IIT JEE Questions And Answers :: Surfaces And Catalysis: part1



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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