Class 9 Chemistry MCQs - Chapter 7

Structure of Atoms Quiz Questions and Answers PDF - 3

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Structure of Atoms Questions & Answers PDF Download: MCQ Quiz 3

MCQ 11: The lowest energy orbital among the following is

MCQ 12: When Uranium-238 emits α particles it decays in to

Helium
Carbon
Thorium-234
Uranium-235

MCQ 13: D sub-shell can accommodate maximum

2 electrons
10 electrons
14 electrons
6 electrons

MCQ 14: Chlorine-35 exists in nature about

0.35
0.4
0.5
0.75

MCQ 15: Protium has

one neutron
two neutrons
no neutron
3 neutrons

Class 9 Chemistry Mock Tests

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