Chemistry Test 4 – Structure of the Atom | Willer Academy

Willer Academy: Chemistry Test #4 – Structure of the Atom

Chapter: NCERT Class 9 – Chapter 4 | NEET Foundation

Instructions:
✔ 10 MCQs | +4 for Correct | –1 for Incorrect | 0 for Unattempted
✔ Submit to see your score and in-depth feedback.
1. The nucleus of an atom contains:
2. The mass of an electron is approximately:
3. Which statement best explains Thomson’s model of atom?
4. The maximum number of electrons in the K shell is:
5. Isotopes have:
6. The atomic number is:
7. The number of electrons in O2– (oxide ion) is:
8. Which of these pairs are isobars?
9. Which subatomic particle carries no charge?
10. What is the valency of elements with 3 or 5 electrons in valence shell?
💬 Type “N” for the next test or “BIO1” for Biology Foundation Series!
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