Metal A dipped in a salt of metal B displaces B from the solution. This shows that
(a) A is more reactive than B.
(b) B is more reactive than A.
(c) both A and B are equally reactive.
(d) no such conclusion can be drawn.

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Solution

(a) A is more reactive than B
More reactive metal (A) can displace a less reactive metal (B) from its salt solutions. More reactive metals are placed above comparatively less reactive metals in the reactivity series and can displace metals below them in the reactivity series.

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Similar questions

Q. If A is more reactive than B, which of the following is true?

(a) A will replace B from a salt of B.
(b) B will replace A from a salt of A.
(c) Both can displace each other from their salts.
(d) Both cannot displace each other from their salts.

Q. I know that if A is more reactive than B
then- metal A + salt of metal B = metal B + salt of metal A
What would happen if B is more reactive than A ?
And how ?

Q. A and B are two different metals.
A + salt of B

\to

B+ salt of A
So, metal A is metal B.

In the given reaction, $M_{A}$ is a metal A and $M_{B}$ is a metal B. Choose the correct options regarding the reactivities of $M_{A}$ and $M_{B}$ .
$M_{A} + S a l t o f M_{B}$
$\to M_{B} + S a l t o f M_{A}$

Given two test tubes, A and B, A is CuSO

_{4}

solution (blue) and B is FeSO

_{4}

solution (green). When few iron nails are dipped in both the solutions, it is observed that the colour of solution A changes to green but the colour of solution B remains the same. This is because:

(More than one option can be correct)

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Metal A dipped in a salt of metal B displaces B from the solution. This shows that (a) A is more reactive than B. (b) B is more reactive than A. (c) both A and B are equally reactive. (d) no such conclusion can be drawn.

(a) A is more reactive than B More reactive metal (A) can displace a less reactive metal (B) from its salt solutions. More reactive metals are placed above comparatively less reactive metals in the reactivity series and can displace metals below them in the reactivity series.

Metal A dipped in a salt of metal B displaces B from the solution. This shows that
(a) A is more reactive than B.
(b) B is more reactive than A.
(c) both A and B are equally reactive.
(d) no such conclusion can be drawn.

(a) A is more reactive than B
More reactive metal (A) can displace a less reactive metal (B) from its salt solutions. More reactive metals are placed above comparatively less reactive metals in the reactivity series and can displace metals below them in the reactivity series.