Boron and Carbon FamilyHard
Question
Hydrocarbon (A) of molecular formula C4H6 gives white ppt with Tollen′s reagent. (B) is the isomer of (A). One mole of (B) picks up one mole of bromine to form 1,4-dibromo-2-butene. Thus (A) and (B) are :-
Options
A.CH3 - C ≡ C - CH3 and CH3 - CH = C = CH2
B.CH3 - CH2 - C ≡ CH and 
CH2
CH2C.CH3 - C ≡ C - CH3 and 
D.CH3 - CH2 - C ≡ CH and CH2 = CH - CH = CH2
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