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प्रश्न
Define the Following Term:
Crystal
उत्तर
A crystal is a homogeneous solid which particles (atoms, molecules or ions) are arranged in difinite pattern due to which they have definite geometrical shape with plane surfaces e.g. sugar and sodium chloride.
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संबंधित प्रश्न
State the term:
Different forms of an element found in the same physical state.
Answer the following question
Why is graphite a good conductor of electricity but not diamond?
Write three differences between graphite and diamond.
Fill in the blank:
......... is the most inferior form of coal.
Name four types of coal with percentage of carbon present in each,with uses.
TRUE \ FALSE
Graphite is a poor conductor of electricity.
Name the crystalline forms of carbon.
Explain the following.
Uses of various allotropes of carbon.
With reference to the structure of the two crystalline allotropes of carbon, state why diamond is inert or unreactive while graphite is comparably more reactive.
‘Wood charcoal – an amorphous aliotrope of carbon reduces heated metallic oxides to metals.’ Give a balanced equation to support the statement.
