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Class 11 Chemistry Practice Test: Basic Concepts of Chemistry - Mole Concept and Molar Masses
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Avg score: 81% Most missed: “What’s the number of entities or particles together in mole concept known as?”

Molar mass of a substance is the mass in grams of one mole of the compound. In a substance, the amount of entities present e.g. atoms, molecules, ions, is defined as a mole. A mole of any substance is 6.022×10^23 molecules.

The number 6.022 × 10²³ is known as Avogadro's number or Avogadro's constant. The concept of the mole can be used to convert between mass and number of particles.

Class 11 Chemistry Practice Test: Basic Concepts of Chemistry - Mole Concept and Molar Masses
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10 Questions

1. According to S.I. the system, ______ was used to measure the amount of substance.
2. 1 u = Ma/NA.
3. A mole of any substance contains _______
4. What’s the number of entities or particles together in mole concept known as?
5. 1 mole of ammonia is of 17 g. Then what is the mass of 0.3 moles of ammonia?
6. 12.044 x 1023 atoms of oxygen contains _______
7. What’s the number of particles in 10 moles of hydrochloric acid?
8. One mole of sucrose contains how many grams of sucrose?
9. Which of the following statement is correct?
10. If one mole of ammonia contains “y” number of particles, then how many particles do 1 mole of glucose contain?