Question

in which of the following reactions can we hear a pop sound with burning match stick.
a.sodium+oxygen?
b.magnesium+water?
c.carbon dioxide+water
d.sodium+hydrochloric acid

Answer 1

Answer:

d.

sodium reacts with hydrochloric acid and gives sodium chloride and hydrogen gas.

and only hydrogen gas can make pop sound.

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Answer 2

Answer:

Option D

Explanation:

we can hear a pop sound only when hydrogen gas is released and when sodium and hydrochloric acid react then hydrogen gas is released and we can hear a pop sound when match stick is brought near to it.

Na+HCl=NaCl +H2

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