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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 Chemistry MCQs

Which of the following is a liquid fuel?

  • Petrol
  • Kerosene
  • Paraffin oil
  • All of these
0 Comments
Correct Answer: D. All of these

Explanation:

Liquid fuels are substances that are in liquid form at room temperature and ... Read More Details

2 Chemistry MCQs

Which of the following is mainly used for light petrol engines?

  • Kerosene oil
  • Paraffin oil
  • Heavy Fuel oil
  • Gasoline
0 Comments
Correct Answer: D. Gasoline

Explanation:

Light petrol engines, like those used in cars, motorcycles, and scooters, require a ... Read More Details

3 Physical Chemistry MCQs

In isothermal process?

  • No heat enter or leave the system
  • Pressure of the system remains constant
  • Temperature of the system remains constant
  • Volume of the system remains unchanged
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Correct Answer: C. Temperature of the system remains constant

Explanation:

An isothermal process is a type of thermodynamic process in which the temperature ... Read More Details

4 Physical Chemistry MCQs

Greater the heat of neutralization the acid will be ?

  • More stronger
  • More weaker
  • Not related to acid strength
  • None of these
0 Comments
Correct Answer: A. More stronger

Explanation:

The heat of neutralization is the heat released when an acid reacts with ... Read More Details

5 Organic Chemistry MCQs

Hyperconjugation is also known as ?

  • Reasonable
  • No bond resonance
  • Inductive effect
  • Electromeric effect
0 Comments
Correct Answer: B. No bond resonance

Explanation:

Hyperconjugation is a very important electronic effect in organic chemistry. It explains the ... Read More Details

6 Organic Chemistry MCQs

Electromeric effect is ____________?

  • Permanent effect
  • Operates due to electronegativity difference
  • Temporary effect
  • None of the above
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Correct Answer: C. Temporary effect

Explanation:

The electromeric effect (E-effect) is an important concept in organic chemistry that explains ... Read More Details

7 Organic Chemistry MCQs

Methyl radical is ___________?

  • sp³ hybrid having 8 electrons
  • sp² hybrid having 6 electrons
  • sp² hybrid having 7 electrons
  • sp hybrid having linear geometry
0 Comments
Correct Answer: C. sp² hybrid having 7 electrons

Explanation:

The methyl radical (•CH₃) is a fundamental species in organic chemistry and free ... Read More Details

8 Organic Chemistry MCQs

Nylon-2-nylon-6 is a __________ polymer?

  • Biodegradable polymer
  • Synthetic polymer
  • Natural polymer
  • Branched polymer
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Correct Answer: A. Biodegradable polymer

Explanation:

Polymers can be categorized into several types depending on their origin, structure, and ... Read More Details

9 Organic Chemistry MCQs

Which of the following is an example of a copolymer?

  • Polyethylene
  • PVC
  • Orlon
  • Nylon 6,6
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Correct Answer: D. Nylon 6,6

Explanation:

Polymers can be classified into homopolymers and copolymers based on the type of ... Read More Details

10 Organic Chemistry MCQs

Hexamethylene diamine and adipic acid combine to form which polymer?

  • Natural rubber
  • Synthetic rubber
  • Nylon 6,6
  • Polystyrene
0 Comments
Correct Answer: C. Nylon 6,6

Explanation:

Polymers can be made through two major processes: addition polymerization and condensation polymerization. ... Read More Details

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