Which of the following acid does not react with metals?
A
Sulphuric acid
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B
Phosphoric acid
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C
Carbonic acid
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D
Nitric acid
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Solution
The correct option is D Carbonic acid Carbonic acid is a weak acid so it does not react with metals. It forms two kind of salts the carbonates and bicarbonates. Metal carbonates are formed by reaction of strong base with carbon dioxide. 2NaOH+CO2→Na2CO3+H2O