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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:

A

120

B

80

C

60

D

40

Text Solution

Verified by Experts

The correct Answer is:
D
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 "10E+80=12E`
`"or 2 E = 80 or E = 40"`
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