Question

5 Which of the following is not the use of
graphite?
(a) It is used as lubricant
(b) It is used in manufacturing of
lead-pencils
(c) It is used in manufacturing of artificial
diamond
(d) It is used for making insulated plates​

Answer 1

Answer:

a is the proper answer for this question

Answer 2

D) It is used for making insulated plates​ is not the use of graphite.

Graphite

• It is an allotrope of the carbon atom in which each carbon atom is bonded with the other three atoms, giving it a planar hexagonal appearance.
• The hexagonal planes of carbon atoms are arranged in a layered manner, one above the other. The allotrope is known for its smooth surface with a greasy feel. Moreover, despite being a non-metal, it is a good conductor of electricity.

Uses of Graphite

• Graphite is widely used for a variety of purposes. It is mixed with clay to make the lead pencils. It is also heated to extreme temperature and pressure to manufacture synthetic (artificial) diamonds.
• Moreover, the slipperiness of graphite serves its purpose for developing products like lubricants, grease, and is also used in paints as a protective coating on furniture and woods.
• Since it conducts electricity, it is widely used in the electrical industry. Hence, it cannot be used for making insulated plates.

Graphite is an allotrope of carbon with a hexagonal planar layered structure. It is a good conductor of electricity. So, it cannot be used for making insulated plates.