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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 of the following elements is used in cancer therapy?

  • Iron (Fe)
  • Cobalt (Co)
  • Nickel (Ni)
  • Radon (Rn)
0 Comments
Correct Answer: B. Cobalt (Co)

Explanation:

Cobalt (Co) is a transition metal that has important applications in cancer therapy, ... Read More Details

2 Inorganic Chemistry MCQs

Which of the following is not a common property of transition elements?

  • Variable oxidation states
  • Natural radioactivity
  • Tendency to form complexes
  • Formation of alloys
0 Comments
Correct Answer: B. Natural radioactivity

Explanation:

Transition elements are d-block elements in the periodic table, characterized by partially filled ... Read More Details

3 Inorganic Chemistry MCQs

Which of the following alloys contains copper (Cu) and zinc (Zn)?

  • Bronze
  • Brass
  • Gun-metal
  • Type metal
0 Comments
Correct Answer: B. Brass

Explanation:

An alloy is a mixture of two or more metals, or a metal ... Read More Details

4 Inorganic Chemistry MCQs

Which of the following silver halides is soluble in water?

  • AgF
  • AgCl
  • AgBr
  • AgI
0 Comments
Correct Answer: A. AgF

Explanation:

Silver halides are compounds formed between silver (Ag⁺) ions and halide ions (F⁻, ... Read More Details

5 Inorganic Chemistry MCQs

What is the maximum oxidation state shown by manganese?

  • +4
  • +5
  • +6
  • +7
0 Comments
Correct Answer: D. +7

Explanation:

Manganese (Mn) is a transition metal with atomic number 25 and electronic configuration ... Read More Details

6 Inorganic Chemistry MCQs

The colour of transition metal compounds is mainly due to ____________?

  • Small-sized metal ions
  • Absorption of light in the UV region
  • A complete ns sub-shell
  • An incomplete (n–1) d sub-shell
0 Comments
Correct Answer: D. An incomplete (n–1) d sub-shell

Explanation:

Transition metal compounds are well known for their bright colours. The origin of ... Read More Details

7 Inorganic Chemistry MCQs

Which of the following statements is false about transition metals?

  • They form complexes
  • They show variable valency
  • All transition metal compounds are paramagnetic
  • They form coloured ions
0 Comments
Correct Answer: C. All transition metal compounds are paramagnetic

Explanation:

Transition metals are elements found in the d-block of the periodic table. They ... Read More Details

8 Organic Chemistry MCQs

The by-product of the process of saponification is ___________?

  • Methanol
  • Glycol
  • Glycerol
  • Sodium hydroxide
0 Comments
Correct Answer: C. Glycerol

Explanation:

The process of saponification is the basic chemical reaction behind soap making. In ... Read More Details

9 Organic Chemistry MCQs

Polyethylene Glycols (PEGs) are used in the preparation of which type of detergents?

  • Cationic detergents
  • Anionic detergents
  • Non-ionic detergents
  • All of the above
0 Comments
Correct Answer: C. Non-ionic detergents

Explanation:

Detergents are classified into anionic, cationic, non-ionic, and amphoteric types depending on the ... Read More Details

10 Organic Chemistry MCQs

Which type of surfactants perform well over a wide range of water hardness and pH?

  • Anionic
  • Cationic
  • Nonionic
  • Neutral
0 Comments
Correct Answer: C. Nonionic

Explanation:

Surfactants are surface-active agents that reduce the surface tension of water and help ... Read More Details

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