Question

If an equivalent weight of an element is $32$, then the percentage of oxygen in its oxide is :

• A. $16$
• B. $40$
• C. $32$
• D. $20$

Answer 1

Answer: (D)

$20$

If an equivalent weight of an element is $32$, then it will combine with $8$ g of oxygen to form metal oxide (from the definition of equivalent weight).
So, % of oxygen $=8\times \frac{100}{40}=20$