Question

`O_(2)" and "CO_(2)` prepared in the laboratory can be collected by ……….
A. downward displacement of water and downward displacement of air respectively
B. downward displacement of water and upward displacement of air respectively
C. upward displacement 0f water in both cases
D. downward displacement of water in both cases

Answer 1

Correct Answer - B
`O_(2)` is collected by downward displacement of water and `CO_(2)` is collected by upward displacement of air.