- AWater and ethyl alcohol
- BWater and sulphuric acid
- ✓Water and amyl alcohol
- DWater and liquor ammonia
$(i)$ The temperature must remain constant throughout the experiment.
$(ii)$ The two liquids (solvents) should be mutually immiscible.
$(iii)$ The amount of the solute added should be small i.e. the solution should be diluted.
$(iv)$ The solute must have the same molecular state in both the solvents. as all these conditions are satisfied by water and Amyl alcohol thus the correct answer is $B$.
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Assertion $(A):$ Gabriel phthalimide synthesis cannot be used to prepare aromatic primary amines.
Reason $(R) :$ Aryl halides do not undergo nucleophilic substitution reaction.
In the light of the above statements, choose the correct answer form the options given below.
$(I)$ $S_2O_4^{2-}$ $(II)$ $S_2O_5^{2-}$ $(III)$ $S_2O_6^{2-}$