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JEE Advanced levelSingle correct optionDifficulty 3 of 3pb070

Red-hot coke is treated with steam to give water gas, and then all the formed is reacted with more steam (). Starting from 1 mol of carbon and assuming complete conversion in both steps, the gas mixture finally contains

  1. A1 mol and 1 mol
  2. B2 mol and 2 mol
  3. C2 mol and 1 mol
  4. D2 mol and 1 mol

Answer: C

Step 1: gives 1 mol and 1 mol . Step 2: the 1 mol of gives 1 mol and 1 further mol . The total is 2 mol and 1 mol .
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