The best example of ethylene absorber in packaging is -

Correct option is C

· Correct answer: (c) Potassium permanganate
· Potassium permanganate is commonly used as an ethylene absorber in packaging to slow down the ripening process of fruits and vegetables. It effectively reduces ethylene levels and extends shelf life.
Other options:
· (a) Ferrous oxide: While ferrous oxide has other uses, it is not typically used for ethylene absorption.
· (b) Hydrated lime: Hydrated lime is used in other agricultural processes but not as an ethylene absorber.
· (d) Activated charcoal: Activated charcoal can adsorb certain gases but is not as effective as potassium permanganate for ethylene.