Compounds that should not be used as primary standards in t…

JEE Main - Previous Year Papers JEE MAIN 2025 JEE Mains 03 April 2025 Paper Shift -2 Single Correct MCQ

Published by: CGP EDU Academic Team

Published on: August 13, 2026

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:

B and D Only

D and E Only

C, D and E Only

A, C and D Only

Text Solution

Verified by Experts

The correct answer is:

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.

NaOH 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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