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When a metal is burnt, its weight is inc...

When a metal is burnt, its weight is increased by `24%`. The equivalent weight of the metal wil be:

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The correct Answer is:
40
If mass of metal is 100 g, then mass of metal oxide formed = 120 g
`("Mass of metal")/("Mass of metal oxide") = ("Eq. Wt. Of metal")/("Eq.wt. Of metal oxide")`
`=100/120 = E/(E+ 8)` or `10 E + 80 = 12 E`
or `2E = 80` or E = 40
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