Question

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

• A. 66.67
• B. 16.67
• C. 33.3
• D. 24

Answer 1

The correct option is A 66.67

As metal will be burnt in presence of oxygen. So, equivalent weight of $O^{2-}$ (oxide) is $\frac{16}{2}=8g/eq$

One equivalent of oxygen reacts with one equivalent of metal. Then $x$ grams of metal will react with $8g$ of oxygen.

So, $x=\frac{8}{24}\times 100=33.33g$

So, the correct option is $C$.