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Question

Four set ups as given here were arranged to identify the gas evolved when dilute sulphuric acid was added to zinc granules.The most appropriate set up is :

(1) I
(2) II
(3) III
(4) IV

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Solution

When zinc reacts with dilute sulphuric acid then it gives zinc sulphate and hydrogen gas will evolve.
Zn(s)+H2SO4(aq)ZnSO4(aq)+H2(g)
So, from the following given setups in setup 4 hydrogen gas will evolve easily as there is proper space for the gas to evolve.

Hence the correct option is 4.

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