NEETChemistryS Block ElementsMCQ+4 / −1Which one of the following reactions does NOT belong to "Lassaigne's test"?ANa+X→Δ+NaX\mathrm{Na}+\mathrm{X} \xrightarrow[\Delta]{ }+\mathrm{NaX}Na+XΔ+NaXB2CuO+C→Δ2Cu+CO22 \mathrm{CuO}+\mathrm{C} \xrightarrow[\Delta]{ } 2 \mathrm{Cu}+\mathrm{CO}_22CuO+CΔ2Cu+CO2CNa+C+N⟶ΔNaCN\mathrm{Na}+\mathrm{C}+\mathrm{N} \underset{\Delta}{\longrightarrow} \mathrm{NaCN}Na+C+NΔ⟶NaCND2Na+S⟶ΔNa2 S2 \mathrm{Na}+\mathrm{S} \underset{\Delta}{\longrightarrow} \mathrm{Na}_2 \mathrm{~S}2Na+SΔ⟶Na2 SAttempt in chatShare