Fruits and Vegetables Processing - Food Products Technology - Life Sciences Previous Year Questions

Identify the correct statements from the following with respect to improvement of shelf-life of fruits and vegetables.
P: It should be cooled immediately to slow down the respiration process
Q: The air of the store chamber should pass through charcoal to absorb the ethylene produced during the ripening process
R: It should be treated immediately with silver nitrate and cobalt chloride
S: It should be treated with the low concentration of biotin and nicotinic acid for prolonged preservation