas law states that the volume of a gas is directly proportional to its temperature at constant pressure?

  • ABoyle's law
  • BCharles's law
  • CGay-Lussac's law
  • DAvogadro's law
Permalink
Correct Answer: Option B — Charles's law
Explanation: Charles's law states that at constant pressure the volume of a gas is directly proportional to its absolute temperature meaning gas expands when heated and contracts when cooled.
Submitted by: PaperMCQs
807
Everyday Science Medium

Which gas law states that pressure and volume of a gas are inversely proportional at constant temperature?

  • ABoyle's law
  • BCharles's law
  • CGay-Lussac's law
  • DAvogadro's law
Permalink
Correct Answer: Option A — Boyle's law
Explanation: Boyle's law states that at constant temperature the pressure of a gas is inversely proportional to its volume meaning increased pressure results in decreased volume and vice versa.
Submitted by: PaperMCQs
808
Everyday Science Medium

Which principle explains the lift generated by an aircraft wing due to differences in air pressure?

  • APascal's law
  • BBernoulli's principle
  • CArchimedes' principle
  • DBoyle's law
Permalink
Correct Answer: Option B — Bernoulli's principle
Explanation: Bernoulli's principle explains that faster moving air over an aircraft wing creates lower pressure compared to slower air beneath generating the lift needed for flight.
Submitted by: PaperMCQs
809
Everyday Science Medium

Which scientific principle explains why objects float or sink in a fluid?

  • AArchimedes' principle
  • BPascal's law
  • CBernoulli's principle
  • DNewton's law
Permalink
Correct Answer: Option A — Archimedes' principle
Explanation: Archimedes' principle states that an object submerged in a fluid experiences an upward buoyant force equal to the weight of fluid displaced determining whether it floats or sinks.
Submitted by: PaperMCQs
810
Everyday Science Medium

Which law explains the equal and opposite reaction observed when a rocket launches?

  • ANewton's first law
  • BNewton's second law
  • CNewton's third law
  • DLaw of conservation of energy
Permalink
Correct Answer: Option C — Newton's third law
Explanation: Newton's third law states that for every action there is an equal and opposite reaction explaining how a rocket is propelled forward by expelling gases backward at high speed.
Submitted by: PaperMCQs
Other Exams
CSS MCQs PMS MCQs FPSC MCQs PPSC MCQs NTS MCQs
Mock Tests
Quick Test (20 Q) Full Mock (60 Q)