Class 9 Chemistry Exam MCQs – Practice Test 4 (Chapter 7)

Structure of Atoms Notes Questions with Answers PDF Download – Test 4

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The MCQ: &alpha particles are; "Structure of Atoms Notes" App APK Download with answers: doubly positively charged, positively charged, negatively charged, and doubly negatively charged to learn online schools courses. Practice Atomic Structure Experiments MCQ Questions, download Kobo e-Book (Free Chapter) for free online courses.

Structure of Atoms MCQs – Practice Test 4 PDF Download

MCQ: 16

α particles are

positively charged
doubly positively charged
negatively charged
doubly negatively charged

MCQ: 17

The energy of emitted light is equal to

sum of energy levels
difference between energies of orbits
product of energies of orbits
none of above

MCQ: 18

Atoms having same atomic number but different atomic mass are called

derivatives
isotopes
elements
isomers

MCQ: 19

Rutherford bombarded thin gold foil with

α particles
β particles
γ particles
neutrons

MCQ: 20

Iodine-123 is used to

diagnose thyroid problem
image the brain
kill cancer cells
trace the blood flow

Structure of Atoms Exam Prep – Class 9 Chemistry App & e-Book Notes

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