4. Among the following, the substance with greater lowering of vapour pressure is [ ]
a) 0.1 m urea b) 0.1 m glucose c) 0.1 m sucrose d) Equal in all cases
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Among the following, the substance with greatest lowering of vapour pressure is: (d) Equal in all cases.
- All the given compounds, i.e., urea,glucose and sucrose are covalent compounds.
- They do not dissociate in water to form electrolytic solution.
- So the no of molecules will remain same in all these cases.
- Hence all of them will have same lowering of vapour pressure.
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