Mole Concept, Molar Mass NEET Questions

Physical Chemistry - Some Basic Concepts of Chemistry

Mole Concept, Molar Mass MCQ Questions


1.
In the SI system, the mole was introduced as the seventh base quantity for:
A.
Concentration
B.
Amount of substance
C.
Mass
D.
Volume
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ANSWER :
B. Amount of substance
2.
The SI symbol for mole is:
A.
M
B.
mle
C.
mol
D.
mole
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ANSWER :
C. mol
3.
One mole of any substance contains:
A.
6.022 × 10²⁴ elementary entities
B.
6.022 × 10²¹ elementary entities
C.
6.022 × 10²³ elementary entities
D.
6.022 × 10²² elementary entities
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ANSWER :
C. 6.022 × 10²³ elementary entities
4.
Avogadro's number is denoted by:
A.
Av
B.
n
C.
N
D.
NA
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ANSWER :
D. NA
5.
An elementary entity in the definition of a mole may be:
A.
Only molecules
B.
Only a molecule
C.
Only an atom
D.
An atom, molecule, ion, electron, or specified group of particles
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ANSWER :
D. An atom, molecule, ion, electron, or specified group of particles
6.
The numerical value of Avogadro's constant is:
A.
6.022 × 10⁻²³
B.
6.022 × 10²⁴
C.
6.022 × 10²²
D.
6.022 × 10²³
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ANSWER :
D. 6.022 × 10²³