Multiple Choice QuestionsWhich property of colloidal solution is independent of charge on the colloidal particles?
Coagulation
Electrophoresis
Electroosmosis
Tyndall effect
D.
Tyndall effect
Coagulation is generally brought about by the addition of electrolytes. When an electrolyte is added to a colloidal solution, the particles of the sol take up the ions which are oppositely charged. As a result, their charge gets neutralised.
Electrophoresis: The movement of colloidal particles under an applied electric potential is called electrophoresis. Electroosmosis may be defined as a phenomenon in which the molecules of the dispersion medium are allowed to more under the influence of an electric field whereas colloidal particles are not allowed to more.
Tyndall effect is the scattering of light by sol particles, which cannot be affected by change on them
In Duma's method for estimation of nitrogen 0.25 g of an organic compound gave 40 ml of nitrogen collected at 300 K temperature and 725 mm pressure. If the aqueous tension at 300 K is 25 mm the percentage of nitrogen in the compounds is,
17.36
18.20
16.76
15.76
The function of 'sodium pump' is a biological process operating in each and every cell of all animal. Which of the following biologically important ions is also a constituent of this pump?
Ca2+
Mg2+
K+
Fe2+
softner
dryner
buffering agent
antiseptic
The electrolytic reduction of nitrobenzene in strongly acidic medium produces
p-aminophenol
azoxybenzene
azobenzene
aniline
In which of the following compounds, the C-Cl bond ionisation shall give most stable carbonium ions?
The reaction,
is called,
Williamson synthesis
Williamson continuous etherification process
Etard reaction
Gattermam -Koch reaction
A single compound of the structure is
obtainable from ozonolysis of which of the following cyclic compound?
Treatment of cyclopentanone 
methyl lithium gives which of the following species?
Cyclopentanonyl anion
Cyclopentanonyl cation
Cyclopentanonyl radical
Cyclopentanonyl biradical
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