Answer:

did you meant balanced or unbalanced?

if you meant balnced, then it’s d. Others seems unbalanced to me I guess?

Verified answer

Answer:

Except (d) x=2 y=1 z=2 ; others are unbalanced.

Explanation:

When we put these values the given equation becomes balanced and the no. of each element is equal on both sides.

The balanced reacrton is as follows-

2CO + 1O2 -----> 2CO2

[2C and 4O om both sides.]