ECAT Engineering Exams Quizzes MCQs Quizzes ECAT Engineering Entry Test 2017 Chemistry Basic Concepts 2

Question:
One cm³H₂ gas at S.T.P. contains number of atoms

Option A):
1.67 x 10²⁴
Option B):
0.53 x 10²⁰
Option C):
6 x 10²³
Option D):
1 x 10²⁰

Correct Answer is Option B):
0.53 x 10²⁰