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23.8k views
in Science by (39.8k points)
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Identify gas A in the following experiment

A. Nitrogen 

B. Hydrogen 

C. Oxygen 

D. Carbon dioxide

2 Answers

+2 votes
by (15.7k points)
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Best answer

Correct answer is B. Hydrogen

Copper will not react with dil. HCl.

Mg is highly reactive with dil. HCl.

Mg + 2Hcl \(\longrightarrow\) H2 + Mgcl2.

A cracking sound is heard as hydrogen burns.

When dil. HCl is added to Fe, then ferrous chloride (FeCl2) and hydrogen gas (H2) will be formed.

2HCl + Fe \(\longrightarrow\) FeCl2 + H2.

+1 vote
by (39.0k points)

Correct option is B. Hydrogen

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