CBSE Class 12 Chemistry 2019 Outside Delhi Set 1 Solved Paper

Question : 4 of 9

Marks: +1, -0

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)

\text{RBC}

looses water in saline water and absorb water in distilled water due to osmosis.

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