Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R)
Assertion (A) : An aqueous solution of $KOH$ when used for volumetric analysis, its concentration should be checked before the use
Reason (R) : On aging, $KOH$ solution absorbs atmospheric $CO _2$
In the light of the above statements, choose the correct answer from the options given below :
Read More: Some Basic Concepts of Chemistry
There are two ways of classifying the matter:
Matter can exist in three physical states:
Based upon the composition, matter can be divided into two main types: