Q2 of 19 Page 149

Answer the following questions

In which compound forms does carbon occur?

Carbon occurs in crystalline forms, non-crystalline(amorphous) forms and in hydrocarbons forms.

1. Carbon has three crystalline forms(allotropes) which are Diamond, Graphite and Fullerene.


2. Coal, charcoal, coke are the non-crystalline forms of carbon.


3. The two types of hydrocarbons forms in which carbon occur are saturated hydrocarbons and unsaturated hydrocarbons.


More from this chapter

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1

Select the proper option and complete the statements

(single, all, double, ionic, carbon, give and take, hydrogen, multiple, share, most, covalent)


A. A carbon atom forms a …… bond with other atoms. In this bond the two atoms …. electrons.


B. All the carbon bonds in a saturated hydrocarbon ....…. electrons.


C. At least one carbon bond in an unsaturated hydrocarbon is ….


D. …. is the essential element in all the organic compounds?


E. The element hydrogen is present in …. organic compound.

 2

Answer the following questions

Why are carbon and its compounds used as fuels?

 2

Answer the following questions

Write the uses of diamond.

 3

Explain the difference:

A. Diamond and graphite.


B. Crystalline and non-crystalline forms of carbon.