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JEE Main 20249 AprilMorning Shift
Exam
JEE Main
Year
2024
Date
9 April
Shift
Morning Shift
Subject
Chemistry
Chapter
Redox Reactions

JEE Main 2024 · 9 April · Morning Shift · Chemistry · Redox Reactions

Identify the incorrect statements regarding primary standard of...

Identify the incorrect statements regarding primary standard of titrimetric analysis. (A) It should be purely available in dry form. (B) It should not undergo chemical change in air. (C) It should be hygroscopic and should react with another chemical instantaneously and stoichiometrically. (D) It should be readily soluble in water. (E) (\mathrm{KMnO}_4 ~\&~ \mathrm{NaOH}) can be used as primary standard. Choose the correct answer from the options given below :

Options

  1. A(A) and (B) only
  2. B(C) and (E) only
  3. C(B) and (E) only
  4. D(C) and (D) only

Correct answer

B. (C) and (E) only

Step-by-step solution

KMnO4&NaOH→\mathrm{KMnO}_4 \& \mathrm{NaOH} \rightarrow Secondary standard. Primary standard should not be Hygroscopic.
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