Which one of vanilla club oil and onions are olfactory indicators?
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An Olfactory indicator is defined as a substance whose smell varies when it is mixed with an acidic or basic solution.Such substances can be usedin the laboratory to test whether a solution is a base or an acid, and this process is called olfactory titration. All onion,clove oil and vanilla extract are examples.
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vanilla and onion are olfactory indicators!!!!!!
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