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Inorganic Chemistry MCQs

Master fundamental concepts of Inorganic Chemistry with our topic-wise Inorganic Chemistry MCQs, ideal for students and professionals preparing for competitive exams. These multiple-choice questions cover periodic table trends, chemical bonding, coordination compounds, transition elements, acids and bases, oxidation states, group properties, metallurgy, salt analysis, and qualitative inorganic analysis. Perfect for candidates appearing in PPSC, FPSC, CSS, NTS, SPSC, BPSC, KPSC, ETEA, AJKPSC, and exams for Lecturer Chemistry, laboratory analyst roles, and BSc/MSc Chemistry programs.

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1 Inorganic Chemistry MCQs

The process used for the extraction of aluminium is called ____________?

  • Hall process
  • Thermite process
  • Haber process
  • Contact process
0 Comments
Correct Answer: A. Hall process

Explanation:

The industrial extraction of aluminium is carried out by the Hall-Héroult process, named ... Read More Details

2 Inorganic Chemistry MCQs

An aqueous solution of borax above 62°C gives crystals of which compound?

  • Na₂B₄O₇·4H₂O
  • Na₂B₄O₇·5H₂O
  • Na₂B₄O₇·2H₂O
  • Na₂B₄O₇·10H₂O
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Correct Answer: B. Na₂B₄O₇·5H₂O

Explanation:

Borax, chemically known as sodium tetraborate (Na₂B₄O₇·10H₂O), is a well-known inorganic compound that ... Read More Details

3 Inorganic Chemistry MCQs

Which of the following is not a use of silicon?

  • Lubricants
  • Hydraulic brakes
  • Antifreeze
  • Water repellent
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Correct Answer: B. Hydraulic brakes

Explanation:

Silicon is a non-metallic element belonging to group 14 of the periodic table. ... Read More Details

4 Inorganic Chemistry MCQs

Which of the following statements about carbon monoxide (CO) is correct?

  • It combines with H₂O to form carbonic acid
  • It reacts with the hemoglobin in red blood cells
  • It is a powerful oxidizing agent
  • It is used to prepare aerated drinks
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Correct Answer: B. It reacts with the hemoglobin in red blood cells

Explanation:

Carbon monoxide (CO) is a simple molecule composed of one carbon atom and ... Read More Details

5 Inorganic Chemistry MCQs

Boric acid cannot be used in which of the following applications?

  • As an antiseptic in medicine
  • For washing eyes
  • In soda bottles
  • For enamel and glazes
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Correct Answer: C. In soda bottles

Explanation:

Boric acid (H₃BO₃) is a weak, inorganic acid with mild antiseptic, antifungal, and ... Read More Details

6 Inorganic Chemistry MCQs

Which of the following elements can form a tripositive (3⁺) ion?

  • Beryllium
  • Carbon
  • Silicon
  • Aluminium
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Correct Answer: D. Aluminium

Explanation:

Elements in Group 13 of the periodic table, such as aluminium (Al), have ... Read More Details

7 Inorganic Chemistry MCQs

Which of the following elements is different in physical appearance from the others?

  • Arsenic
  • Phosphorus
  • Antimony
  • Bismuth
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Correct Answer: B. Phosphorus

Explanation:

Among the elements listed—arsenic (As), phosphorus (P), antimony (Sb), and bismuth (Bi)—phosphorus stands ... Read More Details

8 Inorganic Chemistry MCQs

Most compounds of nitrogen and phosphorus are of which type?

  • Ionic
  • Covalent
  • Polar
  • All varieties are possible
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Correct Answer: B. Covalent

Explanation:

Nitrogen and phosphorus are non-metallic elements in Group 15 (V group) of the ... Read More Details

9 Inorganic Chemistry MCQs

Why is SO₃ not directly absorbed in water?

  • The reaction is highly exothermic
  • It is insoluble in water
  • It forms dilute acid
  • None of the above
0 Comments
Correct Answer: A. The reaction is highly exothermic

Explanation:

Sulfur trioxide (SO₃) is the anhydride of sulfuric acid (H₂SO₄) and reacts readily ... Read More Details

10 Inorganic Chemistry MCQs

Which of the following compounds produces phosphoric acid when it reacts with water?

  • PCl₅
  • P₂O₃
  • P₂O₅
  • All of the above
0 Comments
Correct Answer: D. All of the above

Explanation:

Phosphoric acid (H₃PO₄) is an important oxyacid of phosphorus. Several phosphorus-containing compounds produce ... Read More Details

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