Question

The figure represents the reactivity of metals then which of the following are correct?

(i) Sodium is more reactive than magnesium.

(ii) Magnesium ad aluminium metals displace lead.

(iii) Magnesium and aluminium metals displace calcium.

(iv) Iron and tin metals can displace magnesium.

(v) Most reactive metal is sodium.

(vi) Gold is least reactive.

(vii) Calcium and zinc metals displace iron.

• A. (i),(ii), (v),(vi)
• B. (ii),(iii), (vi),(vii)
• C. (i),(ii), (vi),(vii)
• D. (ii),(v), (vi),(vii)

Answer 1

The correct option is C

(i),(ii), (vi),(vii)

The reactivity decreases down the line i.e. metal at the top is more reactive than the metal at bottom. In displacement reaction, more reactive metal displaces the less reactive metal. So only the following statements are true.

(a) Sodium in more reactive than magnesium.

(b) Magnesium and aluminium metals displace lead.

(c) Gold is least reactive.

(d) Calcium and zinc metals displace iron.