A. phosphorus (V) oxide
B. fused calcium chloride
C. calcium chloride
D. concentrated tetraoxosulphate (VI) acid
Correct Answer:
Option D – concentrated tetraoxosulphate (VI) acid
Explanation
Ammonia gas can be removed from a desiccator by adding a conc. H2SO4 so as to neutralize it since ammonia gas is basic.