1. Which Coal has maximum percentage of Carbona) Lignite b) Bituminous c) Anthracite d) Peat

2. Which compound show high knocking a) n-Heptane b) Iso-heptane c) n-pentane d) iso-octaneb)

Q#2. Attempt any Eight (2*8=16)

1. Catenation is the property which makes carbon different from other elements of the periodic table. Justify.

2. What is cracking of petroleum? Why do we need cracking of petroleum?3. How do you define Octane number and how it can be improved?4. Give at least five compounds which are homo-cyclic but are not aromatic?5. Draw the structural formula of Furan, Thiophene, Pyrrole, and Pyridine.6. What is meant by functional group? Name and represent four functional group containing

Oxygen7. Why the all bond angle in propane is not equal?8. 1-Butene does not show geometrical isomerism, but 2-Butene does give?9. Why is restricted rotation necessary to show the geometrical isomerism?10. 2-Butyne does not show geometrical isomerism ,but 2-Butene does give reason11. Why Carbon is Tetravalent in its compounds?

What do you means by Cracking and reforming how they are differed from each other?

Explain the structure of Ethane, Ethene and Ethyne with the reference of Hybridization?

What are function group and functional group isomerism? Also explain position isomerism