y^(CH_(2)Cl)

underset((P))(CH_(3)Cl)" "underset((Q))(CH_(3)CH_(2)Cl)" "underset((R))(CH_(3)CH_(2)CH_(2)Cl)" "underset((S))(CH_(3)-overset(Cl)overset(|)CH-CH_(3))

Arrange the following halides in the decreasing order of S_(N^(1)) reactivity : underset((I))(CH_(3)CH_(2)CH_(2)Cl), underset((II)) (CH_(2)=CHCH(Cl)CH_(3)), underset((III))(CH_(3)CH_(2)CH(Cl)CH_(3))

Arrange the following compounds in decreasing order of their boiling points (i) CH_(3)Cl (ii) CH_(3)CH_(2)Cl (iii) CH_(3)CH_(2)CH_(2)Cl (iv) CH_(3)CH_(2)CH_(2)CH_(2)Cl

The reactivities of CH_(3)Cl, CH_(3)CH_(2)CH_(2)Cl and C_(6)H_(5)Cl are in the order

PCl_(5)+SO_(2)rarrX+Y CH_(3)CH_(2)OH+X rarr CH_(3)CH_(2)Cl The compound X is

CH_(3)CH_(2)-Cl CH_(2)=CH-Cl Correct statement for A and B: