Question

All the methods mentioned below can be used to prevent the food from getting
rancid except:
i. Storing the food in the air-tight containers
ii. Storing the food in refrigerator
iii. Keeping the food in clean and covered containers
iv. Always touching the food with clean hands
a. (i) and (ii)
b. (i) and (iii)
c. (i), (iii) and (iv)
d. (iii) and (iv)

Answer 1

All the methods mentioned below can be used to prevent the food from getting  rancid except d. (iii) Keeping the food in clean and covered containers and (iv) Always touching the food with clean hands.

Explanation:

• Rancidity is development of unpleasant smell from food due to oxidation or hydration of fat by metallic atoms and microbes.
• It is prevented by adding antioxidants to the food, storing the food in air-tight compartment, storing the food in refrigerator and keeping the food away from the sun.
• Simply storing the food in a clean and covered container can lead to rancidity because the nitrogen in atmosphere reacts with food. Touching the food with washed or unwashed hands will lead to rancidity.

Answer 2

Answer:

d. (iii) and (iv)

Explanation:

Rancidity is development of unpleasant smell from food due to oxidation or hydration of fat by metallic atoms and microbes.

It is prevented by adding antioxidants to the food, storing the food in air-tight compartment, storing the food in refrigerator and keeping the food away from the sun.

Simply storing the food in a clean and covered container can lead to rancidity because the nitrogen in atmosphere reacts with food. Touching the food with washed or unwashed hands will lead to rancidity.