Q33 / 48 · NTA Abhyas (JEE Main) 2020 · Chemistry · Surface Chemistry

Colloidal sulphur is obtained when

  • A
    sulphur is heated gradually to high temperature
  • B
    sulphur is heated with dilute sulphuric acid
  • Correct answer
    C
    hydrogen sulphide is passed through an aqueous solution of nitric acid
  • D
    sulphur is warned with carbon disulphide

Solution

HNO3 oxideses H2S to S , which is obtained in colloidal form

H 2 S+2HN O 3 →S+2N O 2 +2 H 2 O

Hence, the correct answer is option: 'C'.

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