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Which of the following when reacts with NaOH liberates a flammable gas ?
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a
Fe
b
SiO2
c
SO2
d
Zn
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Correct option is D
Zn when reacts with NaOH liberates H2 gas which is a flammable gas.Zn + 2OH- →ZnO2-2 + H2Talk to our academic expert!
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