Chemistry XII 

1. Define the following

   • Co-ordination number

   • Epson Salt

   • Interstitial Hydride

   • Periodicity

   • Causes of Periodicity

   • P.Block Elements

2. Define Modern Periodic Law state the composition of the Periodic table on the basis of Electronic configuration. 

3. Explain the different isotopes of Hydrogen?

4. Discuss the position of Hydrogen in group VII-A of the Periodic table

5. Write the chemical formulae and short notes on the following

   • Bleaching Powder

   • Gypsum

   • Borax

   • Oleum

6. Describe the manufacture of Sulphuric acid/H₂So₄ by contact process?

7. Draw the Geometrical Shape of H₂S and H₂So₄ molecules

8. Explain Allotropy why does graphite conduct Electricity where as Diamond does not?

Section B

1. Describe three different methods of preparation of Ethyne/Ethane?

2. Describe and explain the orbital structure of Ethyne?

3. Give the Structure of the following

   • Methyl Benzene

   • Picric Acid

4. Give method for the preparation of the following Compounds

   • Ethanol

   • Propanone

   • Ethanoic Acid

5. Write Short Notes on

   • Paints

   • Functional Groups

   • Polymerization

   • Detergents

6. What are the sources of Vitamins A,E and K? what are the diseases caused by their deficiency

 

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