Question

Explain the process of preparation of olfactory indicator using onion and a clean cloth.
​

Answer 1

Answer:

olfactory indicators are prepared by taking onion juice and a piece of cloth and dipping the cloth in the juice . Explanation: when this cloth is dipped in a base like NAOH the characteristic smell of onion is not detected while when the cloth is dipped in an acid like HCL the characteristic smell of onion is detected.Nov 6,

Explanation:

please mark Me Aisa brilliant