1. Tardigrade
  2. Question
  3. Chemistry
  4. Consider the following statements: I. In the trivial system of nomenclature the terms ortho, meta and para are used as prefixes to indicate the relative positions 1,2 ; 1,3 and 1,4 respectively. II. 1,3-dibromobenzene is named as o-dibromobenzene. III. When a benzene ring is attached to an alkane having a functional group, it is considered as parent. Read the given statement and choose the incorrect option.

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Q. Consider the following statements :
I. In the trivial system of nomenclature the terms ortho, meta and para are used as prefixes to indicate the relative positions $1,2 ; 1,3$ and $1,4$ respectively.
II. $1,3$-dibromobenzene is named as $o$-dibromobenzene.
III. When a benzene ring is attached to an alkane having a functional group, it is considered as parent.
Read the given statement and choose the incorrect option.

Organic Chemistry – Some Basic Principles and Techniques

Solution:

Statement II and III are incorrect.
It's correct form are as follows :
II. $1,3$ -dibromobenzene is named as $m$-dibromobenzene
image
III. When a benzene ring is attached to an alkane having a functional group, it is considered as substituent, instead of a parent.
Rest other statement I is correct.