JEE Main 2021 (Online) 27th August Morning Shift | Surface Chemistry Question 37 | Chemistry

JEE Main 2021 (Online) 27th August Morning Shift

MCQ (Single Correct Answer)

-1

Acidic ferric chloride solution on treatment with excess of potassium ferrocyanide gives a Prussian blue coloured colloidal species. It is :

Fe₄[Fe(CN)₆]₃

K₅Fe[Fe(CN)₆]₂

HFe[Fe(CN)₆]

KFe[Fe(CN)₆]

JEE Main 2021 (Online) 27th August Morning Shift

MCQ (Single Correct Answer)

-1

Tyndall effect is more effectively shown by :

true solution

lyophilic colloid

lyophobic colloid

suspension

JEE Main 2021 (Online) 26th August Evening Shift

MCQ (Single Correct Answer)

-1

The sol given below with negatively charged colloidal particles is :

FeCl₃ added to hot water

KI added to AgNO₃ solution

AgNO₃ added to KI solution

Al₂O₃.xH₂O in water

JEE Main 2021 (Online) 26th August Morning Shift

MCQ (Single Correct Answer)

-1

Which one of the following is correct for the adsorption of a gas at a given temperature on a solid surface?

$$\Delta$$H > 0, $$\Delta$$S > 0

$$\Delta$$H > 0, $$\Delta$$S < 0

$$\Delta$$H < 0, $$\Delta$$S < 0

$$\Delta$$H < 0, $$\Delta$$S > 0

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