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Chemistry MCQs

Prepare for competitive exams with our topic-wise Chemistry MCQs covering fundamental and advanced concepts. These multiple-choice questions include atomic structure, chemical bonding, periodic table, acids & bases, organic chemistry, thermodynamics, chemical equations, mole concept, electrochemistry, and biochemistry. Ideal for science students and job aspirants appearing in PPSC, FPSC, CSS, NTS, SPSC, BPSC, KPSC, ETEA, AJKPSC, and other testing services. A valuable resource for teachers, educators, and candidates targeting science educator posts, laboratory roles, and general science sections in public sector exams.

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1 Environmental Chemistry MCQs

The rate of ozone formation in the atmosphere mainly depends on the flux of which type of radiation?

  • Visible radiation
  • Ultraviolet (UV) radiation
  • Infrared radiation
  • Gamma rays
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Correct Answer: B. Ultraviolet (UV) radiation

Explanation:

Ozone (O₃) in the atmosphere is formed mainly in the stratosphere by the ... Read More Details

2 Chemistry MCQs

Sodium Carbonate is commonly called ?

  • Plaster of Paris
  • Washing Soda
  • Common Salt
  • None of these
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Correct Answer: B. Washing Soda

Explanation:

Sodium carbonate (Na₂CO₃) is an important inorganic compound commonly known as Washing Soda. ... Read More Details

3 Chemistry MCQs

The unit used to measure the quantity of ozone in the atmosphere is:

  • Dobson
  • Cloning
  • Dalton
  • Coulomb
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Correct Answer: A. Dobson

Explanation:

Ozone (O₃) is a molecule composed of three oxygen atoms that plays a ... Read More Details

4 Chemistry MCQs

Which metal is commonly known as quicksilver?

  • Mercury
  • Sulphuric acid
  • Chromite
  • Quartz
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Correct Answer: A. Mercury

Explanation:

Mercury is a unique metal that is commonly known as quicksilver due to ... Read More Details

5 Chemistry MCQs

Which of the following is an important ore of chromium?

  • Argon
  • Chromite
  • Mirage
  • Diamond
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Correct Answer: B. Chromite

Explanation:

Chromium is an important transition metal widely used in stainless steel production, metal ... Read More Details

6 Chemistry MCQs

What is the chemical name of bauxite?

  • Aluminium Oxide
  • Aluminium Chloride
  • Aluminium Sulphite
  • None of the above
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Correct Answer: A. Aluminium Oxide

Explanation:

Bauxite is the primary ore of aluminium, and it is composed mainly of ... Read More Details

7 Chemistry MCQs

Garnet is a ?

  • Sedimentary rock
  • Igneous rock
  • Mineral
  • None of these
0 Comments
Correct Answer: C. Mineral

Explanation:

Garnet is classified as a mineral, not a rock. It refers to a ... Read More Details

8 Chemistry MCQs

Gold and Silver are known as which type of metals?

  • Coinage metals
  • Noble metals
  • Both A & B
  • None of these
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Correct Answer: C. Both A & B

Explanation:

Gold (Au) and Silver (Ag) are unique metals that hold important places in ... Read More Details

9 Chemistry MCQs

Caustic soda (NaOH) is extensively used in the manufacturing of?

  • Surf (detergent)
  • Soap
  • Plaster of Paris
  • Gum
0 Comments
Correct Answer: B. Soap

Explanation:

Caustic soda, chemically known as sodium hydroxide (NaOH), is a strong base and ... Read More Details

10 Chemistry MCQs

The quality rating of diesel fuel is measured by which of the following?

  • Octane
  • Cetane
  • Propane
  • Butane
0 Comments
Correct Answer: B. Cetane

Explanation:

The quality of diesel fuel is measured using the cetane number, which indicates ... Read More Details

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