Question

When food containing fat or oil is not used and left for a long time, its smell and taste changes. Name the process and state factors responsible for this change. List two methods to prevent or slow down
the above change.


CBSE Class X Science SA 2 (3 Marks)

Answer 1

The process for this is Rancidity .

Air,moisture and chemicals are responsible for this change.

Two methods to slow down this:

(i)By keeping the food in air tight container.

(ii)By lowering the temperature.

(iii)By vacuum packing

(iv)By filling with nitrogen.

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Answer 2

Answer:

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