• # question_answer When same amount of zinc is treated separately with excess of sulphuric acid and excess of sodium hydroxide solution the ratio of volumes of hydrogen evolved is [CPMT 1991] A) 1 : 1 B) 1 : 2 C) 2 : 1 D) 9 : 4

Solution :

$Zn+{{H}_{2}}S{{O}_{4}}\to ZnS{{O}_{4}}+{{H}_{2}}$ $Zn+2NaOH\to N{{a}_{2}}Zn{{O}_{2}}+{{H}_{2}}$ \ Ratio of volumes of ${{H}_{2}}$ evolved is 1:1.

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