JEE · NEET Previous Year Question

Which of the following salt solutions would coagulate the colloid solution formed when is added to NaOH solution, at the fastest rate?

Topic: JEE PYQ

Answer: A. Full step-by-step solution below.

  1. A10 mL of 0.2 mol
  2. B10 mL of 0.1 mol
  3. C10 mL of 0.1 mol
  4. D10 mL of 0.15 mol

Correct answer: A

Solution

(a)
Sol. Formed is negatively charged solution, therefore has highest coagulating power

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