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NTA Abhyas 2020
Exam
NTA Abhyas
Year
2020
Subject
Chemistry
Chapter
Surface Chemistry

NTA Abhyas 2020 · Chemistry · Surface Chemistry

Colloidal sulphur is obtained when

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

HNO3HN{O}_{3} oxideses H2S{H}_{2}S to S\text{S}, which is obtained in colloidal form

H2S+2HNO3→S+2NO2+2H2O{H}_{2} \text{S} + 2\text{H}\text{N}{O}_{3} \to \text{S} + 2\text{N}{O}_{2} + 2{H}_{2} \text{O}
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