Question

FILL IN THE BLANKS

1. Carbon atom has............... electrons in its valence shell.

2. Diamond is the.................form of carbon.

3...................is the main gaseous compound of carbon.

4. ..............is used to make carbon brushes in dynamos.

5................... is used as a pigment and coloring matter in ink and shoe polish.

6. Carbon when heated in limited supply of air forms.................

7. Organic compounds have.................. boiling and melting points.

8. .................. are the compounds of hydrogen and carbon only.

9. Natural gas is an important............... fuel.

10. Graphite is a good conductor of................. 

Answer 1

1. Carbon atom has four electrons in its valence shell.

2. Diamond is the purest form of carbon.

3. Carbon dioxide is the main gaseous compound of carbon.

4. Graphite is used to make carbon brushes in dynamos.

5. Lamp black is used as a pigment and coloring matter in ink and shoe polish.

6. Carbon when heated in a limited supply of air forms carbon monoxide.

7. Organic compounds have low boiling and melting points.

8. Hydrocarbons are the compounds of hydrogen and carbon only.

9. Natural gas is an important fossil fuel.

10. Graphite is a good conductor of electricity.