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Chemistry MCQs

164 Questions Subject Test
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Practice the essential concepts of matter, atomic structure, chemical reactions, bonding and everyday applications of chemistry.

Atomic StructureChemical BondingReactionsOrganic Chemistry
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161
Easy ppsc Uploaded: 07 Aug 2026

Which reaction type involves the combination of two or more substances to form a single product?

  • A Decomposition reaction
  • B Combination reaction
  • C Displacement reaction
  • D Double displacement reaction
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162
Medium css fpsc ppsc Uploaded: 05 Aug 2026

Which chemical process converts vegetable oils into solid fats by adding hydrogen gas?

  • A Saponification
  • B Hydrogenation
  • C Esterification
  • D Fermentation
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163
Medium fpsc ppsc nts Uploaded: 14 Jul 2026

Which acid is used in car batteries as the electrolyte?

  • A Sulfuric acid
  • B Hydrochloric acid
  • C Nitric acid
  • D Acetic acid
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164
Medium fpsc ppsc nts Uploaded: 14 Jul 2026

Which process separates a mixture of liquids based on their different boiling points?

  • A Distillation
  • B Filtration
  • C Crystallisation
  • D Chromatography
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