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JEE Advanced levelOne or more correct optionsDifficulty 3 of 3df054

Select ALL correct statements about titanium carbide, TiC, and similar interstitial compounds.

  1. AThey are chemically inert towards most acids
  2. BMetallic conductivity is retained
  3. CTheir composition always follows the normal valence of the metal
  4. DThe melting point is higher than that of titanium metal

Answer: A, B, D

Carbon in the interstices increases hardness and melting point, the metal electron sea gives conductivity, and the compounds are resistant to chemical attack. They are non-stoichiometric in general and do not follow normal valence rules, so the last option is false.
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