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प्रश्न
State the term:
Substances whose atoms or molecules are arranged in a definite pattern.
उत्तर
Crystals.
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संबंधित प्रश्न
Write true or false
Coloured diamonds are costlier than colourless and transparent diamonds
Name the following:
A greyish black non- metal that is a good conductor of electricity.
Answer the following question
Why is graphite a good conductor of electricity but not diamond?
Give two uses of graphite.
Write three differences between graphite and diamond.
Choose the correct alternative
Anthracite is
Choose the correct alternative
Destructive distillation of coal yields
Tick the most appropriate answer.
Diamond and graphite are
a. metals.
b. organic compounds,
c. alkenes.
d. allotropes.
State one use of each of the following:
Diamond, Graphite, Coke, Bone charcoal
State the reasons for use of graphite
(i) as a lubricant for heated machine parts,
(ii) as a lining for crucibles used in manufacture of high grade steel,
(iii) as an electrode in electroplating.
