Explain the process of preparation of olfactory indicators using onion and a clean cloth? I want this answer now immediately plz
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Explain the process of preparation of olfactory indicators using onion and a clean cloth? I want this answer now immediately plz
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an acid solution like hydrochloric acid is added to the doth strip does not destroy the smell of onions. when a basic solution like sodium hydroxide solution is added to doth strip treated with onion extract then the onion smell can not be deleted
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