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Question

Dilute hydrochloric acid (HCl) reacts with metal to evolve _____ gas along with the formation of corresponding metal salt.


A
oxygen
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B
hydrogen
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C
nitrogen
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D
chlorine
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Solution

The correct option is B hydrogen
Acids react with metals to produce the respective metal salt along with hydrogen gas. The general form of the reaction is given below:

Acid+MetalMetal salt+Hydrogen gas

For example: When hydrochloric acid reacts with zinc, a salt of zinc chloride is produced along with the evolution of hydrogen gas. This can be represented as:

Zinc+Hydrochloric acidZinc chloride+Hydrogen gas
 

Chemistry

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