Most Important Questions For Class 11 Chemistry
1. What are the three states of matter? Explain them briefly.
2. What is the difference between a physical change and a chemical change?
3. Define the terms element and compound.
4. What is the atomic structure of an atom?
5. What is the difference between a cation and an anion?
6. What is the periodic table? Explain its organization.
7. Define electronegativity and explain how it relates to chemical bonding.
8. What is Avogadro's number and what is its significance?
9. Define the terms acid and base. Explain the pH scale.
10. What is the difference between an exothermic and endothermic reaction?
11. What is stoichiometry and how is it used in chemistry?
12. Define the terms oxidation and reduction. Explain the difference between them.
13. What are the different types of chemical reactions? Give examples of each.
14. What is the ideal gas law? How is it used in chemistry?
15. What is the difference between a solution, a suspension, and a colloid?
16. Explain the different types of chemical bonds.
17. Define the terms entropy and enthalpy.
18. What is a mole? How is it used in chemistry?
19. Explain the different types of intermolecular forces.
20. What is the difference between a homogeneous and heterogeneous mixture?
21. What is the law of conservation of mass? How does it relate to chemical reactions?
22. Define the terms activation energy and reaction rate. How are they related?
23. What are the properties of acids and bases? How are they different?
24. What is the difference between an ionic bond and a covalent bond?
25. What is the significance of the octet rule in chemical bonding?
26. What are the properties of metals, nonmetals, and metalloids?
27. What is the difference between a primary and secondary alcohol?
28. Define the term isomer. Give an example.
29. What is the difference between an aldehyde and a ketone?
30. Explain the different types of organic reactions.
31. What is the difference between a saturated and unsaturated hydrocarbon?
32. Define the terms polymer and monomer. Give an example of each.
33. What are the properties of alkenes and alkynes?
34. What is the difference between an addition reaction and a substitution reaction?
35. What are the properties of esters? Give an example of an ester.
36. Explain the different types of polymerization.
37. What is the difference between a polar and nonpolar molecule?
38. What are the properties of aromatic compounds? Give an example of an aromatic compound.
39. Define the term functional group. Give an example of a functional group.
40. What is the difference between a reversible and irreversible reaction?
41. Define the term acid dissociation constant (Ka). How is it related to acid strength?
42. What are the different types of titrations? Give an example of each.
43. What is the difference between a weak and strong acid? Give an example of each.
44. Explain the different types of equilibria in chemistry.
45. What is the significance of Le Chatelier's principle in chemical equilibria?
46. What is the difference between a reducing agent and an oxidizing agent?
47. What is the difference between a voltaic cell and an electrolytic cell?
48. Define the term half-life. How is it used in nuclear chemistry?
49. Explain the different types of radiation emitted by radioactive substances.
50. What is the difference between fusion and fission?
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