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PPSC MCQs

Punjab Public Service Commission — Complete MCQ Bank

164 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
131
Chemistry Easy Uploaded: 14 Jul 2026

What is the chemical symbol for silver?

  • ASi
  • BAg
  • CSr
  • DSn
132
Chemistry Easy Uploaded: 14 Jul 2026

Which acid is present in the human stomach to aid digestion?

  • ASulfuric acid
  • BNitric acid
  • CAcetic acid
  • DHydrochloric acid
133
Chemistry Medium Uploaded: 14 Jul 2026

What is the chemical formula for calcium carbonate found in limestone and chalk?

  • ACaSO4
  • BCa(OH)2
  • CCaCl2
  • DCaCO3
134
Chemistry Medium Uploaded: 14 Jul 2026

Which isotope of carbon is used in radiocarbon dating?

  • ACarbon-12
  • BCarbon-13
  • CCarbon-11
  • DCarbon-14
135
Chemistry Medium Uploaded: 14 Jul 2026

What is an isotope?

  • AAtoms of different elements with the same mass
  • BAtoms of the same element with different numbers of protons
  • CAtoms of the same element with the same number of protons but different neutrons
  • DAtoms of different elements with the same electrons
136
Chemistry Hard Uploaded: 14 Jul 2026

Which element has the highest electronegativity on the Pauling scale?

  • AOxygen
  • BChlorine
  • CNitrogen
  • DFluorine
137
Chemistry Easy Uploaded: 14 Jul 2026

What is the chemical name of NaOH?

  • ASodium chloride
  • BSodium carbonate
  • CSodium bicarbonate
  • DSodium hydroxide
138
Chemistry Easy Uploaded: 14 Jul 2026

Which type of reaction involves an acid reacting with a base to form salt and water?

  • ADecomposition
  • BRedox
  • CNeutralisation
  • DPrecipitation
139
Chemistry Easy Uploaded: 14 Jul 2026

What is the chemical formula for methane, the main component of natural gas?

  • AC2H6
  • BCH4
  • CC3H8
  • DC2H4
140
Chemistry Medium Uploaded: 14 Jul 2026

Which gas is used in fire extinguishers to smother flames by displacing oxygen?

  • ACarbon dioxide
  • BNitrogen
  • COxygen
  • DWater vapour