Question

1. Mention the
precaltions to be taken in the
experiment to show that
hydrogen gas is
evolved when metals react with acids.
Mention the expertmental
the expertmental prove dare
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Answer 1

Answer:

Before collecting the hydrogen gas with the help of the apparatus, precautions must be taken in order to ensure that all the air inside the apparatus has been displaced. This is because hydrogen gas reacts explosively with air.