Q126 / 270 · NDA 2014 (Phase 2) · General Ability

Consider the following reaction : $x \mathrm{As}_2 \mathrm{~S}_3+y \mathrm{O}_2 \rightarrow z \mathrm{As}_2 \mathrm{O}_3+w \mathrm{SO}_2$ What is $y$ (the coefficient for $\mathrm{O}_2$ ) when this equation is balanced using whole number coefficients?

A
$5$
B
$7$
Correct answer
C
$9$
D
$11$

Solution

The correct answer is option (C)

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

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