In the above experiment X is?
A.
pure nitrogen
B.
a mixture of nitrogen and oxygen
C.
a mixture of nitrogen and carbondioxide
D.
a mixture of oxygen and inert gases
E.
a mixture of nitrogen and inert gases
Correct answer is E
Alkaline solutions of pyrogallol absorb oxygen efficiently and are used in determining the oxygen content of gas mixtures.
calcium chloride absorbs sufficient moisture/water from the air.
So,Nitrogen and Inert gases will be left