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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

Which one of the following is not a property of pure quartz?

  • Coloured solid
  • Brittle
  • Hard
  • All of the above
0 Comments
Correct Answer: A. Coloured solid

Explanation:

Quartz is one of the most abundant and well-known minerals on Earth, composed ... Read More Details

2 Inorganic Chemistry MCQs

Which of the following does not contain phosphorus?

  • Yolk of egg
  • Bone
  • Nerves
  • Steel
0 Comments
Correct Answer: D. Steel

Explanation:

Phosphorus is a vital non-metallic element found in many organic and inorganic compounds. ... Read More Details

3 Inorganic Chemistry MCQs

Which one of the following is not a use of graphite?

  • Lead pencils
  • Abrasive
  • Lubricant
  • Electrode in an electrolytic cell
0 Comments
Correct Answer: B. Abrasive

Explanation:

Graphite is a soft, black, crystalline form of carbon known for its unique ... Read More Details

4 Inorganic Chemistry MCQs

What is the composition of the brown ring formed in the nitrate test?

  • FeSO₄·NO
  • FeSO₄·NO₂
  • FeSO₄·NO₃
  • FeSO₄·N₂O
0 Comments
Correct Answer: A. FeSO₄·NO

Explanation:

The brown ring test is a classical method used to detect the presence ... Read More Details

5 Inorganic Chemistry MCQs

Which one of the following compounds has a garlic-like smell?

  • Phosphorus trioxide (P₂O₃)
  • Phosphorus pentoxide (P₂O₅)
  • Phosphorous acid (H₃PO₃)
  • All have the same smell
0 Comments
Correct Answer: A. Phosphorus trioxide (P₂O₃)

Explanation:

Among phosphorus compounds, phosphorus trioxide (P₂O₃) is known for its distinct garlic-like smell. ... Read More Details

6 Inorganic Chemistry MCQs

Which element in Group VIA (Group 16) of the Periodic Table is a non-metal?

  • Sulfur (S)
  • Selenium (Se)
  • Tellurium (Te)
  • Polonium (Po)
0 Comments
Correct Answer: A. Sulfur (S)

Explanation:

Group VIA, now referred to as Group 16 in the modern periodic table, ... Read More Details

7 Inorganic Chemistry MCQs

Which of the following elements shows passivity when treated with concentrated nitric acid (HNO₃)?

  • Iron (Fe)
  • Aluminum (Al)
  • Chromium (Cr)
  • All of the above
0 Comments
Correct Answer: D. All of the above

Explanation:

Passivity is a condition in which a normally active metal becomes resistant to ... Read More Details

8 Chemistry MCQs

Turpentine is obtained from?

  • Oak tree
  • Pine tree
  • Birch tree
  • Lemon tree
0 Comments
Correct Answer: B. Pine tree

Explanation:

Turpentine is a volatile, flammable liquid obtained primarily from the resin of pine ... Read More Details

9 Chemistry MCQs

What is the chemical formula for water?

  • NaAlO₂
  • H₂O
  • Al₂O₃
  • CaSiO₃
0 Comments
Correct Answer: B. H₂O

Explanation:

Water is one of the most essential compounds for life and is represented ... Read More Details

10 Chemistry MCQs

The ozone (O₃) molecule contains which type of chemical bonding?

  • Dative bond
  • Covalent bond
  • Both A and B
  • Ionic bond
0 Comments
Correct Answer: C. Both A and B

Explanation:

Ozone (O₃) is a triatomic molecule composed of three oxygen atoms. Its chemical ... Read More Details

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