JEE Main & Advanced Chemistry Some Basic Concepts of Chemistry / रसायन की कुछ मूलभूत अवधारणाएँ Question Bank Topic Test - Some Basic Concepts of Chemistry (8-5-21)

The numbers of moles of \[BaC{{O}_{3}}\]which contain 1.5 moles of oxygen atoms is

A) 0.5

B) 1

C) 3

D) \[6.02\times {{10}^{23}}\]

Correct Answer: A

Solution :

[a] \[\because \] 3 moles of oxygen is that in 1 mole of \[BaC{{O}_{3}}\]

\[\therefore \] 1.5 moles of oxygen is that in mole of \[BaC{{O}_{3}}\] \[=\frac{1}{3}\times 1.5\]\[=\frac{1}{2}=0.5\].