Chemistry-Atomic & Molecular Mass
NEET Chemistry Atomic & Molecular Mass MCQ Question
Type: MCQ-conceptual-Easy-Class 11
Which of the following statements about atomic and molecular mass is correct?
A
1 mole of any substance contains 6.022 × 10^23 entities.
B
Atomic mass is defined as the mass of one atom in grams.
C
Molecular mass can be expressed in moles.
D
The mass of a mole of hydrogen molecules is equal to the mass of a mole of sodium chloride molecules.
Correct Answer
Option A
Detailed Explanation
Statement A is correct as it defines the concept of a mole and Avogadro's number, while B is incorrect because atomic mass is measured in atomic mass units (amu), not grams. C is misleading as molecular mass is not expressed in moles but in atomic mass units or grams per mole. D is incorrect as different substances have different molar masses.
Found an issue with this question?