Surfaces And Catalysis QUESTIONS AND ANSWERS

IIT JEE : Surfaces And Catalysis QUESTIONS AND ANSWERS :: part1 : 16 to 20

Following IIT JEE Entrance Multiple choice objective type questions and answers will help you in Maths, Physics and Chemistry 2024 examinations :

16.Gelatin is mostly used in masking ice-cream in order to

prevent forming the colloidal sol

enrich the fragrance

prevent crystallisation and stabilize the mix

modify the taste.

17.In which of the following respcets the lyophilic sols do not differ from lyophobic sols ?

Stability

Reversibility

Particle size

Behaviour towards dispersion medium.

18.Which of the following is true for a Gel?

Solid as disperse phase

Liquid as dispersion medium

Both of the above

None of these.

19.Which of the following statements is not true for physisorption?

Extent of adsorption increases with increases in temperature

Heat of adsorption is generally between 20-40 kJ/mole

It is not specific

It undergoes desorption easily.

20.Butter is a colloid containing

Fat disperesed in water

Fat disperesed in oil

Water dispersed in fat

None of these.

More Surfaces And Catalysis QUESTIONS AND ANSWERS available in next pages

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