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

NTA Abhyas 2020 · Chemistry · Surface Chemistry

The disperse phase in colloidal iron (III) hydroxide and colloidal...

The disperse phase in colloidal iron (III) hydroxide and colloidal gold is positively and negatively charged, respectively. Which of the following statements is NOT correct?

Options

  1. AMagnesium chloride solution coagulates, the gold solution more readily than the iron (III) hydroxide solution
  2. BSodium sulphate solution causes coagulation in both the solutions
  3. CMixing of the solutions has no effect
  4. DCoagulation in both solutions can be brought about by electrophoresis

Correct answer

C. Mixing of the solutions has no effect

Step-by-step solution

Opposite charges attract each other. Hence on mixing, coagulation of two solutions may take place.
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