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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 Physical Chemistry MCQs

Which of the following is a non-crystalline solid pair?

  • Diamond, wood
  • Glass, table salt
  • Wood, glass
  • Sucrose, glass
0 Comments
Correct Answer: C. Wood, glass

Explanation:

Solids are broadly classified into crystalline and non-crystalline (amorphous) solids. Crystalline solids have ... Read More Details

2 Chemistry MCQs

Actinides are the elements with atomic numbers from ?

  • 97 to 104
  • 101 to 115
  • 89 to 103
  • 36 to 43
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Correct Answer: C. 89 to 103

Explanation:

The actinide series is a group of 15 chemical elements in the periodic ... Read More Details

3 Analytical Chemistry MCQs

Mass spectrometry mainly provides information about ?

  • Mass
  • e/m ratio
  • Isotopes
  • None of these
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Correct Answer: B. e/m ratio

Explanation:

Mass spectrometry (MS) is a powerful analytical technique that works on the principle ... Read More Details

4 Organic Chemistry MCQs

Ketones and aldehydes can be distinguished using which reagent?

  • Benedict’s solution
  • Fehling’s solution
  • Tollens’ reagent
  • None of these
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Correct Answer: C. Tollens’ reagent

Explanation:

Aldehydes and ketones are two important classes of carbonyl compounds in organic chemistry. ... Read More Details

5 Physical Chemistry MCQs

The size of colloidal particles is:

  • Greater than true solution
  • Greater than suspension
  • In between true solution and suspension
  • All of these
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Correct Answer: C. In between true solution and suspension

Explanation:

Colloids represent a unique state of matter that lies between true solutions and ... Read More Details

6 Organic Chemistry MCQs

The antiseptic Urotropine is formed from which compound?

  • Carboxylic acid
  • Acetaldehyde
  • Formaldehyde
  • Ketone
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Correct Answer: C. Formaldehyde

Explanation:

Urotropine, also known as hexamethylenetetramine, is a crystalline organic compound that has important ... Read More Details

7 Inorganic Chemistry MCQs

Isotopes differ in which property?

  • Arrangement of electrons in orbitals
  • Position in the periodic table
  • Properties that depend on mass
  • Chemical properties
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Correct Answer: C. Properties that depend on mass

Explanation:

Isotopes are atoms of the same element that have the same number of ... Read More Details

8 Inorganic Chemistry MCQs

Which is the most stable oxidation state of Vanadium?

  • V²⁺
  • V³⁺
  • V⁴⁺
  • V⁵⁺
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Correct Answer: B. V³⁺

Explanation:

Vanadium is a transition metal with the atomic number 23. It exhibits multiple ... Read More Details

9 Inorganic Chemistry MCQs

Which oxidation state of copper (Cu) is expected to be diamagnetic?

  • Cu²⁺
  • Cu⁴⁺
  • Cu⁺
  • Cu³⁺
0 Comments
Correct Answer: C. Cu⁺

Explanation:

Copper is a transition metal with the atomic number 29. Its electronic configuration ... Read More Details

10 Physical Chemistry MCQs

Oobleck is a mixture of which two substances?

  • Gram flour and water
  • Baking soda and vinegar
  • Cement and water
  • Cornstarch and water
0 Comments
Correct Answer: D. Cornstarch and water

Explanation:

Oobleck is a non-Newtonian fluid, meaning it behaves differently under stress or pressure. ... Read More Details

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