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JEE Main20209 Jan 2020Morning ShiftChemistryp Block Elements (Group 13 & 14)Actual

‘ X ’ melts at low temperature and is a bad conductor of electricity in both liquid and solid state. X is:

Options

  1. Azinc sulphide
  2. BMercury
  3. CSilicon carbide
  4. DCarbon tetrachloride

Correct answer

D. Carbon tetrachloride

Step-by-step solution

Carbon tetrachloride boils at low temperatures and is a non-conductor in both solid and liquid phases. Carbon tetrachloride is made up of individual covalently bonded molecules, CCl 4 . Therefore, the electrons cannot flow and there are no ions. So it does not conduct in any state.

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