Question
Chemistry Question on Solutions
Which of the following statements is incorrect?
A
KMnO4 and NaOH can be used as secondary standard
B
Primary standard should not undergo change in air
C
Reaction of primary standard with another substance should not be instantaneous
D
Primary standard should be soluble in H2O
Answer
Reaction of primary standard with another substance should not be instantaneous
Explanation
Solution
The Correct answer is option is (C) : Reaction of primary standard with another substance should not be instantaneous