When the same amount of zinc is treated separated with excess of sulphuric acid and excess of sodium hydroxide the ratio of volume of hydrogen evolved is
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a
1 : 1
b
1 : 2
c
2 : 1
d
9 : 4
answer is A.
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Detailed Solution
In both cases, the same volume of hydrogen is evolved for the same amount of zinc reacted.Zn + H2SO4 → ZnSO4 + H2 ↑Zn + NaOH → Na2ZnO2 + H2↑