Question

​ which of the following substance helps in getting rid of smell of onions? ​a) HCl b) KCl c) NaOH d) CH3​COOH Also give the reason for the answer .

Answer 1

Onions contains acids that smell. So, as NaOH is a base it can be used to get rid of smell of onions

Answer 2

 When a basic solution like sodium hydroxide solution is added to a cloth stripe treated with onions, then onion smell cannot be detected