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Per NCERT §8.5.2 rule 4, when there are TWO identical substituents on the parent chain, the prefix used is which?
Aco
Bbi
Cmono
Ddi
Answer & Solution
Correct answer: D. di
NCERT §8.5.2 rule 4: di for 2, tri for 3, tetra for 4, etc. These prefixes are ignored in alphabetical ordering.
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