Chemistry Quiz Class 12

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Chemistry quiz class 12 tests your knowledge across key concepts from NCERT, CBSE, and ICSE syllabi, ensuring comprehensive preparation for exams.

One-Liner Questions for Chemistry Quiz Class 12

1. What is the IUPAC name of CH₃-CH₂-COOH?
2. State Faraday’s second law of electrolysis.
3. Define molar conductivity.
4. What is the hybridization of carbon in methane (CH₄)?
5. Name the principal ore of aluminum.
6. State the role of a catalyst in a reaction.
7. What is a colligative property?
8. Define the term “molarity.”
9. Which compound is used as an antiseptic in hospitals?
10. What is the oxidation state of sulfur in H₂SO₄?
11. State the pH range of acidic solutions.
12. Name the gas liberated during the reaction of metals with acids.
13. What is meant by “equilibrium constant”?
14. Give one use of chloroform.
15. What is Avogadro’s number?
16. Name the hardest known natural substance.
17. What are isotopes?
18. Define periodicity in chemistry.
19. Name one allotrope of carbon.
20. What is the unit of rate constant for a first-order reaction?
21. Explain Le Chatelier’s principle in brief.
22. What are nucleophiles?
23. State the relationship between bond order and bond length.
24. What is an azeotrope?
25. Name the gas responsible for the greenhouse effect.
26. What is the electronic configuration of Neon?
27. Which law is used to calculate the heat of reaction?
28. What is a buffer solution?
29. Name the monomer of natural rubber.
30. Define “standard electrode potential.”
31. What is Ziegler-Natta catalyst used for?
32. Name an example of a biodegradable polymer.
33. Define “enthalpy.”
34. What is the hybridization of boron in BF₃?
35. State the Aufbau principle.
36. What is the common name of CH₃OH?
37. Name the reducing agent used in the extraction of iron from its ore.
38. Define “rate of reaction.”
39. What is corrosion?
40. State one application of colloids in industry.
41. What are diamagnetic substances?
42. What is meant by saponification?
43. Name an example of an aromatic hydrocarbon.
44. What is meant by “order of a reaction”?
45. What are fuel cells?
46. Name the acid used in car batteries.
47. Define “activation energy.”
48. What is an alkali?
49. Name one naturally occurring radioactive element.
50. What is the principle behind the separation of pigments in chromatography?

Answers for Chemistry Quiz Class 12

1. Propanoic acid
2. The mass of a substance deposited or liberated at an electrode is directly proportional to the quantity of electricity passed.
3. Molar conductivity is the conductivity of an electrolyte solution divided by the molar concentration.
4. sp³ hybridization
5. Bauxite (Al₂O₃.2H₂O)
6. Catalysts speed up reactions without being consumed.
7. A property that depends on the number of solute particles.
8. Number of moles of solute per liter of solution.
9. Phenol
10. +6
11. 0-7
12. Hydrogen gas (H₂)
13. Ratio of product concentrations to reactant concentrations at equilibrium.
14. Used as an anesthetic.
15. 6.022 × 10²³
16. Diamond
17. Atoms with the same number of protons but different neutrons.
18. Recurrence of properties at regular intervals in elements.
19. Graphite
20. s⁻¹
21. A system at equilibrium adjusts to minimize changes.
22. Species that donate an electron pair.
23. Inversely related; higher bond order means shorter bond length.
24. A mixture that boils at a constant temperature without composition change.
25. Carbon dioxide (CO₂)
26. 1s² 2s² 2p⁶
27. Hess’s law
28. A solution that resists change in pH.
29. Isoprene
30. Voltage between an electrode and its solution.
31. For polymerization of alkenes.
32. Polylactic acid (PLA)
33. Heat content of a system.
34. sp² hybridization
35. Electrons occupy orbitals of the lowest energy first.
36. Methanol
37. Carbon (C) or coke
38. Change in concentration per unit time.
39. Deterioration of metal due to oxidation.
40. Purification processes, e.g., paints.
41. Substances not attracted to a magnetic field.
42. Hydrolysis of fats/oils with bases.
43. Benzene
44. Sum of powers of concentration terms in the rate law.
45. Convert chemical energy into electrical energy.
46. Sulfuric acid (H₂SO₄)
47. Minimum energy for reaction to occur.
48. A base that dissolves in water.
49. Uranium
50. Differences in their absorption on the surface of a stationary phase.

Key Takeaways

1. Regular quizzes enhance memory retention.
2. Understanding concepts in-depth improves problem-solving.
3. Chemistry applications extend to daily life and industry.
4. NCERT, CBSE, and ICSE align major concepts.
5. Practice solidifies theoretical and practical knowledge.
6. Equilibrium concepts have broad applications.
7. Chemical bonding is foundational to structures.
8. Acids and bases are essential for pH balance.
9. Polymer chemistry impacts everyday products.
10. Electrochemistry influences many modern technologies.

Also Read: Chemistry GK Questions: One Liner

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