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PPSC MCQs

Punjab Public Service Commission — Complete MCQ Bank

2,026 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
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Chemistry Medium Uploaded: 04 Sep 2026

What is quicklime chemically known as?

  • ACalcium sulfate
  • BCalcium carbonate
  • CCalcium hydroxide
  • DCalcium oxide
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Chemistry Medium Uploaded: 04 Sep 2026

What is a reducing agent?

  • AA substance that accepts protons
  • BA substance that loses electrons and gets oxidized
  • CA substance with no valence electrons
  • DA substance that gains electrons
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Chemistry Hard Uploaded: 04 Sep 2026

What is a mole fraction?

  • ARatio of volumes only
  • BRatio of moles of one component to total moles
  • CRatio of masses
  • DRatio of densities
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Chemistry Medium Uploaded: 04 Sep 2026

Which scientist proposed that electrons orbit the nucleus in fixed energy levels?

  • ADalton
  • BSchrodinger
  • CNiels Bohr
  • DRutherford
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Chemistry Easy Uploaded: 04 Sep 2026

What is the name of the smallest unit of a compound that retains its chemical properties?

  • AIon
  • BMolecule
  • CIsotope
  • DAtom
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Chemistry Easy Uploaded: 04 Sep 2026

What does STP stand for in chemistry?

  • AStandard temperature and pressure
  • BSolute temperature point
  • CStandard test pressure
  • DStandard time and pressure
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Chemistry Hard Uploaded: 04 Sep 2026

What is the term for the lowering of vapor pressure when a non-volatile solute is added to a solvent?

  • AOsmotic pressure
  • BBoiling point elevation
  • CFreezing point depression
  • DVapor pressure lowering
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Chemistry Easy Uploaded: 04 Sep 2026

What is the SI unit of molar concentration?

  • Ag/mol
  • Bmol/L
  • Cmol/kg
  • Dg/L
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Chemistry Medium Uploaded: 04 Sep 2026

Transition metals are characterized by partially filled which subshell?

  • As subshell
  • Bp subshell
  • Cf subshell
  • Dd subshell
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Chemistry Easy Uploaded: 04 Sep 2026

Which group of the periodic table contains the halogens?

  • AGroup 1
  • BGroup 2
  • CGroup 18
  • DGroup 17