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1 Inorganic Chemistry MCQs

In a diaphragm cell, hydrogen is discharged by the reduction of ?

  • Water
  • Hydrochloric acid (HCl)
  • Sodium ion (Na⁺)
  • Sodium chloride (NaCl)
0 Comments
Correct Answer: A. Water

Explanation:

The diaphragm cell is an electrolytic cell used mainly for the electrolysis of ... Read More Details

2 Inorganic Chemistry MCQs

Gypsum is applied to the soil as a source of ?

  • Calcium (Ca) and Phosphorus (P)
  • Sulphur (S) and Phosphorus (P)
  • Calcium (Ca) and Sulphur (S)
  • We could not apply
0 Comments
Correct Answer: C. Calcium (Ca) and Sulphur (S)

Explanation:

Gypsum, chemically known as calcium sulphate dihydrate (CaSO₄·2H₂O), is an important mineral used ... Read More Details

3 Inorganic Chemistry MCQs

Which one of the following alkali metals forms only a normal oxide when it reacts with oxygen (O₂)?

  • Lithium
  • Sodium
  • Potassium
  • Rubidium
0 Comments
Correct Answer: A. Lithium

Explanation:

Among the alkali metals, the type of oxide formed when reacting with oxygen ... Read More Details

4 Inorganic Chemistry MCQs

Which one of the following pairs shows a diagonal relationship in the periodic table?

  • Sodium and Lithium
  • Lithium and Magnesium
  • Lithium and Beryllium
  • Boron and Beryllium
0 Comments
Correct Answer: B. Lithium and Magnesium

Explanation:

In the periodic table, a diagonal relationship refers to the similarity in chemical ... Read More Details

5 Inorganic Chemistry MCQs

Sodium is not found in the +2 oxidation state because of its ?

  • High first ionization potential
  • High second ionization potential
  • High ionic radius
  • High electronegativity
0 Comments
Correct Answer: B. High second ionization potential

Explanation:

Sodium (Na) belongs to Group 1 (alkali metals) of the periodic table and ... Read More Details

6 Inorganic Chemistry MCQs

Magnesium metal does not burn in a vessel containing ?

  • Nitrogen (N₂)
  • Oxygen (O₂)
  • Nitrogen and Oxygen (N₂ and O₂)
  • Neon (Ne)
0 Comments
Correct Answer: D. Neon (Ne)

Explanation:

Magnesium (Mg) is a highly reactive metal that readily combines with several nonmetals ... Read More Details

7 Inorganic Chemistry MCQs

Which of the following elements can form complexes?

  • Sodium (Na)
  • Chromium (Cr)
  • Lithium (Li)
  • Potassium (K)
0 Comments
Correct Answer: B. Chromium (Cr)

Explanation:

Complex formation is a characteristic property of transition elements. These elements have partially ... Read More Details

8 Inorganic Chemistry MCQs

What is the purpose of adding 2% gypsum to cement?

  • Triggers hydration
  • Triggers hydrolysis
  • Prevents rapid hardening
  • All of the above
0 Comments
Correct Answer: C. Prevents rapid hardening

Explanation:

Cement is a fine inorganic material that, when mixed with water, forms a ... Read More Details

9 Organic Chemistry MCQs

How many benzene rings are present in the fused polycyclic compound phenanthrene?

  • Two
  • Three
  • Four
  • Five
0 Comments
Correct Answer: B. Three

Explanation:

Phenanthrene is a polycyclic aromatic hydrocarbon (PAH) composed of three fused benzene rings ... Read More Details

10 Organic Chemistry MCQs

How many electrons in benzene (C₆H₆) form the delocalized π-electron cloud?

  • 3
  • 4
  • 6
  • 8
0 Comments
Correct Answer: C. 6

Explanation:

Benzene (C₆H₆) is a planar cyclic hydrocarbon consisting of six carbon atoms arranged ... Read More Details

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