General Knowledge - General Science

Exercise :: General Science - Nuclear Science

16. 

In an atomic nucleus, neutrons and protons are held together by

A. gravitational forces
B. exchange forces
C. coulombic forces
D. magnetic forces

Answer: Option B

Explanation:

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17. 

'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: Option D

Explanation:

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18. 

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: Option A

Explanation:

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19. 

Atoms of an element differ from those of all other elements in

A. atomic number and electronic configuration
B. number of neutrons and number of valence electrons
C. atomic number and number of valence electrons
D. number of neutrons and electronic configuration

Answer: Option A

Explanation:

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20. 

Nuclear fission is caused by the impact of

A. neutron
B. proton
C. deuteron
D. electron

Answer: Option A

Explanation:

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