Question:
In which of the following boron and boron related substances are not correctly matched with the application shown against it?
In which of the following boron and boron related substances are not correctly matched with the application shown against it?
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NCERT Facts:
Boron fibres \(\rightarrow\) Aerospace materials
Borax \(\rightarrow\) Flux
Boric Acid \(\rightarrow\) Mild antiseptic
Metal Borides \(\rightarrow\) Nuclear shielding
Updated On: Jun 17, 2026
- Boron fibres -- manufacture of glass wool
- Metal borides -- protective shields in nuclear industry
- Borax -- flux for soldering metals
- Boric acid -- mild antiseptic
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The Correct Option is A
Solution and Explanation
Concept:
Boron and its compounds have several important industrial applications. Questions from p-block elements often test direct NCERT facts regarding uses of boron compounds.
Step 1: Examine Boron fibres. Boron fibres are extremely strong and lightweight materials. They are used in:
• Aerospace industry
• Aircraft structures
• High-strength composite materials
They are not used in the manufacture of glass wool. Therefore this match is incorrect.
Step 2: Examine Metal Borides. Metal borides possess excellent neutron absorbing capacity. Hence they are used as: \[ \boxed{\text{Protective shields in nuclear industry}} \] This match is correct.
Step 3: Examine Borax. Borax is widely used as: \[ \boxed{\text{Flux in soldering and welding}} \] It removes oxide impurities from metal surfaces. Thus the match is correct.
Step 4: Examine Boric Acid. Boric acid is a weak acid possessing antiseptic properties. It is used in:
• Eye lotions
• Mild antiseptic preparations
• Pharmaceutical formulations
Hence this match is correct.
Step 5: Final Conclusion. Only the first pair is incorrectly matched. \[ \boxed{\text{Option (A)}} \]
Step 1: Examine Boron fibres. Boron fibres are extremely strong and lightweight materials. They are used in:
• Aerospace industry
• Aircraft structures
• High-strength composite materials
They are not used in the manufacture of glass wool. Therefore this match is incorrect.
Step 2: Examine Metal Borides. Metal borides possess excellent neutron absorbing capacity. Hence they are used as: \[ \boxed{\text{Protective shields in nuclear industry}} \] This match is correct.
Step 3: Examine Borax. Borax is widely used as: \[ \boxed{\text{Flux in soldering and welding}} \] It removes oxide impurities from metal surfaces. Thus the match is correct.
Step 4: Examine Boric Acid. Boric acid is a weak acid possessing antiseptic properties. It is used in:
• Eye lotions
• Mild antiseptic preparations
• Pharmaceutical formulations
Hence this match is correct.
Step 5: Final Conclusion. Only the first pair is incorrectly matched. \[ \boxed{\text{Option (A)}} \]
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