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1 Inorganic Chemistry MCQs

One of the outstanding features of boron is its ability to form ?

  • Molecular addition compounds
  • Molecular crystals
  • Semiconductors
  • Ionic compounds
0 Comments
Correct Answer: A. Molecular addition compounds

Explanation:

Boron, the first element of group 13 in the periodic table, is a ... Read More Details

2 Inorganic Chemistry MCQs

Borax is a white crystalline solid. It is ?

  • More soluble in cold water
  • More soluble in hot water
  • Insoluble in water
  • Soluble only in organic solvents
0 Comments
Correct Answer: B. More soluble in hot water

Explanation:

Borax, also known as sodium tetraborate decahydrate (Na₂B₄O₇·10H₂O), is a white crystalline solid ... Read More Details

3 Inorganic Chemistry MCQs

What is the special feature of borate glass?

  • Heat resistant
  • Low melting
  • Used to prepare chemical garden
  • Green in colour
0 Comments
Correct Answer: A. Heat resistant

Explanation:

Borate glass is a type of glass in which boron trioxide (B₂O₃) is ... Read More Details

4 Inorganic Chemistry MCQs

What type of oxide is aluminium oxide (Al₂O₃)?

  • Acidic oxide
  • Basic oxide
  • Amphoteric oxide
  • It does not exist
0 Comments
Correct Answer: C. Amphoteric oxide

Explanation:

Aluminium oxide (Al₂O₃) is an example of an amphoteric oxide, which means it ... Read More Details

5 Inorganic Chemistry MCQs

Which electronic configuration corresponds to an element of Group IIIA?

  • 1s² 2s² 2p³
  • 1s² 2s² 2p⁶ 3s² 3p¹
  • 1s² 2s² 2p⁴
  • 1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d¹
0 Comments
Correct Answer: B. 1s² 2s² 2p⁶ 3s² 3p¹

Explanation:

Elements of Group IIIA (Group 13) in the periodic table include boron (B), ... Read More Details

6 Inorganic Chemistry MCQs

In the network of silica (SiO₂), each silicon atom is surrounded by __________ oxygen atoms.

  • 4
  • 2
  • 1
  • 6
0 Comments
Correct Answer: A. 4

Explanation:

Silica (SiO₂), also called silicon dioxide, is a major constituent of the Earth’s ... Read More Details

7 Inorganic Chemistry MCQs

Orthoboric acid is 2.6% soluble in water at 40°C and __________ at 107°C.

  • 26%
  • 27%
  • 37%
  • Less than 2.6%
0 Comments
Correct Answer: C. 37%

Explanation:

Orthoboric acid (H₃BO₃), commonly known as boric acid, is a weak, crystalline compound ... Read More Details

8 Inorganic Chemistry MCQs

Aluminium is used __________ because it reacts with oxygen and nitrogen.

  • As a nitrometer
  • To remove air bubbles from molten metal
  • To make alloys
  • As an insulator
0 Comments
Correct Answer: B. To remove air bubbles from molten metal

Explanation:

Aluminium (Al) is a highly reactive metal that forms a protective oxide layer ... Read More Details

9 Organic Chemistry MCQs

Silicon differs from silica by a group of ?

  • CH₃
  • OH
  • OCH₃
  • O₂
0 Comments
Correct Answer: B. OH

Explanation:

Silicon (Si) and silica (SiO₂) are chemically related but structurally distinct substances. The ... Read More Details

10 Inorganic Chemistry MCQs

Boron is a non-metal, while the other elements of Group IIIA (Group 13) are metals. This is because ?

  • It has a small atomic size
  • It has a high nuclear charge
  • It forms molecular addition compounds
  • All of the above
0 Comments
Correct Answer: D. All of the above

Explanation:

Boron (B) is the first element of Group 13 (IIIA) in the periodic ... Read More Details

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