Question

A student added dil. HC1 to a test tube containing zinc granules and made the following

observations:

I. The zinc surface becomes dull and black.

II. A gas evolves which bums with a pop sound.

III. The solution is colourless.


The correct observations are

(a) I and II
(b) I and III
(c) II and III
(d) I, II and III​

Answer 1

Answer:

(c) II and III

Explanation:

When zinc granules are added to dilute hydrochloric acid, then zinc chloride is formed along the evolution of hydrogen gas .

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