Question

Give the reason for the following
(a) Zinc oxide is considered as amphoteric oxide
(b) Non metals in general do not displace hydrogen om dilute acid
c) Metals conduct electricity​

Answer 1

1. Reasons: Zinc oxide can react with both acid and bases, that’s why it is considered as amphoteric oxide.

2. Only more reactive compound can displace less reactive compound. Since, non-metals are less reactive than hydrogen. So, they can’t displace hydrogen from diluted acids.

3. Metals have free electron through which electricity can flow easily. That’s why metal conducts electricity.