This Is Why Chemistry C 12th Old Paper Is So Famous!

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(Long Answer Type Questions)
1. KMnO4 acts as a strong oxidising agent in acidic, basic and neutral medium. Give two example in each
case.
Or
Describe briefly the oxidation, State of 3d-transition series elements along with the paramagnetic
behaviour of the ions/metals of this series.
2. How can aromatic aldehydes and ketones be prepared by the following reactions?
Reimer-Tieemann reaction
Firdel-Crafts reaction
Or
What are carboxylic acids? Describe the general methods of preparation of carboxylic acids.
3. State and explain Faraday’s laws of Electrolysis.
Or
What are electrochemical cells? Describe briefly fuel cell.
4. How is Nitric acid prepared from Ostwald’s process? Give its reaction with ZInc and Iron.
Or
What are interhalogen compound? Why are these names so? Give structure of CIF3 and CIF5
.
(Short Answer Type Questions)
5. What is Arrhenius equation? Discuss its importance.
6. 40gm of NaOH are presented in one deciliter of solution. Calculate mole fraction of NaOH.
7. Explain with suitable example the dielectric properties of solids.
8. Describe the main Postulates of VerniWhat are interhalogen compound? Why arethese names so?
Give structure of CIF3 and CIF5.
(Short Answer Type Questions)
9. Name the oxy-acids of Phosphorous. Write their structure.
10. Explain the following:
Peptide bond
Denaturation of Proteins.
11. Give the reaction of Ethyl amine with:
12. Distinguish with insulator, conductors and semiconductors in terms of energy band diagram.
13. Explain brie¢y, why modulation is needed at all?
12th Class Private Pysics Paper Set-A 2017 Jkbose PDF
(Very Short Answer Type Questions)
14. The following very short answer typr questions may be answered in few words or sentences as may be
required.
15. How many joules in 1 MeV?
16. How can a galvanometer be converted into voltmeter?
17. State Faradays laws of electromagnetic induction.
18. Write down two properties of electromagnetic waves.
19. Telescope lens has usually large aperture why?
20. Explain mass defect.
21. Derive photoelectric equation.
22. De¡ne photoelectric work function.
(Objective Type Questions)

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