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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 Inorganic Chemistry MCQs

What is the molecular formula of Nitric acid?

  • HNO₂
  • HNO₃
  • HN₂O₂
  • H₂NO₄
0 Comments
Correct Answer: B. HNO₃

Explanation:

Nitric acid is a strong inorganic acid widely used in laboratories, chemical synthesis, ... Read More Details

2 Inorganic Chemistry MCQs

What is the molecular weight of Nitric acid (HNO₃)?

  • 63.012 g/mol
  • 65.012 g/mol
  • 70.012 g/mol
  • 81.011 g/mol
0 Comments
Correct Answer: A. 63.012 g/mol

Explanation:

The molecular formula of Nitric acid is HNO₃, consisting of 1 hydrogen atom ... Read More Details

3 Chemistry MCQs

The branch of chemistry that deals with brewing and distilling is called __________?

  • Zygology
  • Zymology
  • Zymurgy
  • Zootaxy
0 Comments
Correct Answer: C. Zymurgy

Explanation:

Zymurgy is the branch of chemistry that focuses on brewing, distilling, and fermentation-based ... Read More Details

4 Chemistry MCQs

The science of fermentation is called __________?

  • Zygology
  • Zymology
  • Zymurgy
  • Zootaxy
0 Comments
Correct Answer: B. Zymology

Explanation:

Zymology is the branch of science that deals with fermentation, a chemical process ... Read More Details

5 Physical Chemistry MCQs

The reciprocal of the coefficient of viscosity is called __________?

  • Density
  • Specific gravity
  • Fluidity
  • Absorbance
0 Comments
Correct Answer: C. Fluidity

Explanation:

In physical chemistry, the viscosity of a fluid measures its resistance to flow. ... Read More Details

6 Physical Chemistry MCQs

If the volume of a gas triples at constant temperature, what happens to its pressure?

  • 3P
  • P ÷ 3
  • 3P ÷ T
  • 6P
0 Comments
Correct Answer: B. P ÷ 3

Explanation:

According to Boyle’s Law, the pressure of a fixed mass of gas at ... Read More Details

7 Physical Chemistry MCQs

A theoretical connection between quantum mechanics and thermodynamics is called ?

  • Electrochemistry
  • Matrix mechanics
  • Statistical thermodynamics
  • Spectroscopic analysis
0 Comments
Correct Answer: C. Statistical thermodynamics

Explanation:

Statistical thermodynamics is a branch of physical chemistry that provides a theoretical connection ... Read More Details

8 Inorganic Chemistry MCQs

Stainless steel contains which of the following elements?

  • Fe + Cr + Ni
  • Fe + Ni + Cu
  • Fe + Cr + Cu
  • Cu + C + Ni
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Correct Answer: A. Fe + Cr + Ni

Explanation:

Stainless steel is an iron-based alloy that is highly resistant to corrosion and ... Read More Details

9 Inorganic Chemistry MCQs

In wrought iron, carbon is present as ?

  • Silicon carbide
  • Iron carbide
  • Graphite
  • Partly as iron carbide and partly as graphite
0 Comments
Correct Answer: B. Iron carbide

Explanation:

Wrought iron is a type of iron alloy that contains a very low ... Read More Details

10 Inorganic Chemistry MCQs

If steel is heated to a temperature below red heat and then cooled slowly, what is this process called?

  • Annealing
  • Quenching
  • Tempering
  • Nitriding
0 Comments
Correct Answer: A. Annealing

Explanation:

Annealing is a heat treatment process applied to steel and other metals to ... Read More Details

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