1.

When a metal is burnt in oxygen, its weight is increased by 24 per cent. The equivalent weight of the metal will be

Answer»

120
80
60
40

Solution :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`
`"or2 E = 80orE = 40"`


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