Question

7. List any three physical properties of graphite
8. List any three uses of graphite
9. What happens when coal is burnt?
10. What happens when carbon is treated with
ferric oxide? Write the chemical equation
for it.
11. How can you show that wood charcoal
adsorbs colour from some substances?
12. Give two uses each of:
(a) lamp black, and (b) animal charcoal
13. What is a fuel? What are the characteristics
of a good fuel?
14. Name two (a) solid fuels, (b) liquid fuels
and (c) gaseous fuels.
15. List the four different types of coal. Give
the approximate percentage of carbon
present in them.
16. Give two uses of coke.
17. How does water help in extinguishing fire?
18. How does carbon dioxide gas help in
extinguishing fire?
19. How is carbon dioxide gas prepared?
Discuss any two methods.
20. What happens when:
(a) carbon dioxide gas reacts with sodium
hydroxide?
(b) carbon dioxide gas is passed through
limewater?
the following
are​

Answer 1

Answer:

7 question Physical Properties of Graphite

Chemical Classification Native element

Mohs Hardness 1 to 2

Specific Gravity 2.1 to 2.3

Diagnostic Properties Color, streak, slippery feel, specific gravity