Medium
Which one of the following does not involve coagulation?
- AClotting of blood by the use of ferric chloride
- BFormation of delta region
- CTreatment of drinking water by potash alum
- DPeptization
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What is the cause of the stability of lyophilic colloids?
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View SolutionThe process which is responsible for the formation of a delta at a place where rivers meet the sea is
$20 \ mL$ of $0.5 \ M \ NaCl$ is required to coagulate $200 \ mL$ of $As_2S_3$ sol in $2$ hours. The coagulating value of $NaCl$ is $...........$.
Match List-$I$ with List-$II$ and select the correct option:
List-$I$ List-$II$ $I$. Colloidal antimony $A$. Kala-azar $II$. Silver sol $B$. Intramuscular injection $III$. Milk of magnesia $C$. Eye lotion $IV$. Gold sol $D$. Stomach disorder
| List-$I$ | List-$II$ |
| $I$. Colloidal antimony | $A$. Kala-azar |
| $II$. Silver sol | $B$. Intramuscular injection |
| $III$. Milk of magnesia | $C$. Eye lotion |
| $IV$. Gold sol | $D$. Stomach disorder |
$A$ sample of red ink (a colloidal solution) is prepared by mixing eosin dye,egg white,$HCHO$ and water. The component which ensures stability of the ink sample is :-
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