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What are macromolecular colloids?...

What are macromolecular colloids?

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What are Multimolecular colloids?

What is the difference between multimolecular and macromolecular colloids ? Give one example of each. How are associated colloids different from these two types of colloids?

Give three differences between multimolecular colloids and macromolecular colloids.

Colloidal sol of sulphur is an example of multimolecular colloid while colloidal sol of starch represents macromolecular colloid. Difference between associated colloids, multimolecular and macromolecular colloids. Multimolecular colloids are formed by the aggregation of a large number of simple molecules, macromolecular colloids consists of macromolecules having size in the colloidal range. On the other hand, associated colloids also called micelles, are generally electrolytes. They exist as ions at low concentration. However, above a particular concentration called critical micelle concentration (CMC) and above a particular temperature called Kraft temperature, these get associated and exhibit colloidal behaviour. Soap is a common example of associated colloids. Define multimolecular colloid?

All colloids :

In multi-molecular colloids, the colloidal particles are an aggregate of atoms or small molecules with a diameter of less than 1 nm. The molecules in the aggregate are held together by van der Waal's forces of attraction: Examples of such colloids include gold sol and sulphur sol. In macro-molecular colloids, the colloidal particles are large molecules having colloidal dimensions. These particles have a high molecular mass. When these particles are dissolved in a liquid, sol is obtained. For example: starch, nylon, cellulose, etc. Certain substances tend to behave like normal electrolytes at lower concentrations. However, at higher concentrations, these substances behave as colloidal solutions due to the foirnation of aggregated particles. Such colloids are called aggregated colloids. What are aggregated colloids ?

In multi-molecular colloids, the colloidal particles are an aggregate of atoms or small molecules with a diameter of less than 1 nm. The molecules in the aggregate are held together by van der Waal's forces of attraction: Examples of such colloids include gold sol and sulphur sol. In macro-molecular colloids, the colloidal particles are large molecules having colloidal dimensions. These particles have a high molecular mass. When these particles are dissolved in a liquid, sol is obtained. For example: starch, nylon, cellulose, etc. Certain substances tend to behave like normal electrolytes at lower concentrations. However, at higher concentrations, these substances behave as colloidal solutions due to the foirnation of aggregated particles. Such colloids are called aggregated colloids. What is the size of multimolecular colloids?

What are protective colloids ?

OMEGA PUBLICATION-ALDEHYDES, KETONES AND CARBOXYLIC ACIDS -MULTIPLE CHOICE QUESTIONS
  1. What are macromolecular colloids?

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  2. In the following reaction, product P is R - overset(O)overset(||)C -...

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  3. Rosenmund's reduction of an acyl chloride gives

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  4. The wavelength of a beam of light is 25 micrometer. What is its wavenu...

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  5. Which of the following compounds gives a ketone with Grignard's reagen...

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  6. Identify the product Y in the sequence. CH3 CHO + CH3 MgBr overset(...

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  7. Which of the following reacts with NaOH to produce an acid and an alco...

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  8. Which of the following gives aldol condensation reaction?

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  9. CH3 - overset(O)overset(||)C - CH2 - CH3, overset(SeO2)to X + H2O here...

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  10. The following reaction is known as

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  11. What happens when ethanoyl chloride is reduced with H2 in the presence...

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  12. If formaldehyde and KOH are heated, then we get

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  13. The addition of HCN to carbony compounds ts an example of

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  14. Dimerisation in carboxylic acid is due to

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  15. Lower carboxylic acids are soluble in water due to

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  16. Carboxylic acids are more acidic than phenols and alcohols because of

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  17. CH3 COCl can be obtained directly by reacting PCl5 with

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  18. HCOOH reacts with conc. H2SO4 to produce

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  19. The reaction RCH2 CH2 COOH underset(Br2) overset("Red P")to R - CH2-...

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  20. C6H6+CO + HCl overset("Anhy"AlCl3) to X + HCl Compound X is

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  21. The chemical reaction of acetaldehyde and ammonia gives

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