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Atomic Models MCQs

1. Which of the following statements you think is wrong regarding α particle scattering effect?

a) α particles mostly move through the gold foil having zero deflection

b) A small fraction are deflected

c) One in Twenty Thousand turns 180°

d) The thickness of the gold foil is about 100μm

Answer: The thickness of the gold foil is about 100μm

2. If the number of protons and neutrons of an element is 13 and 14 respectively, then what’s the atomic number(Z) and mass number(A)?

a) 13, 13

b) 13, 27

c) 14, 13

d) 27, 14

Answer: 13, 27

3. Which of the following is not an isotope of hydrogen?

a) protium

b) deuterium

c) tritium

d) helium

Answer: helium

4. Chemical properties of an atom are dependent on a number of electrons in that particular atom.

a) True

b) False

Answer: True

5. Find out the number of neutrons, protons, and electrons of 17Cl37 respectively.

a) 20, 20, 17

b) 17, 17, 20

c) 20, 17, 17

d) 17, 17, 17

Answer: 20, 17, 17

6. Gravitational force = Gm₁m₂/r².

a) True

b) False

Answer: True

7. Pick out the isobar of ₁₈Ar⁴⁰.

a) ₁₂Mg²⁴

b) ₂₆Fe⁵⁸

c) ₁₉K⁴⁰

d) ₂₈Ni⁶⁴

Answer: ₁₉K⁴⁰

8. What is the absolute charge of a proton?

a) +1.602176×10^-27

b) –1.602176×10^-19

c) +1.602176×10^-19

d) –1.602176×10^-27

Answer: –1.602176×10^-19

9. Which of the following models are not the same as Thomson Model of Atom?

a) plum pudding model

b) watermelon model

c) raisin pudding model

d) nuclear model

Answer: nuclear model

10. Elements do emit radiation on their own and this property is known as _____

a) Radioactivity

b) Refraction

c) Absorption

d) Adsorption

Answer: Radioactivity

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Categories: Structure of Atom