4 g of oxygen reacts with a metal to give 23.5 g of metal oxide. The equivalent weight of the metal is:

23

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24

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27

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39

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Solution

The correct option is C $39$
Mass of metal oxide $= 23.5 g$
$∴$ Mass of metal $= 23.5 - 4 = 19.5 g$
Equivalent of mass of metal $= \frac{M a s s o f m e t a l}{M a s s o f o x y g e n} \times E q . m a s s o f o x y g e n$
Eq. mass of metal $= \frac{19.5}{4} \times 8 = 39 g$

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