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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

The purpose of smelting an ore is to __________?

  • Reduce it
  • Oxidize it
  • Obtain an alloy
  • Separate volatile impurities
0 Comments
Correct Answer: A. Reduce it

Explanation:

Smelting is a fundamental process in metallurgy used to extract metals from their ... Read More Details

2 Inorganic Chemistry MCQs

Which oxide of manganese is amphoteric?

  • MnO₂
  • Mn₂O₃
  • Mn₂O₇
  • MnO
0 Comments
Correct Answer: A. MnO₂

Explanation:

Manganese oxides exhibit a variety of chemical behaviors depending on their oxidation states. ... Read More Details

3 Inorganic Chemistry MCQs

A process used for the concentration of ore is __________?

  • Roasting
  • Froth flotation
  • Electrolysis
  • Distillation
0 Comments
Correct Answer: B. Froth flotation

Explanation:

Ore concentration is an essential step in metallurgy, where the valuable metal-containing minerals ... Read More Details

4 Inorganic Chemistry MCQs

Which metal is commonly used as a reducing agent in smelting?

  • Carbon (C)
  • Zinc (Zn)
  • Aluminium (Al)
  • Copper (Cu)
0 Comments
Correct Answer: A. Carbon (C)

Explanation:

In metallurgy, a reducing agent is a substance that donates electrons to a ... Read More Details

5 Inorganic Chemistry MCQs

Parke’s process is used in the extraction of __________?

  • Iron
  • Sodium
  • Silver
  • Zinc
0 Comments
Correct Answer: C. Silver

Explanation:

Parke’s process is an important method used in metallurgy for the extraction of ... Read More Details

6 Inorganic Chemistry MCQs

During the melting of iron, which reaction takes place in a Blast Furnace at 400°C–600°C?

  • CaO + SiO₂ → CaSiO₃
  • 2FeS + 3O₂ → 2Fe + 2SO₂
  • FeSiO₃ → FeSiO₃
  • Fe₂O₃ + 3CO → 2Fe + 3CO₂
0 Comments
Correct Answer: D. Fe₂O₃ + 3CO → 2Fe + 3CO₂

Explanation:

Iron extraction in a blast furnace is a key process in metallurgy and ... Read More Details

7 Inorganic Chemistry MCQs

Gypsum is chemically represented as __________?

  • CaSO₄
  • CaSO₄·½H₂O
  • CaSO₄·2H₂O
  • CaSO₄·3H₂O
0 Comments
Correct Answer: C. CaSO₄·2H₂O

Explanation:

Gypsum is a naturally occurring mineral widely used in construction, agriculture, and industry. ... Read More Details

8 Inorganic Chemistry MCQs

The basicity of orthophosphoric acid (H₃PO₄) is __________?

  • 2
  • 3
  • 4
  • 5
0 Comments
Correct Answer: B. 3

Explanation:

Orthophosphoric acid (H₃PO₄), also called phosphoric acid, is a triprotic acid, meaning it ... Read More Details

9 Inorganic Chemistry MCQs

Cerium (Ce, atomic number 58) is a member of which block of elements?

  • S-block
  • P-block
  • D-block
  • F-block
0 Comments
Correct Answer: D. F-block

Explanation:

Cerium (Ce), with atomic number 58, is a member of the f-block elements, ... Read More Details

10 Inorganic Chemistry MCQs

The electronic configuration of a calcium (Ca) atom can be written as __________?

  • [Ne] 4p²
  • [Ar] 4s²
  • [Ne] 4s²
  • [Kr] 4p²
0 Comments
Correct Answer: B. [Ar] 4s²

Explanation:

The electronic configuration of an atom shows the distribution of electrons in its ... Read More Details

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