JEE Main 2025 — Salt Analysis Question with Solution
From: JEE Main 2025 (Online) 3rd April Evening Shift
Question
Compounds that should not be used as primary standards in titrimetric analysis are :
A.
B. Oxalic acid
C. NaOH
D.
E. Sodium tetraborate
Choose the most appropriate answer from the options given below:
Choose an option
Show full solutionCorrect option: D
Step-by-step explanation
The primary standard is a highly pure stable compound with a known exact composition that can be accurately weighed and dissolved to creat a solution of known concentration.
is hygroscopic and can't be used.
is unstable and can be easily oxidised.
is hygroscopic and can't be used.
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This is a previous-year question from JEE Main 2025, covering the Salt Analysis chapter of Chemistry. PrepSharp catalogues every PYQ from JEE Main with a verified answer key and step-by-step solution prepared by IIT alumni — so you can search by chapter, topic or year and revise efficiently.