JEE Mains 2020 Model Paper 4 New Pattern

Question : 44 of 75

Marks: +1, -0

Which of the following is correct statement?

Spontaneous adsorption of gases on solid surface is an exothermic process as entropy decreases during adsorption
Formation of micelle takes place when the temperature is below Kraft temperature and the concentration above critical micelle concentration (CMC)
A colloid of Fe(OH)3 is prepared by adding a little excess of NaOH in FeCl3 solution the particles of this sol will move towards cathode during electrophoresis.
Coagulation value of Fe3+ is more than Ba2+ or Na+

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