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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

A 10-volume solution of H₂O₂ means ?

  • 10 grams of H₂O₂ solution liberate 10 mL of O₂ at STP
  • 10 gram equivalents of H₂O₂ liberate 10 mL of O₂ at STP
  • 10 litres of H₂O₂ liberate 19 mL of O₂ at STP
  • 1 mL of solution of H₂O₂ liberates 10 mL of O₂ at STP
0 Comments
Correct Answer: D. 1 mL of solution of H₂O₂ liberates 10 mL of O₂ at STP

Explanation:

The volume strength of a hydrogen peroxide (H₂O₂) solution is a measure of ... Read More Details

2 Physical Chemistry MCQs

The volume strength of a 1.5 N H₂O₂ solution is __________?

  • 4.8
  • 5.2
  • 8.8
  • 8.4
0 Comments
Correct Answer: D. 8.4

Explanation:

Volume strength is a measure of the oxidizing power of hydrogen peroxide (H₂O₂) ... Read More Details

3 Physical Chemistry MCQs

The structure of hydrogen peroxide (H₂O₂) is __________?

  • Planar
  • Non-polar
  • Spherical
  • Linear
0 Comments
Correct Answer: B. Non-polar

Explanation:

Hydrogen peroxide (H₂O₂) is a simple molecule composed of two hydrogen atoms and ... Read More Details

4 Inorganic Chemistry MCQs

Which of the following elements has the maximum electron affinity?

  • Chlorine (Cl)
  • Bromine (Br)
  • Iodine (I)
  • Fluorine (F)
0 Comments
Correct Answer: A. Chlorine (Cl)

Explanation:

Electron affinity (EA) is the energy change that occurs when an atom gains ... Read More Details

5 Inorganic Chemistry MCQs

The type of hybridization of boron in diborane (B₂H₆) is __________?

  • sp hybridization
  • sp² hybridization
  • sp³ hybridization
  • sp³d² hybridization
0 Comments
Correct Answer: A. sp hybridization

Explanation:

Diborane (B₂H₆) is a well-known example of an electron-deficient compound in inorganic chemistry. ... Read More Details

6 Inorganic Chemistry MCQs

Which of the following conducts electricity?

  • Potassium
  • Graphite
  • Diamond
  • Sodium
0 Comments
Correct Answer: B. Graphite

Explanation:

Electrical conductivity depends on the presence of free-moving charged particles such as electrons ... Read More Details

7 Inorganic Chemistry MCQs

Cassiterite is an ore of which metal?

  • Manganese (Mn)
  • Nickel (Ni)
  • Antimony (Sb)
  • Tin (Sn)
0 Comments
Correct Answer: D. Tin (Sn)

Explanation:

Cassiterite is the principal ore of tin (Sn) and is chemically known as ... Read More Details

8 Inorganic Chemistry MCQs

What is the percentage of lead in a lead pencil?

  • 0%
  • 20%
  • 80%
  • 70%
0 Comments
Correct Answer: A. 0%

Explanation:

Despite the common name, a lead pencil contains no actual lead. The black ... Read More Details

9 Inorganic Chemistry MCQs

In the borax bead test, which compound is formed?

  • Ortho borate
  • Meta borate
  • Double oxide
  • Tetra borate
0 Comments
Correct Answer: B. Meta borate

Explanation:

The borax bead test is a classical method used in qualitative inorganic analysis ... Read More Details

10 Physical Chemistry MCQs

What is the shape of a water (H₂O) molecule?

  • V-shaped
  • Angular
  • Pyramidal
  • Triangular planar
0 Comments
Correct Answer: A. V-shaped

Explanation:

The water molecule (H₂O) consists of a central oxygen atom bonded to two ... Read More Details

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