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Surface Chemistry
Short Answer Type
191.
Define ultrafiltration.
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192.
Define peptization.
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193.
What is an adsorption isotherm?
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194.
On passing H
2
S gas through dilute HNO
3
the colourless solution becomes turbid, why?
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195.
What is the function of emulsifying agent?
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196.
Why are lyophillic sols self-stabilised?
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197.
What is sorption?
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198.
What happens when freshly prepared Fe(OH)
3
is shaken with a little amount of dilute FeCl
3
?
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199.
How can dialysis be made fast?
Answer:
The process of dialysis is quite slow it can be made faster by applying an electric field.
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200.
Explain the following term giving a suitable example: Emulsification.
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