JEE Main 2017 · 8 Apr · Shift 1 · Chemistry Q31

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ChemistrySingle correct+4 / -1Question 31 of 90

Among the following, correct statement is :

Brownian movement is more pronounced for smaller particles than for bigger-particles.

Sols of metal sulphides are lyophilic.

Hardy Schulze law states that bigger the size of the ions, the greater is its coagulating power.

One would expect charcoal to adsorb chlorine more than hydrogen sulphide.

Answer and worked solution

Official answer: A

Brownian motion is more vigorous for smaller particles. The others are wrong: metal sulphide sols are lyophobic; by the Hardy-Schulze rule coagulating power grows with the ion's charge, not its size; and the more easily liquefied $\ce{H2S}$ is adsorbed more than $\ce{Cl2}$ .

Topics:Colloids Adsorption

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JEE Main 2017 · 8 Apr · Shift 1, Chemistry question 31