FBISE, NCP & NBF-aligned resources for Classes 9–12
Browse by Class
Browse by Type
Chemistry Chapter 6 : Topic 8
Avogadro’s Constant
1 / 18
What is the correct definition of one mole?
Reasoning: One mole is defined as an amount of substance containing6.02×10²³ particles (Avogadro’s constant).
2 / 18
Avogadro’s constant refers to:
Reasoning: It represents the number of particles in 1 mole.
3 / 18
The mole is best described as a unit used to measure:
Reasoning: Mole is the SI unit for amount of substance, not mass or volume.
4 / 18
Avogadro’s constant is important because it:
Reasoning: It connects visible amounts of matter with number of particles.
5 / 18
Which statement best describes the relationship between mole and Avogadro’s constant?
Reasoning: A mole is defined as an amount containing Avogadro’s number of particles.
6 / 18
Avogadro’s constant has the same value for:
Reasoning: It is universal and independent of substance type.
7 / 18
Which of the following correctly describes one mole of any substance?
Reasoning: One mole always contains Avogadro’s number of particles, regardless of substance.
8 / 18
The concept of mole is introduced in chemistry mainly to:
Reasoning: Atoms and molecules are extremely small, so mole helps in counting them in bulk.
9 / 18
Avogadro’s constant represents the number of particles in:
Reasoning: It is defined per one mole of any substance.
10 / 18
Which statement is correct about mole concept?
Reasoning: Mole is similar to a dozen but represents a very large number (Avogadro’s number).
11 / 18
Avogadro’s constant allows chemists to:
Reasoning: It connects mass scale to particle scale.
12 / 18
Why is Avogadro’s constant considered universal?
Reasoning: It is a fixed natural constant for all matter.
13 / 18
The mole concept is similar to counting units like dozen because:
Reasoning: Like a dozen =12, a mole =6.02×10²³ particles.
14 / 18
Which of the following is NOT true about Avogadro’s constant?
Reasoning: It is constant and does not change with element type.
15 / 18
The mole concept is essential in chemistry because:
Reasoning: Mole allows practical counting of atoms and molecules.
16 / 18
Which statement best describes Avogadro’s constant in terms of meaning?
Reasoning: It directly defines particles per mole.
17 / 18
The relationship between mole and Avogadro’s constant shows that:
Reasoning: It confirms that matter consists of discrete particles that can be counted indirectly.
18 / 18
Avogadro’s constant is best described as a:
Reasoning: It is a fundamental constant of nature used in chemistry.
Your score is
Restart quiz
