Chemistry – Important Questions Bank for Gujarat (12th Std) HSC Board Exam 2019

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Chemistry Important Question Bank 2019 (English Medium) 

1. Explain: Carbon fibres and give their types and two uses.
2. Give two chemical equations to prepare acetyl chloride and also give substitution reactions of chlorine group in acetyl chloride.
3. Write preparation of Vulcanized rubber. State its properties and uses.
4. Explain: Emulsion and its classification.
5. Explain: Tendency of transition metal ion to form complex compounds.
6. Give uses of Lanthanide elements.
7. Explain Condensation reaction of Aldehyde and Ketone compounds by reactions only
8. Explain: Hume and Rothery rules for alloys.
9. Explain: The production of Potassium dichromate by giving equation. State its oxidising property by giving equation and uses.
10. Draw diagram of Hydrogen fuel cell. Give its reactions taking place at anode and cathode and give its two principal uses.
11. Explain : Metallic bond and also conduction of electricity in metal
12. Write a short note on mechanism of Missile formation
13. Write short note on Organo metallic compounds.
14. Write a short note on Electrophoresis with diagram.
15. Explain Preparation of Bakelite, give two uses.
16. What is Actinide series? State properties and uses of the elements of this series.
17. What is called activation energy? What are the necessary conditions for a chemical reaction to occur?
18. Give the importance for Stereo Chemistry.
19. Write a note on Pheromones.
20. Name the oxy-acids of Phosphorus, giving their molecular and structural formula.
21. Discuss the magnetic properties of Transition ions or compounds. The experimental values of magnetic moment of some compounds differ than their theoretical values. Why?
22. Explain by giving chemical reaction for the intermediate obtained by reaction of Methyl magnesium iodide with Ethanal and Propanone which give alcohols on their hydrolysis.
23. Explain: Different addition reaction of Ethanal.
24. Explain Wolff-Kishner and Clemmenson reduction reactions.
25. Derive formula of Langmuir Absorption Isotherm and express the equation at low and high pressure situations.
26. Write a note on Breeder Reactor.
27. What is meant by Molal Depression constant? Derive formula for Molal Depression constant.
28. Describe energy band model. Explain the various electrical conductivity observed in substances on the basis of this theory.
29. Explain Filler, Plasticizer and Anti-oxidants.