Question

use and write the correct option in each of the following questions (MCQ's): Observe following experimental set-up carefully : H Dllute NaOH Cuso Dilute HCI Dilute HCI -Zinc Zinc Na2CO, Neco, NaHCO₃ IV I II III The set-up that would result in a rapid evolution of gas would be: (A) I and II (B) II and IV (C) I and III (D) III and IV 3​

Answer 1

Explanation:

Zinc reacts with dil. HCl to give hydrogen gas which is collected above water as it is the lightest gas while other metals are unreactive towards dil. HCl as they are inert present below the hydrogen in the reactivity series.

Zn(s)+HCl(dil.)→ZnCl

2

(aq)+H

2

(g)

Answer 2

Answer:

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