Equal pieces of zinc granules are dropped in four test tubes. Following substances are poured in all the four test tubes. The reaction will be vigorous with- CH3COOH
- HCl
- sodium bicarbonate solution
- lemon juice.
Correct Answer: (b) HCl
Explanation: Strong adds like HCl react vigorously with active metals like Zn form metal salt and evolve H2 gas.
$Zn(s) + HCl(aq) \rightarrow ZnCl_2(aq) + H_2$
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