Question

Name two metals which can displace hydrogen from dilute acid and two metals which cannot do so

Answer 1

Iron and aluminium will displace hydrogen from dilute acids as they more reactive then hydrogen. Mercury and copper cannot displace hydrogen from dilute acids as they are less reactive than hydrogen.

Hope it Helps.
Cheers.

Answer 2

$\mathfrak{\huge{\red{\underline{\underline{Answer:-}}}}}$✨✨✨✨✨✨✨✨

Metals that are more reactive than hydrogen displace it from dilute acids.

For example: sodium and potassium.

Metals that are less reactive than hydrogen do not displace it.

For example: copper and silver.