All the following can liberate hydrogen with alkali except
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a
Al
b
Zn
c
Be
d
Fe
answer is D.
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Detailed Solution
Be, Al, Zn are amphoteric metals. They not only liberate hydrogen gas with acids but also liberate hydrogen gas with alkalies.Be→NaOHNa2BeO2+H2;Zn→NaOHNa2ZnO2+H2;Al→NaOHNaAlO2+H2;‘Fe’ cannot react with alkalies.