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Write answers in one sentence each :
Who used th word 'catalyst' for first time ?

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**Step-by-Step Text Solution:** 1. The term 'catalyst' was first used by the chemist J. J. Berzelius. 2. Berzelius introduced the term in the early 19th century to describe substances that increase the rate of chemical reactions without being consumed in the process.
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PRADEEP-SURFACE CHEMISTRY -SHORT ANSWER QUESTIONS (IV. MISCELANEOUS)
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  2. Write answers in one sentence each : Why does colloidal particle sho...

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  3. Write answers in one sentence each : Cleansing action of soap is bas...

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  4. In reference of Freundlich adsorption isotherm, write the expression f...

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  5. Write an important characteristics of lyophilic sols.

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  6. Based on the type of particles in the dispersed phase and dispersion m...

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  7. Why does leather get hardened after tanning ?

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  8. Lyophilic sols are more stable than lyophobic sols because.

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  9. Give reasons for the observations : It is necessary to remove CO whe...

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  10. Differentiate between adsorption and absorption.

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  11. Out of MgCl2 and AICI3 which one is more effective in causing coagulat...

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  12. Out of sulphur sol and proteins, which one forms multimolecular colloi...

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  13. Write one difference in each of the following: (i) Lyophobic sol Lyo...

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  14. Write one difference between each of the following: (i) Multimolecul...

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  15. Write on difference in each of the following: (a) Multimolecular col...

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  16. Write the dispersed phase and dispersion medium of milk.

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  17. Write one similarity between physisorption and chemisorption.

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  18. Write the chemical method by with Fe(OH)(3) sol is prepared from FeCl(...

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  19. Define the following with an example each : (a) Lyophobic colloids ...

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