Which of the following are primary standard? (2024)

Which of the following are primary standard?

B

Potassium permanganate

D

Sodium hydroxide

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A primary standard is a reagent that is extremely pure, stable, has no water of hydration and has a high molecular weight . Some primary standards are sodium carbonate, potassium hydrogen iodate, potassium dichromate, oxalic acid etc

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Which of the following are primary standard? (2024)
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