When zinc metal reacts with dilute sulphuric acid, a gas is evolved. Which one is a correct statement about the nature of this gas ?(1) colourless with suffocating odour(2) reddish brown and odourless(3) colourless and sweet smelling(4) colourless and odourless

Correct answer: (4) colourless and odourless

 Explanation: When zinc reacts with dilute hydrochloric acid, it gives zinc chloride and hydrogen gas evolves. Hydrogen is colourless and odourless gas which evolves with bubbles.

The reaction is given by:

$Zn(s) + 2HCl(aq) → ZnCl_2(aq) + H_2(g)$ 

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Updated on: 10-Oct-2022

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