The percentage of sulfur in $S O_{2}$ is _ and ____ in $S O_{3}$ .

40%, 50%

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30%,40%

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50%, 40%

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30%, 60%

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Solution

The correct option is C 50%, 40%
Atomic mass of S $= 32$ gm,
Atomic mass of $O = 16$ gm
percentage of sulphur in $S O_{2} = \frac{32}{64} = 50$ %.
percentage of sulphur in $S O_{3} = 32 \times 100 / 80 = 40$ %

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The marks obtained by $40$ students of a class are given below :
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The percentage of sulfur in SO2 is _____ and ________ in SO3.

The correct option is C 50%, 40%Atomic mass of S =32 gm,Atomic mass of O=16gmpercentage of sulphur in SO2=3264=50%.percentage of sulphur in SO3=32×100/80=40%

The percentage of sulfur in $S O_{2}$ is _ and ____ in $S O_{3}$ .

The correct option is C 50%, 40%
Atomic mass of S $= 32$ gm,
Atomic mass of $O = 16$ gm
percentage of sulphur in $S O_{2} = \frac{32}{64} = 50$ %.
percentage of sulphur in $S O_{3} = 32 \times 100 / 80 = 40$ %