PYQ NEET- Redox Reactions L-6

Question: On balancing the given redox reaction,#

(2023) $$ \mathrm{aCr}_2 \mathrm{O}_7^{2-}+\mathrm{bSO}_3^{2-}(\mathrm{aq})+\mathrm{cH}^{+}(\mathrm{aq}) \rightarrow 2 \mathrm{aCr}^{3+}(\mathrm{aq})+\mathrm{bSO}_4^{2-}(\mathrm{aq})+\frac{\mathrm{c}}{2} \mathrm{H}_2 \mathrm{O}(\mathrm{l}) $$ the coefficients $a, b$ and $c$ are found to be, respectively-

A) $1,3,8$

B) $3,8,1$

C) $1,8,3$

D) 8, 1, 3

Answer: $1,3,8$#