In this type of questions, a statement of assertion 
is followed by a statement of reason
(R). Mark the correct choice as :
Assertion : Non-ideal solutions show deviations from Raoult's law.
Reason : The cause for deviations from Raoult's law lies in the nature of interactions at the molecular level.
Text Solution
Verified by ExpertsA
On mixing two dissimilar substances, their molecular environment changes. Suppose the two components that are mixed to form a non-ideal solution are 
and 
. When 
interactions 
or 
interactions, there is a positive deviation from Raoult's law.
When 
interaction 
or 
interactions, there is a negative deviation from Raoult's law.
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