Question

If an oxide does not form salt when it reacts with acids or bases, it is called

• A. basic
• B. acidic
• C. amphoteric
• D. neutral

Answer 1

The correct option is D

neutral

Explanation of correct option-

• (D) Neutral oxides- Oxides that show neither the properties of acidic oxides nor the basic oxides.
• Example- Water(H₂O), Carbon monoxide(CO), etc.
• These oxides do not form salt when they react with acids or bases.

Explanation of incorrect options-

• Oxides are compounds that are made up of oxygen and one more element.
• For example, Oxygen and Sodium, Oxygen and Carbon, etc.

• (A) Metallic oxides- Oxides of metals are called metallic oxides.
• They are basic oxides and react with water to produce a base that turns red litmus blue.
• Example- Sodium oxide(Na₂O), Potassium oxide(K₂O), etc.

• (B) Non-metallic oxides- Oxides of non-metals are called non-metallic oxides.
• They are acidic oxides and react with water to produce an acid that turns blue litmus red.
• Example- Carbon dioxide(CO₂), Sulphur dioxide(SO₂), etc.

• (C) Amphoteric oxides- Oxides that show the property of acidic oxides as well as basic oxides.
• Example- Zinc oxides(ZnO), Aluminum oxides(Al₂O₃), etc.

Hence, option (D) is the correct answer.