The hydrocarbon with seven carbon atoms containing a neopentyl and a vinyl group is :

The distillation technique most suited for separating glycerol from spent-lye in the soap industry is :

The absolute configuration of



is :

In Carius method of estimation of halogens, 250 mg of an organic compound gave 141 mg of AgBr. The percentage of bromine in the compound is: (at. Mass Ag = 108; Br = 80)