Basic Concepts of Chemistry – 25 One-Word Questions & Answers for JEE/NEET

Basic Concepts of Chemistry – 25 One-Word Questions & Answers (JEE/NEET)

Basic concepts form the foundation of Chemistry for both JEE and NEET. Here is a high-yield list of 25 one-word questions and answers that help in fast revision and concept recall.

Physical Chemistry Organic Chemistry Inorganic Chemistry

📘 One-Word Questions and Answers

1. Smallest particle of an element? → Atom
2. Number of protons in an atom? → Atomic Number
3. Sum of protons and neutrons? → Mass Number
4. SI unit of amount of substance? → Mole
5. Number of atoms in 1 mole? → Avogadro’s Number
6. Formula for moles? → n = Mass/Molar Mass
7. Same atomic number, different mass number? → Isotopes
8. Same mass number, different atomic number? → Isobars
9. Same number of neutrons? → Isotones
10. Unit of atomic mass? → amu
11. Law: mass cannot be created or destroyed? → Law of Conservation of Mass
12. Law: fixed composition of compounds? → Law of Definite Proportions
13. Law: simple whole number ratios? → Law of Multiple Proportions
14. Empirical formula of Benzene? → CH
15. Ratio of actual to calculated mass? → Percentage Yield
16. Positively charged ion? → Cation
17. Negatively charged ion? → Anion
18. Gas constant R in SI? → 8.314 J/mol·K
19. Molar volume at STP? → 22.4 L
20. pH of pure water? → 7
21. Scientist who proposed atomic theory? → Dalton
22. First element in periodic table? → Hydrogen
23. Liquid metal? → Mercury
24. Liquid non-metal? → Bromine
25. Heaviest naturally occurring element? → Uranium

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Why These One-Word Questions Matter

These one-word questions target the most scoring portion of JEE & NEET Chemistry. They aid in:

• Quick memory recall
• Rapid revision before exam
• Strengthening conceptual basics
• Improving accuracy in MCQs

More Study Material

Explore complete Chemistry revision resources:

• Physical Chemistry Notes & Tests
• Organic Chemistry Notes & Questions
• Inorganic Chemistry Notes & PYQs

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Conclusion

These 25 one-word question-answers are perfect for fast revision and sure-shot marks. Bookmark this page and revise regularly for best results in JEE and NEET.

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