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Colloidal sulphur is obtained when

Options

  1. Asulphur is heated gradually to high temperature
  2. Bsulphur is heated with dilute sulphuric acid
  3. Chydrogen sulphide is passed through an aqueous solution of nitric acid
  4. Dsulphur is warned with carbon disulphide

Correct answer

C. hydrogen sulphide is passed through an aqueous solution of nitric acid

Step-by-step solution

H N O 3 oxideses H 2 S to S , which is obtained in colloidal form H 2 S + 2 H N O 3 → S + 2 N O 2 + 2 H 2 O

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