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प्रश्न
Why does bleeding stop by rubbing moist alum?
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उत्तर
Blood is a colloidal solution when we rub moist alum on that part it causes coagulation which stops bleeding.
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संबंधित प्रश्न
Comment on the statement that “colloid is not a substance but a state of substance”.
Write one difference in Multimolecular colloid and Associated colloid
Define the following with a suitable example, of each:
Gel
Choose the correct option.
The size of colloidal particles lies between ______.
Distinguish between lyophobic and lyophilic sols.
Write a note on Brownian motion.
Draw labelled diagram Tyndall effect.
Draw labelled diagram Dialysis.
Which of the following is multimolecular colloid?
Identify the CORRECT statements from the following.
i. The colour of colloidal dispersion depends on size of colloidal particles.
ii. Tyndall effect is used to distinguish between colloidal dispersion and true solution.
iii. Eosin and congo red are examples of negatively charged sols.
In coagulation of positively charged ferric hydroxide sol, the most and least effective ions are ____________ and ____________ respectively.
The precipitation power of an electrolyte increases with ______.
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. \[\ce{NO^-_3}\]
Which of the following is NOT true for lyophilic colloids?
Mixing of two oppositely charged sols leads to ____________.
Which of the following is multimqlecular colloid?
Which of the following compounds forms a colloidal solution when dissolved in water?
Cloud is an example of
The migration of dispersion medium under the influence of an electric potential is called ______.
Identify the colloidal molecule containing hydrophilic head and hydrophobic tail within it.
