Question

The above setup can be used to prepare or collect $X$. What could be $X$?

• A. $N{H}_3$
• B. $NO$
• C. $H_2$
• D. $S{O}_3$
• E. $C{O}_2$

Answer 1

The correct option is E $C{O}_2$

The above setup can be used to prepare or collect $C{O}_2$ gas.
The gas to be collected should be heavier than air so that the gas can displace air.
$C{O}_2$ has higher density than air.
$C{O}_2$ is almost 1.5 times heavier than air.