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Chemistry MCQs

56 Questions Subject Test
Subject Preparation Guide

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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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Which of the following elements is a metalloid?

  • A Silicon
  • B Sodium
  • C Sulfur
  • D Silver
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Which term describes the amount of a substance dissolved in a given amount of solvent?

  • A Solubility
  • B Density
  • C Molarity only
  • D Concentration
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What is the SI unit of electric current used in Faraday's laws?

  • A Volt
  • B Coulomb
  • C Ohm
  • D Ampere
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What distinguishes a saturated hydrocarbon from an unsaturated one?

  • A Presence of aromatic rings
  • B Presence of double bonds
  • C Presence of triple bonds
  • D Presence of only single bonds
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What is nuclear fusion?

  • A Loss of a neutron from an atom
  • B Combining of light nuclei to form a heavier nucleus
  • C Splitting of a heavy nucleus
  • D Gain of an electron
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Which of the following is a noble gas?

  • A Chlorine
  • B Neon
  • C Sulfur
  • D Phosphorus
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What is the chemical symbol for Potassium?

  • A Po
  • B Pt
  • C K
  • D P
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Which process involves the splitting of a heavy nucleus into smaller nuclei?

  • A Beta decay
  • B Nuclear fusion
  • C Nuclear fission
  • D Radioactive decay
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Which gas is used in the manufacture of fertilizers?

  • A Oxygen
  • B Ammonia
  • C Chlorine
  • D Helium
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According to Bronsted-Lowry theory, a base is defined as a:

  • A Electron pair acceptor
  • B Proton donor
  • C Electron pair donor
  • D Proton acceptor
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The Contact process is used industrially to manufacture:

  • A Nitric acid
  • B Sodium carbonate
  • C Ammonia
  • D Sulfuric acid
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Which vitamin is synthesized in human skin upon exposure to sunlight?

  • A Vitamin D
  • B Vitamin C
  • C Vitamin B12
  • D Vitamin A
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What is the valency of Oxygen?

  • A 1
  • B 3
  • C 2
  • D 4
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Which of the following is an example of an organic compound?

  • A Sodium chloride
  • B Glucose
  • C Water
  • D Carbon dioxide
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Which gas is responsible for the pungent smell in rotten eggs?

  • A Ammonia
  • B Methane
  • C Sulfur dioxide
  • D Hydrogen sulfide
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Which element is a metalloid?

  • A Silicon
  • B Calcium
  • C Aluminum
  • D Sodium
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Easy pms Uploaded: 06 Aug 2026

Which of the following is a greenhouse gas?

  • A Carbon dioxide
  • B Nitrogen
  • C Argon
  • D Helium
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Which element is used as a moderator in nuclear reactors?

  • A Uranium
  • B Plutonium
  • C Graphite
  • D Cadmium
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Which of these compounds is an example of an ester?

  • A Ethanol
  • B Ethanoic acid
  • C Ethyl ethanoate
  • D Ethylene
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Hard pms Uploaded: 04 Sep 2026

What is Henry's Law used to describe?

  • A Vapor pressure of solutions
  • B Solubility of gases in liquids
  • C Boiling point elevation
  • D Solubility of solids in liquids
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