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2 gm of a sample contains mixture of SiO...

2 gm of a sample contains mixture of `SiO_2` and `FE_2O_3`. The sample on very strong heating leave a residue of mass 1.96 gm. The reaction responsible for weight loss is `3Fe_2O_3 rarr 2Fe_3O_4 + 1/2 O_2`
What is the percentage by mass of `SiO_2` in original mixture

A

`10%`

B

`20%`

C

`40%`

D

`50%`

Text Solution

Verified by Experts

The correct Answer is:
C
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