Question
State the common characteristics of acids and bases.

Answer

Characteristics of acids :
(1) Acids are sour in taste.
(2) It turns wet blue litmus paper to red,
(3) It reacts with base and forms salt and water.
(4) It reacts with metal, liberating $H _2$ gas.
Characteristics of bases :
(1) Bases are bitter in taste.
(2) It turns wet red litmus paper to blue.
(3) It reacts with acid and forms salt and water.

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