Question

Red hot carbon will remove oxygen from the oxides XO and YO but not from ZO. Y will remove oxygen from XO. Use this evidence to deduce the order of activity of the three metals X, Y and Z in order of reactivity.

• A. X, Y, Z
• B. Z, Y, X
• C. Y, X, Z
• D. Z, X, Y

Answer 1

The correct option is B Z, Y, X

Carbon is a powerful reducing agent from X and Y but not from Z. Hence, Z is the most reactive metal.

Also, Y is more reactive than X.

Therefore, reactivity series : Z > Y > X.