pounds
es
8. Write answers to the following in
detail.
a. What are the different types of coal?
What are their uses?
b. How will you prove experimentally
that graphite is good conductor of
electricity?
c. Explain the properties of carbon.
d. Classify carbon.
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Answers
Answer:
question 1Thermal coal is mostly used for power generation, cement manufacturing and other industrial purposes, while metallurgical coal is used primarily for manufacturing iron and steel. Anthracite is the most mature coal and thus has the highest carbon content of any type of coal
question 2 Graphite is only a single non metal which is used to conduct the electricity and hence termed as a good conductor of electricity. Proof: Apply current on one end of the pencil lid and check with the tester on the other end ,if the tester light glow then graphite is a good conductor of electricity. question 3 Carbon (from Latin: carbo "coal") is a chemical element with the symbol C and atomic number 6. It is nonmetallic and tetravalent—making four electrons available to form covalent chemical bonds. It belongs to group 14 of the periodic table. Carbon makes up only about 0.025 percent of Earth's crust.