S. No. | Metal | Reaction with dilute HCI |
1. | P | No change |
2. | Q | Temperature of reaction mixture rises. |
3. | R | Reaction is explosive. |
4. | S | Some gas bubbles are seen. |
A) K, Al, Na and Cu
B) Cu, Pb, Na and Al
C) Ag, Al, Na and Pb
D) Cu, Ca, K and AI
Correct Answer: C
Solution :
Silver cannot displace hydrogen from dilute acid. The reaction of aluminium with hydrochloric acid is exothermic. Sodium is highly reactive so, reaction is explosive. Lead is slightly more reactive than hydrogen hence, only some gas bubbles are seen.You need to login to perform this action.
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