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Chemistry · 2026

JEE Main · 28 January 2026, Shift 1 · Q74

Consider the following redox reaction taking place in acidic medium BH_4^-(a q)+ ClO_3^-(a q) → H_2 BO_3^-(a q)+ Cl^-(a q) If the Nernst equation for…

Consider the following redox reaction taking place in acidic medium $$\mathrm{BH}_4^{-}(a q)+\mathrm{ClO}_3^{-}(a q) \longrightarrow \mathrm{H}_2 \mathrm{BO}_3^{-}(a q)+\mathrm{Cl}^{-}(a q) $$ If the Nernst equation for the above balanced reaction is $$\mathrm{E}_{\text {cell }}=\mathrm{E}_{\text {cell }}^{\circ}-\frac{\mathrm{RT}}{\mathrm{nF}} \ln \mathrm{Q}, $$ then the value of n is $\displaystyle \_\_\_\_$ .(Nearest integer)
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JEE Main 2026 Chemistry question, with the answer from NTA’s final answer key. Where our answers come from.