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Per NCERT §8.5.4, in trivial nomenclature of disubstituted benzene, the prefix indicating 1,4-positions is which?
Acis
Bpara
Cmeta
Dortho
Answer & Solution
Correct answer: B. para
NCERT §8.5.4: ortho = 1,2; meta = 1,3; para = 1,4.
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