Exercise: General Science

Questions for: General Science

According to Avogadro's Hypothesis, the smallest particle of an element or a compound, that can exist independently, is called ____ .
A:
a molecule
B:
a cation
C:
an anion
D:
an atom
Answer: A
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'No two electrons in an atom can have the same set of four quantum numbers' is
A:
Newton's law
B:
Bohr's law
C:
Aufbau principle
D:
Pauli's exclusion principle
Answer: D
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In an atomic nucleus, neutrons and protons are held together by
A:
gravitational forces
B:
exchange forces
C:
coulombic forces
D:
magnetic forces
Answer: B
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The dark lines in the solar spectrum are due to
A:
absorption of corresponding wavelengths by the outer layers of the sun
B:
destructive interference between waves of certain definite wavelengths
C:
absorption of corresponding wavelengths by the prism used in the photograph
D:
absence of corresponding wavelengths from the light emitted by the core of the sun
Answer: A
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Who suggested that most of the mass of the atom is located in the nucleus?
A:
Thompson
B:
Bohr
C:
Rutherford
D:
Einstein
Answer: C
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