p -Block elements - ll — Chemistry STD 12 Science — Question
Gujarat BoardEnglish MediumSTD 12 ScienceChemistryp -Block elements - ll1 Mark
MCQ
The chemical used for cooling in refrigeration is
A
$C{O_2}$
B
$N{H_4}OH$
C
$N{H_4}Cl$
✓
Liquid $N{H_3}$
✓
Answer
Correct option: D.
Liquid $N{H_3}$
d (d)$N{H_3}$ is highly volatile compound. When vapourized, liquid ammonia causes intense cooling. Hence used as a coolant in ice factories and cold storages.
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