1.CH3CH2OH→CH3CH2Cl→CH2=CH2CH_3CH_2OH \rightarrow CH_3CH_2Cl \rightarrow CH_2=CH_2CH3CH2OH→CH3CH2Cl→CH2=CH2A and B in this sequence of reactions are:a.KOH(aq)KOH(aq)KOH(aq) and PCl5PCl_5PCl5b.PCl5PCl_5PCl5 and KOH(aq)KOH(aq)KOH(aq)c.Cl2Cl_2Cl2 and KOH(alc)KOH(alc)KOH(alc)d.PCl5PCl_5PCl5 and KOH(alc)KOH(alc)KOH(alc)Login to continueOnly logged in users canattempt or see the solution.