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Comment on the statement that colloid is...

Comment on the statement that colloid is not a substance but a state of substance.

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The given statement is true. This is because the same substance may exist as a colloid under certain condition and as a crystalloid under certain other conditions. For example, `NaCl` in water behaves as a crystalloid, while in benzene, it behaves as a colloid `(` called associated colloid`)`. It is the size of particles which matters, `i.e.,` the state in which the substance exists. If the size of the particles lies in the range `1nm` to `1000nm`, it is in the colloid state.
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Comment on the statement that " colloid is not a substance but state of a substance "

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Collidal solution is a heterogeneous solution which contains particle of intermediate size, i.e., (diameter between 1 and 1000 nm) colloidal is not a substance but it is a state of a substance which depends upon the molecular size. Colloidal solutions are intermediate between ture solution and suspensions. The colloidal particle can pass through

Collidal solution is a heterogeneous solution which contains particle of intermediate size, i.e., (diameter between 1 and 1000 nm) colloidal is not a substance but it is a state of a substance which depends upon the molecular size. Colloidal solutions are intermediate between ture solution and suspensions. The difference between a lyophilic and lyophobic colloid is their

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CENGAGE CHEMISTRY ENGLISH-NCERT BASED EXERCISE-NCERT Exercise
  1. What role does adsorption play in heterogeneous catalysis?

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  2. Why is a absorption always exothermic ?

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  3. How are the colloidal solutions classified on the basis of physical st...

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  4. Discuss the effect of pressure and temperature on the adsorption of ga...

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  5. What are lyophilic and lyophobic sols? Give one example of each type. ...

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  6. What is the difference between multimolecular and macromolecular collo...

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  7. What are enzymes?

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  8. State the observation when Table salt is added to hydrated ferric oxid...

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  9. What are emulsions ? What are their different types ? Give an example ...

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  10. How do emulsifying agents stabilise the emulsion?

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  11. Action of soap is due to emulsification and micellel formation. Commen...

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  12. Give four examples of heterogeneous catalysis.

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  13. What do you mean by activity and selectivity of catalysts?

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  14. Describe some features of catalysis by zeolites.

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  15. What is shape selective catalysis?

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  16. Explain the following terms: (i) Electrophoresis (ii) Coagulation ...

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  17. Give four uses of emulsions.

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  18. What are micelles? Given an example of micelle system.

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  19. Explain the terms with suitable examples: (i) Alcosol (ii) Aerosol (...

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  20. Comment on the statement that colloid is not a substance but a state o...

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