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A substance that absorbs moisture from the air without changing its physical state is correctly described as:
Adeliquescent
Banhydrous
Chygroscopic
Dsupersaturated
Answer & Solution
Correct answer: C. hygroscopic
1. A substance absorbing atmospheric moisture without changing its physical state is hygroscopic.
2. A deliquescent substance also absorbs moisture but goes further and dissolves, changing its state, so it is ruled out.
3. Hygroscopic substances act as drying agents, for example silica gel.
4. Therefore the correct description is hygroscopic.
_Source: Samacheer Kalvi (TN SCERT) Class 10 Science, Unit 9 Solutions "Hygroscopy", p.138_
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