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प्रश्न
Comment on the statement that “colloid is not a substance but a state of substance”.
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उत्तर
Common salt (a typical crystalloid in an aqueous medium) behaves as a colloid in a benzene medium. Hence, we can say that a colloidal substance does not represent a separate class of substances. When the size of the solute particle lies between 1 nm and 1000 nm, it behaves as a colloid.
Hence, we can say that a colloid is not a substance but a state of the substance, which is dependent on the size of the particle. A colloidal state is intermediate between a true solution and a suspension.
संबंधित प्रश्न
Define the following with a suitable example, of each:
Gel
Choose the correct option.
The size of colloidal particles lies between ______.
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- milk
- blood
- printing ink
- fog
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Explain Bredig’s arc method.
Draw labelled diagram Tyndall effect.
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The order of coagulating power of following ions in the coagulation of a positive sol is:
i. \[\ce{PO^{3-}_4}\]
ii. \[\ce{SO^{2-}_4}\]
iii. \[\ce{[Fe(CN)6]^{4-}}\]
iv. \[\ce{NO^-_3}\]
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Which of the following can form colloidal sol with water?
Which of the following is multimqlecular colloid?
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How do emulsifying agents stabilise the emulsion?
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Identify the correct decreasing order of precipitation power of flocculating ion added, from following.
