What is an effect of adding sodium hydroxide solution to these all factory indicators?
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Some substance such as vanilla, onion and clove, when odour changes in the presence of Acid or Base are known as Olfactory indicators.
When dilute NaOH is sprayed on cloth strip treated with clove oil, then the smell of clove oil cannot be detected. This indicate that the Base cab remove the odour of olfactory indicator.
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