‘X’ melts at low temperature and is a bad conductor of electricity in both liquid and solid state. X is:
A
Mercury
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B
Silicon Carbide
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C
Zinc Sulphide
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D
Carbon Tetrachloride
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Solution
The correct option is D
Carbon Tetrachloride
Explanation for correct option:
(d)
The melting point of carbon tetrachloride is −22.92oC.
The dipole moment is zero. Hence, it is a non-polar compound. As there is no charge separation in the molecule, therefore, this compound is a bad conductor of electricity in solid as well as in the liquid state.
So it melts at low temperatures and is a bad conductor of electricity in both liquid and solid-state.
Explanation for incorrect options:
(a) is in liquid form and it is the conductor of electricity.