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Questions

Question (1)

QN007111

The central region of an atom is called the —

(A) Electron cloud
(B) Orbit
(C) Nucleus
(D) Shell

Correct Answer: C

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Question (2)

QN007112

Protons are present inside the —

(A) Shells
(B) Nucleus
(C) Orbitals
(D) Valence shell

Correct Answer: B

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Question (3)

QN007113

The charge on a neutron is —

(A) Positive
(B) Negative
(C) Neutral
(D) Double positive

Correct Answer: C

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Question (4)

QN007114

Which subatomic particle carries a negative charge?

(A) Proton
(B) Neutron
(C) Electron
(D) Nucleus

Correct Answer: C

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Question (5)

QN007115

The mass of an electron is approximately —

(A) Equal to proton
(B) Greater than neutron
(C) Negligible compared to proton
(D) Double that of proton

Correct Answer: C

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Question (6)

QN007116

Atomic number is equal to the number of —

(A) Neutrons
(B) Electrons and neutrons
(C) Protons
(D) Nucleons only

Correct Answer: C

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Question (7)

QN007117

The sum of protons and neutrons in an atom is called —

(A) Atomic number
(B) Valency
(C) Mass number
(D) Electronic configuration

Correct Answer: C

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Question (8)

QN007118

An atom contains 11 protons and 12 neutrons. Its mass number is —

(A) 11
(B) 12
(C) 23
(D) 24

Correct Answer: C

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Question (9)

QN007119

The number of electrons in a neutral atom is always equal to the number of —

(A) Neutrons
(B) Shells
(C) Protons
(D) Orbits

Correct Answer: C

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Question (10)

QN007120

Which particle determines the identity of an element?

(A) Electron
(B) Proton
(C) Neutron
(D) Nucleon

Correct Answer: B

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