A gas is evolved when a piece of zinc metal is placed in dilute sulphuric acid (H2S04). What is the gas?

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Q: 82 (NDA-II/2013)
A gas is evolved when a piece of zinc metal is placed in dilute sulphuric acid (H2S04). What is the gas?
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question_subject: 

Science

question_exam: 

NDA-II

stats: 

0,29,13,29,3,2,8

keywords: 

{'zinc metal': [0, 0, 0, 1], 'sulphur dioxide': [0, 0, 0, 1], 'gas': [9, 1, 9, 27], 'hydrogen': [0, 0, 1, 3], 'sulphuric acid': [1, 1, 0, 1], 'oxygen': [3, 0, 1, 0], 'h2s04': [0, 0, 0, 2], 'water vapour': [0, 0, 1, 2]}