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Standard VI
Physics
Conductors and Insulators
Non-metals ar...
Question
Non-metals are usually poor conductors of heat and electricity. They are non-lustrous, non-sonorous, non-malleable and are coloured.
The allotropic form of a non-metal, which is a good conductor of electricity is:
A
Graphite
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B
Diamond
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C
Rhombic sulphur
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D
None of these
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Solution
The correct option is
A
Graphite
Graphite, which is an allotrope of carbon, is a good conductor of electricity due to presence of free electrons.
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Question 30
Non-metals are usually poor conductors of heat and electricity. They are non-lustrous; non-sonorous; non-malleable and are coloured.
(a) Name a lustrous non-metal.
(b) Name a non-metal which exists as a liquid at room temperature.
(c) The allotropic form of a non-metal is a good conductor of electricity. Name the allotrope.
(d) Name a non-metal which is known to form the largest number of compounds.
(e) Name a non-metal other than carbon which shows allotropy.
(f) Name a non-metal which is required for combustion.
Q.
Non metals are usually poor conductors of heat and electricity. They are non-lustrous, non-sonorous, non-malleable and are coloured.
Which of the following is/are lustrous non-metals?
Q.
Non metals are usually poor conductors of heat and electricity. They are non-lustrous, non-sonorous, non-malleable and are colour.
Name a non - metal which exists as a liquid at room temperature.
Q.
Non-metals are usually poor conductors of heat and electricity. They are non-lustrous, non-sonorous, non-malleable and are coloured.
The non-metal which is known to form the largest number of compounds is:
Q.
Non-metals are usually poor conductors of heat and electricity. They are non-lustrous, non-sonorous, non-malleable, and are colored.
Non-metal which is required for combustion is ______________.
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