Which of the following reactions is the metal displacement reaction?

C r_{2} O_{3} + 2 A l Δ - \to A l_{2} O_{3} + 2 C r

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

F e + 2 H C l \to F e C l_{2} + H_{2} ↑

No worries! We‘ve got your back. Try BYJU‘S free classes today!

2 P b (N O_{3})_{2} \to 2 P b O + 4 N O_{2} + O_{2} ↑

No worries! We‘ve got your back. Try BYJU‘S free classes today!

2 K C l O_{3} Δ - \to 2 K C l + 3 O_{2}

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Open in App

Solution

The correct option is A $C r_{2} O_{3} + 2 A l Δ - \to A l_{2} O_{3} + 2 C r$
More electropositive element displaces less electropositive element.
$C r_{2} O_{3} + 2 A l Δ - \to A l_{2} O_{3} + 2 C r$

Reaction (a) and (d) are decomposition reaction.

Reaction (c) is a single displacement reaction but it does not displace a metal.
Hence, option (b) is the correct answer.

Suggest Corrections

Similar questions

Which of the following is non-metal displacement reaction ?

Z n + C u S O_{4} (a q) \to

Which of the following reaction is an example of a displacement reaction involving non-metals?

Join BYJU'S Learning Program