Give reason happiness is not a physical quantity

e cannot measure love, feelings, happiness, afraid etc. So these are not the physical quantities. Physical quantities can be categorized into two types:

arious happenings in life e.g., happiness, sorrow etc. are not physical quantities because these can not be measured. ... Thus while expressing definite amount of physical quantity, it is clear that as the unit(u) changes, the magnitude(n) will also change but product 'nu' will remain same.

step-by-step explanation:

whole numbers, zero or greater

answer:

the reaction is type of combination reaction.

explanation:

on the product side, there are 2 molecules of bonded to fe   which means one atom of fe are combined two molecules of . so, balanced chemical equation becomes :

this reaction follows the reaction type of combination reaction. a combination reaction is defined as chemical reaction in which reactants combines together to form a single product.