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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 Organic Chemistry MCQs

Vulcanized rubber belongs to which type of polymer?

  • Natural polymers
  • Semisynthetic polymers
  • Synthetic polymers
  • None of the above
0 Comments
Correct Answer: B. Semisynthetic polymers

Explanation:

Polymers can be divided into three main classes: natural polymers, synthetic polymers, and ... Read More Details

2 Organic Chemistry MCQs

Example of linear polymer is ?

  • High density polythene
  • Low density polythene
  • PVC
  • Both A and C
0 Comments
Correct Answer: D. Both A and C

Explanation:

Polymers can be classified as linear, branched, or cross-linked depending on how their ... Read More Details

3 Organic Chemistry MCQs

Example of cross-linked polymer is ?

  • Nylon
  • Polyester
  • Bakelite
  • PVC
0 Comments
Correct Answer: C. Bakelite

Explanation:

Polymers can be broadly divided into two types: linear polymers and cross-linked polymers. ... Read More Details

4 Organic Chemistry MCQs

Neoprene is ?

  • Natural rubber
  • Vulcanized rubber
  • Synthetic rubber
  • None of the above
0 Comments
Correct Answer: C. Synthetic rubber

Explanation:

Neoprene is one of the earliest synthetic rubbers developed by chemists to replace ... Read More Details

5 Physical Chemistry MCQs

Numbers of subatomic particles?

  • 2
  • 3
  • 1
  • more than 3
0 Comments
Correct Answer: D. more than 3

Explanation:

Atoms are very small units of matter, and they are built from even ... Read More Details

6 Organic Chemistry MCQs

Schiff’s reagent gives pink color with ?

  • Acetone
  • Acetaldehyde
  • Acetic acid
  • Methyl acetate
0 Comments
Correct Answer: B. Acetaldehyde

Explanation:

Schiff’s reagent is a well-known test in organic chemistry to identify aldehydes. It ... Read More Details

7 Organic Chemistry MCQs

Lactic acid on oxidation by alkaline potassium permanganate gives: ?

  • Propionic acid
  • Cinnamic acid
  • Pyruvic acid
  • Tartaric acid
0 Comments
Correct Answer: C. Pyruvic acid

Explanation:

Lactic acid is an organic compound that has both a hydroxyl group (–OH) ... Read More Details

8 Chemistry MCQs

What is the chemical name of chalk?

  • Sodium nitrate
  • Zinc sulfate
  • Sulphuric acid
  • Calcium carbonate
0 Comments
Correct Answer: D. Calcium carbonate

Explanation:

Chalk is a soft, white, porous sedimentary rock commonly used for writing on ... Read More Details

9 Chemistry MCQs

Which gases are commonly used in welding?

  • Oxygen and hydrogen
  • Oxygen, hydrogen, acetylene and nitrogen
  • Oxygen, acetylene and argon
  • Oxygen and acetylene
0 Comments
Correct Answer: D. Oxygen and acetylene

Explanation:

Welding is a process used to join metals by melting them together. One ... Read More Details

10 Chemistry MCQs

What is potassium nitrate mainly used for?

  • Medicine
  • Fertilizer
  • Salt
  • Glass
0 Comments
Correct Answer: B. Fertilizer

Explanation:

Potassium nitrate (KNO₃) is a chemical compound widely used in agriculture and industry. ... Read More Details

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