Which of the following apparatus is NOT used in volumetric analysis?

Step 1: Analyze the question We are asked to pick the apparatus that is NOT used in volumetric analysis (titration).

Step 2: Explain the concept Volumetric analysis is a method of finding the concentration of a solution by reacting a measured volume of it with a solution of known concentration (a titration). The equipment is for measuring and handling the volumes of liquids accurately.

Step 3: Go through the options

• A. Pipette: Used to measure and transfer a fixed volume of solution (e.g. 20.0 cm³ or 25.0 cm³) accurately into the conical flask. It is used.
• B. Burette: Holds the titrant and delivers it in a controlled way, so you can read the volume used. It is used.
• C. Desiccator: A sealed container with a drying agent (e.g. anhydrous calcium chloride or silica gel) used to dry substances or keep them free from moisture. It does not measure or deliver volumes, so it is not part of a titration setup.
• D. Conical flask: Holds the solution being titrated, and you swirl it as the titrant is added. It is used.

Step 4: Answer

Tip: For volumetric analysis, remember the "PBC" set: Pipette, Burette, Conical flask. Add the indicator and white tile, and you have the whole titration setup. Anything for drying or storing (desiccator) or for heating (crucible) is not part of it.