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Question
Dilute hydrochloric acid (HCl) reacts with metals to evolve _____ gas along with the formation of corresponding metal salt.
Options:
A .  oxygen
B .  hydrogen
C .  nitrogen
D .  chlorine
Answer: Option B
:
B
Acidsreact with metals to producetherespective metalsaltalong withhydrogen gas. The general form of the reaction is given below:
Acid (aq)+Metal (s)Salt(aq)+Hydrogen (g)
For example:
When hydrochloric acid reacts with zinc, itproduceszinc chloride along with the evolution ofhydrogen gas.
The chemical reaction is given below:
2HCl (aq)+Zn (s)ZnCl2(aq)+H2(g)

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