Question

Statement 1: The number of gram molecules of oxygen in $6.02\times {10}^{24}CO$ molecules is 5.0.
Statement 2: The value of Avogadro number is $6.02\times {10}^{23}$

• A. Statement 1 is True, statement 2 is True, Statement 2 is a correct explanation of statement 1.
• B. Statement 1 is True, statement 2 is True, Statement 2 is not a correct explanation of statement 1.
• C. Statement 1 is True, Statement 2 is False.
• D. Statement 1 is False, Statement 2 is True.

Answer 1

Answer: (B)

Statement 1 is True, statement 2 is True, Statement 2 is not a correct explanation of statement 1.

$6.02\times {10}^{24}$ molecules of $CO=6.02\times {10}^{23}\times 10$ i.e.., 10 moles of CO.
10 moles of CO contains 10 gm atoms of oxygen i.e. 5 gm molecules of oxygen.
hence the correct answer is A the given assertion is correct and reason is the correct explanation to the assertion.