Surface Chemistry
The dispersed phase in colloidal iron (III) hydroxide and colloidal gold is positively and negatively charged respectively. Which of the following statements is not correct?
DoubtBuddy
Multiple Choice
The coagulation of sol particles may be brought about by:
Aheating
Baddition of oppositely charged sol
Correct Answer
Caddition electrolyte
Dpersistent dialysis
Correct Answer
Solution
Coagulation is the process by which a colloid precipitates out of a solution. The precipitation is brought about by induced aggregation, i.e., by addition oppositely charged sol and persistent dialysis but not by heating and addition of electrolyte.
SIMILAR QUESTIONS
Surface Chemistry
Which of the following electrolytes will have maximum coagulating value for $$AgI/Ag^+$$ sol?
Surface Chemistry
How can a lyophilic sol be coagulated?
Surface Chemistry
Alums purify muddy water by :
Surface Chemistry
The ability of an ion to bring about coagulation of given colloid depends upon
Surface Chemistry
Equal volume each of two sols of $$AgI$$, one obtained by adding $$AgNO_3 $$ to slight excess of $$KI$$ and another obtained by adding $$KI$$ to slight excess of $$AgNO_3$$ are mixed together . Then :
Surface Chemistry
Which of the following electrolytes will have maximum coagulating value for $$AgI/Ag^+$$ sol?
Surface Chemistry
The clouds consists of charged particles of water dispersed in air. Some of them are positively charged, others are negatively charged. When positively charged clouds come closer, they cause lightening and thundering whereas when positive and negative charged colloids come closer, they cause heavy rain by aggregation of minute particles. It is possible to cause artificial rain by throwing electrified sand or silver iodide from an aeroplane and thus, coagulation the mist hanging in air. AgI helps in artificial rain because :
Surface Chemistry
Alum helps in purifying water by
Contact Details
- community@doubtbuddy.in
- M3M Cosmopolitian, Sector 66, Golf Course Extension Road, Gurgaon
- Policy Terms