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JEE Advanced levelSingle correct optionDifficulty 3 of 3pb069

Carbon monoxide reacts with chlorine in the presence of light or charcoal to give a compound X. Complete hydrolysis of X gives acidic products. Which option correctly gives the shape of X and the products of its hydrolysis?

  1. ATetrahedral; and 2 mol per mol of X
  2. BTrigonal planar; and 2 mol per mol of X
  3. CLinear; and 1 mol per mol of X
  4. DTrigonal planar; and 2 mol per mol of X

Answer: B

gives phosgene. Carbon has three sigma bonds (one to O, two to Cl) and no lone pair, so it is and the molecule is trigonal planar. Hydrolysis is .
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