correct the statement if it is wrong a)indicators show different colours and acidic and basic solution b)Sodium Hydroxide turns blue Litmus red c)tooth decay is caused by the presence of base
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option a) is correct.
b) Blue litmus remains blue in sodium hydroxide (NaOH) because it is a base and blue litmus remains blue in this solution.
c) tooth decay is caused by the presence of acid. Tooth decay starts when the pH of acid formed in the mouth falls below 5.5
b) Blue litmus remains blue in sodium hydroxide (NaOH) because it is a base and blue litmus remains blue in this solution.
c) tooth decay is caused by the presence of acid. Tooth decay starts when the pH of acid formed in the mouth falls below 5.5
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