Why can graphite not be used in jewellery in place of diamonds?

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Solution

Following are the reasons why graphite is not used in making jewellery :
It is very soft, and brittle in nature and forms a hexagonal layered structure which makes it slippery.
It cannot be moulded like gold and silver and does not have ductility.
It is dull grey in colour and does not possess lusture which is the desired characteristic in jewellery.

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(a) Write two points of difference in the structures of diamond and graphite.
(b) Explain why graphite can be used as a lubricant but diamond cannot.
(c) Explain why diamond can be used in rock drilling equipment but graphite cannot.
(d) State one use of diamond which depends on its 'extraordinary brilliance' and one use of graphite which depends on its being 'black and quite soft'.

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(b) Why is diamond used for making cutting tools (like glass cutters) but graphite is not?
(c) Why is graphite used for making dry cell electrodes but diamond is not?

Q. (a) Why is diamond used for making cutting tools (like glass cutters) but graphite is not?

(b) Why is graphite used for making dry cell electrodes but diamond is not?

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ii) Why are diamonds used in cutting tools?
iii) Why is graphite used in electrical circuits?
iv) Name the force that accounts for the softness of graphite.
v) Name the precious diamond you know and give its weight in grams.

Q. (a) Why is diamond used for making cutting tools (like glass cutters) but graphite is not?

(b) Why is graphite used for making dry cell electrodes but diamond is not?

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