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.

Question

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. (A) Only I (B) Only II (C) Both II and III (D) Both I and III

Tardigrade Admin · Accepted Answer

Statement II and III are incorrect. It's correct form are as follows: II. 1,3 -dibromobenzene is named as m-dibromobenzene <img class="img-fluid question-image" alt="image" src="https://cdn.tardigrade.in/img/question/chemistry/eb7aedbe0a31a534e6e1b904951fa309-.png" /> 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.

Only I

Only II

Both II and III

Both I and III

Statement II and III are incorrect. It's correct form are as follows : II. 1,3 -dibromobenzene is named as m-dibromobenzene 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.

Statement II and III are incorrect.
It's correct form are as follows :
II. $1, 3$ -dibromobenzene is named as $m$ -dibromobenzene

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.