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JEE Main 201816 AprilOnline
Exam
JEE Main
Year
2018
Date
16 April
Mode
Online
Subject
Chemistry
Chapter
Chemical Equilibrium

JEE Main 2018 · 16 April · Online · Chemistry · Chemical Equilibrium

For standardizing NaOH solution, which of the following is used as...

For standardizing NaOHNaOH solution, which of the following is used as a primary standard?

Options

  1. ASodium tetra borate
  2. BFerrous Ammonium sulphate
  3. COxalic acid
  4. DDil. HCl

Correct answer

C. Oxalic acid

Step-by-step solution

A primary standard in metrology is a standard that is sufficiently accurate such that it is not calibrated by or subordinate to other standards. Primary standards are defined via other quantities like length, mass and time. Primary standards are used to calibrate other standards referred to as working standards.

Oxalic acid is used as a primary standard for NaOHNaOH standardization.

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