The statement "A standard solution is prepared by pipetting a stock solution into a volumetric flask and diluting to volume with solvent" is true.

• A. True
• B. False
• C. Not sure
• D. Only for organic compounds

Answer: (A)

Precise dilution into a volumetric flask to a calibrated volume is how standard solutions are prepared. By pipetting a known volume of a stock solution into a volumetric flask and then diluting with solvent to the mark, you define the final volume exactly. Because the final volume is fixed by the flask’s calibration, the concentration of the standard is known precisely (Cfinal = Cstock × Vadded / Vfinal). This approach is standard for both inorganic and organic standards, not restricted to any one class of compounds. The accuracy hinges on complete transfer and proper mixing, and on using calibrated glassware and room-temperature considerations. So the statement is true.