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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 Physical Chemistry MCQs

A helium nucleus, comprising two protons and two neutrons with a charge of 2e, is called ?

  • Beta particle
  • Gamma particle
  • Alpha particle
  • Negative particle
0 Comments
Correct Answer: C. Alpha particle

Explanation:

In nuclear chemistry, an alpha particle is the nucleus of a helium atom. ... Read More Details

2 Physical Chemistry MCQs

Chromatography is used to separate _________ ?

  • Solution
  • Mixtures
  • Molecules
  • Atoms
0 Comments
Correct Answer: B. Mixtures

Explanation:

Chromatography is a widely used laboratory technique for separating mixtures into individual components. ... Read More Details

3 Inorganic Chemistry MCQs

In a group of the periodic table, atomic radii increase due to the successive increase of __________?

  • Electronic shells
  • Proton shells
  • Neutron shells
  • Nucleus
0 Comments
Correct Answer: A. Electronic shells

Explanation:

In the periodic table, elements are arranged in groups (columns) that share similar ... Read More Details

4 Physical Chemistry MCQs

The distance at which the attractive forces of hydrogen overcome the repulsive forces is __________?

  • 75.2 pm
  • 75.3 pm
  • 75.5 pm
  • 75.4 pm
0 Comments
Correct Answer: D. 75.4 pm

Explanation:

In physical chemistry, understanding interatomic forces is important for studying molecular structure and ... Read More Details

5 Inorganic Chemistry MCQs

Quantum numbers are __________?

  • Arithmetical values
  • Numerical values
  • Geometric values
  • Logical values
0 Comments
Correct Answer: B. Numerical values

Explanation:

In atomic theory, quantum numbers are used to describe the unique state of ... Read More Details

6 Physical Chemistry MCQs

The column of a manometer which faces the liquid is ?

  • Raised
  • Depressed
  • Compressed
  • Remains same
0 Comments
Correct Answer: B. Depressed

Explanation:

A manometer is an instrument used to measure pressure differences between a gas ... Read More Details

7 Physical Chemistry MCQs

The process used to separate insoluble particles from liquids is called ___________?

  • Drying
  • Filtration
  • Sieving
  • Extraction
0 Comments
Correct Answer: B. Filtration

Explanation:

Filtration is a common laboratory process used to separate insoluble solid particles from ... Read More Details

8 Physical Chemistry MCQs

The effective volume in gas calculations is usually taken for how many moles of gas?

  • 2 moles of gas
  • 1 mole of gas
  • 5 moles of gas
  • 3 moles of gas
0 Comments
Correct Answer: B. 1 mole of gas

Explanation:

In physical chemistry, the concept of effective volume is commonly used in gas ... Read More Details

9 Inorganic Chemistry MCQs

In the whole periodic table, which element is the strongest reducing agent?

  • Chlorine
  • Lithium
  • Helium
  • Neon
0 Comments
Correct Answer: B. Lithium

Explanation:

A reducing agent is a substance that donates electrons to another substance during ... Read More Details

10 Environmental Chemistry MCQs

Which compound is responsible for destroying the ozone layer?

  • CFCs
  • CH₃COOH
  • Both A & B
  • None of these
0 Comments
Correct Answer: A. CFCs

Explanation:

The ozone layer is a protective layer in the Earth's stratosphere that absorbs ... Read More Details

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