Which of the following is the IUPAC name of the compound

Which of the following is the IUPAC name of the compound
  1. $\mathrm{o}-$ Bromo $-\mathrm{m}-$ chlorobenzaldehyde
  2. $2-$ Bromo $-5-$ chlorobenzaldehyde
  3. $6-$ Bromo $-3-$ chlorobenzaldehyde
  4. $1-$ Bromo $-4-$ chlorobenzaldehyde

Solution

The compound is a derivative of benzaldehyde. Start numbering C-atoms of benzene nucleus from C-atom bearing CHO group.

Asked in: JEE-TOPICTESTS-CHEMISTRY

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