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Chemistry · 2023 · 2 marks
CBSE 2023 · Region 3 · Set 1 · Q25
Give reasons for the following: 2 (a) Aquatic animals are more comfortable in cold water in comparison to warm water. (b) Sprinkling of salt helps in…
Give reasons for the following: $\displaystyle 2$
(a)
Aquatic animals are more comfortable in cold water in comparison to warm water.
(b)
Sprinkling of salt helps in clearing the snow-covered roads in hilly areas.
Marking-scheme solution
(a) Due to more solubility of oxygen in cold water than in warm water.
(b) Sprinkling of salt causes depression in freezing point and snow easily melts.
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CBSE Class 12 Chemistry past-paper question from the 2023 board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.