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PPSC MCQs

Punjab Public Service Commission — Complete MCQ Bank

1,997 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
981
Chemistry Medium Uploaded: 14 Jul 2026

What is the formula for calculating moles from mass and molar mass?

  • AMoles equals mass times molar mass
  • BMoles equals molar mass divided by mass
  • CMoles equals mass divided by molar mass
  • DMoles equals mass times volume
982
Chemistry Medium Uploaded: 14 Jul 2026

Which process is used to separate crude oil into useful fractions based on different boiling points?

  • AFractional distillation
  • BChromatography
  • CCrystallisation
  • DFiltration
983
Chemistry Medium Uploaded: 14 Jul 2026

Which element is liquid at room temperature and is the only non-metal element in this state?

  • AMercury
  • BBromine
  • CGallium
  • DCaesium
984
Chemistry Hard Uploaded: 14 Jul 2026

What is the term for the energy required to remove one electron from a gaseous atom?

  • AElectron affinity
  • BElectronegativity
  • CLattice energy
  • DIonisation energy
985
Chemistry Medium Uploaded: 14 Jul 2026

Which type of organic reaction involves the addition of bromine water across a carbon to carbon double bond?

  • AAddition
  • BSubstitution
  • CElimination
  • DHydrolysis
986
Chemistry Medium Uploaded: 14 Jul 2026

What is formed when an alcohol reacts with a carboxylic acid?

  • AEster and water
  • BSalt and water
  • CSoap
  • DAlkene and water
987
Chemistry Medium Uploaded: 14 Jul 2026

Which organic functional group is present in carboxylic acids?

  • AHydroxyl group
  • BCarboxyl group COOH
  • CCarbonyl group
  • DAmino group
988
Chemistry Medium Uploaded: 14 Jul 2026

Which organic functional group is present in alcohols?

  • ACarbonyl group
  • BHydroxyl group
  • CCarboxyl group
  • DAmino group
989
Chemistry Medium Uploaded: 14 Jul 2026

What is the chemical formula for calcium hydroxide also known as slaked lime?

  • ACaO
  • BCaCO3
  • CCa(OH)2
  • DCaCl2
990
Chemistry Medium Uploaded: 14 Jul 2026

Which acid is used in car batteries as the electrolyte?

  • ASulfuric acid
  • BHydrochloric acid
  • CNitric acid
  • DAcetic acid