Multiple choice

Which of the following acids is/are used for preparing TNT and dynamite?

  1. Sulphuric acid
  2. Hydrochloric acid
  3. Nitric acid

  1. Only 1

  2. Only 3

  3. Only 1 and 2

  4. None of these
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

In an industry, TNT is produced in a three-step process. First, toluene is nitrated with a mixture of sulphuric and nitric acid to produce mononitrotoluene (MNT). The MNT is separated and then renitrated to dinitrotoluene (DNT). In the final step, the DNT is nitrated to trinitrotoluene (TNT) using an anhydrous mixture of nitric acid and oleum. Nitric acid is consumed by the manufacturing process, but the diluted sulphuric acid can be reconcentrated and reused. 

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