The products obtained when chlorine gas reacts with cold and dilute aqueous $\mathrm{NaOH}$ are

• A

  ${\mathrm{ClO}}_2^{-}$ and ${\mathrm{ClO}}_3^{-}$
• Correct answer
  B

  ${\mathrm{Cl}}^{-}$ and ${\mathrm{ClO}}^{-}$
• C

  ${\mathrm{Cl}}^{-}$ and ${\mathrm{ClO}}_2^{-}$
• D

  ${\mathrm{ClO}}^{-}$ and ${\mathrm{ClO}}_3^{-}$

Hence, the correct answer is option: 'B'.