SSP (Single Superphosphate) is a fertilizer that contains: ((MCAER 2014))

✅Explanation: Exhausting refers to the process of removing or expelling something, often a gas or liquid, from a confined space. In the context of air, it would typically mean removing or expelling gases from a container or enclosed area.

📌 Other Options Explanations:
-Option A: Degassing is the process of removing dissolved gases from a liquid or solid.
-Option B: Filtration is the process of separating solids from liquids or gases.
-Option C: Aeration is the process of introducing air into a liquid or solid.