→b) H2O2/OH-a) B2H6/THFA→∆Conc. H2SO4B. The major product B in the process is

Hyboration oxidation involves addition of water to alkene by  anti markonikov's ruleCH3-CH2-CH=CH2→HBOCH3-CH2-CH2-CH2OH(A)A→B is acidic dehydration of alcohols, it proceeds via carbocation formation.CH3CH2CH2CH2OH→-H2OH+/∆CH3-CH2-CH2-C+H2⇌1,2 H-shiftCH3-CH2-C+H-CH3(more stable)→H+CH3-CH=CH-CH3(Zaisev product)