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what is hardy schulze rule ?
Give an example of protective colloid.
what is dispersed phase and dispersed medium
explain tyndall effect more deeply
A lump of coal burns at a moderate rate in air while coal dust burns explosively.why?
what is magneson reagent, what is its chemical formula and name ?
Lyophilic sols are more stable den lyophobic sols. Why???
Why is it generally preferable to use absorbance as a measure of absorption rather than % Transmittance?
Because %T is dependant on the power of the incident radiation
Because absorbance is proportional to the concentration of the analyte, whereas %T is not.
Because %T cannot be measured as accurately as absorbance
None of these are correct
what happens when glucose is treated with bromine water ??
what is residual force?
which of the following electrolytes is most effective for the coagulation of Fe(OH)3 sol and why?
What is bulk phase?
Q3. Differentiate between peptization and coagulation.
what is platinised asbestos???????????????
what do we mean by activity n desorption??????????????/// pls help............
what is Bredig's Arc method?
difference between physisorption and chemisorption
what is the difference between partial hydrolysis and complete hydrolysis?
which of the following is most effective in coagulation of As2S3 sol?
Na3PO4, MgCl2, CaCl2, AlCl3
what is haber's process????????
What is shape selective
Distinguish between Freundlich adsorption isotherm and Langmuir adsorption isotherm also by plotting graphs?
Adsorption is accompanied by : also explain
decrease in enthalpy of the system
increase in entropy of the system
increase in free energy of the system
increase in both enthalpy and entropy
I can't understand that when AgNO3 Is added to KI solution ,ppt. adsorbes I- ions leading to the formation of negatively charged colloidal solution ,but when KI is added to same AgNO3 solution ,then adsorption of Ag+ ion takes place ,why not I- get adsorbed in this case also?Kindly explain
Acryl nitrile is polymerised under anion or cationic conditions. Explain your choice.
which get adsorbed easily on charcoal?(NH3 or CO2)
What is the difference between gangue and non wettebility?
Explain what is
(i) When a beam
of light is passed through a colloidal sol.
electrolyte, NaCl is added to hydrated ferric oxide sol.
current is passed through a colloidal sol?
(1) What is meant by solvation of colloidal particle??
difference between inhibitors and promoters...
explain the relation between conductivity and molar conductivity of a solution?
How adsorption is an exothermic reaction..???
what is a stearate ion??
what causes brownian movement in a colloidal solution?
More easily liquefiable gases are adsorbed readily.
Please explain the reason for the above phenomenon.
If FeCl3 is added to excess of hot water, a postively charged sol of hydrated ferric oxide is formed due to adsorption of Fe3+ ions. However, when ferric chloride is added to NaOH, a negatively charged sol is obtained with adsorption of OH- ions. Why is there such a difference? Explain in detail.
difference between activators, inhibitors, promoters and co-enzymes.
Why is gelatine is added to ice-creams?
what is observed when an emulsion is subjected high speed centrifugation?
what is the composition of copper matte?
Why does physisorption decrease with increase in temperature?
Explain the formation of delta.
GIVE REASONS FOR THE FOLLOWING
A) colloids stabilize due to brownian movement.
B) cottrell's smoke precipitator is fitted at the mouth of chimney used in factories.
C) colloidal gold is used for intramuscular injection
explain :same substance can act both as colloids and crystalloids.(1 mark) ..... i've already seen the existing ans but not satisfied.
give some examples of neutral colloids, negatively and positively charged colloids
examples of lyophilic lyophobic sols
why hydrophobic sols are easily coagulated?
is it necessary to remove CO when ammonia is obtained by Haber’s
the vapour pressure of pure benzene at 25*c is 639.7 mm of Hg and vapour pressure of solute in benzene at the same temprature is 631.9 mm of Hg. calculate the molality
Comment on the statement colloid is not a substance but only state of substance.
wht is preferential adsorption of colloidal sol?explain
What is the difference between double displacement and double decomposition reactions? Or are they the same?
What is the difference between catalytic poison and negative catalyst?please tell me as early as u can?
What is an adsorption
isotherm? Describe Freundlich adsorption isotherm.
negatively charged sheaths around the globule prevents them from coming together and forming aggregates. what does this statement means????
( NCERT lines page:137)
WILL YOU PLEASE EXPLAIN ME THE HARDY-SCHULZE RULE IN DETAIL...?
what is flocculating ion
adsortion ,absorption,sorption is exothermic or endothermic.........n explain y is it ?
why solid solid is called sol and gas solid is also called sol???
Please explain the preferential adsorption of ions !!!!!!!!!!!!!!!!!!!!!!!!!! please reply as soon as possible...
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