CBSE Class 12 Chemistry 2019 Outside Delhi Set 1 Solved Paper

Question : 4

Total: 9

SECTION - B

Give reasons:
(a) Cooking is faster in pressure cooker than in cooking pan.
(b) Red Blood Cells (RBC) shrink when placed in saline water but swell in distilled water.

Solution:

(a) Due to increase of pressure in cooker, boiling point of water increases.
(b) RBC looses water in saline water and absorb water in distilled water due to osmosis.

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