Chemistry : CBSE Class XII Important Questions Chemistry (2008)

Q. 1. State function of antihistamines along with example.

Q. 2. State the function of antioxidants along with example.

Q. 3. What are hybrid propellants?

Q. 4. State de broglie relationship.

Q. 5. Why InCl undergoes disproportionation reaction but TlCl does not?

Q. 6. Differentiate between hormones and vitamins.

Q. 7. Why Hydrogen fluoride is weaker acid than hydrogen chloride in water?

Q. 8. Name the chief ore of copper.

Q. 9. Why Nitrobenzene does not undergo Friedal craft’s alkylation.

Q. 10. What are disperse dyes?

Q. 11. Why chemistry of all lanthanides is quite similar?

Q. 12. Describe cannizzaro reaction.

Q. 13. Describe aldol condensation.

Q. 14. Give a chemical test to distinguish between etanal and propanal.

Q. 15. Why anhydrous aluminium chloride acts as a catalyst.

Q. 16. Why white phosphorus is more reactive than red phosphorus?

Q. 17. Why sulphur in vapour state exhibits paramagnetic behavior?

Q. 18. What are essential and non essential amino acids?

Q. 19. Define the term co enzyme.

Q. 20. What is meant by mutation in biomolecules?

Q. 21. State function of antihistamines along with example.

Q. 22. State the function of antioxidants along with example.

Q. 23. What are hybrid propellants?

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