which characteristics of a chemical change do u observe when dilute sulphuric acid is added to zinc granules in a conical flask?

When dil. sulphuric acid is added to zinc granules, zinc sulphate is formed and hydrogen gas is liberated. 
Zn  +  dil. H2SO4        ZnSO4    +   H2 (g)         suphuric acid      zinc sulphate

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liberation of hydrogen gas
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zn +h2so4=znso4+h2
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