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The quinone is sulfonated with 20 per cent oleum in the presence of which catalyst?(a) Mercury sulfate(b) Magnesium sulfate(c) Chlorine(d) Zinc sulphateThe question was posed to me in a job interview.My query is from Technical Preparations topic in chapter Sulfonation and Sulfation of Unit Processes |
Answer» RIGHT answer is (a) Mercury sulfate The BEST EXPLANATION: Anthraquinone-I-sulfonate (POTASSIUM Salt), the quinone is sulfonated with 20 per cent OLEUM in the presence of mercury sulfate catalyst. |
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