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NCERT Class XII Chemistry
Chapter - Biomolecules
Questions with Solutions

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Question : 26
Total: 33
Intext Question
Glucose or sucrose are soluble in water, but cyclohexane or benzene (simple six membered ring compounds) are insoluble in water. Explain.
Solution:  
Glucose or sucrose contain several hydroxyl groups in their molecules which form hydrogen bonding with water molecules due to which they dissolve in water. On the other hand compounds like benzene or cyclohexane cannot form hydrogen bonds with water molecules, so they are insoluble in water.
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