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Recent questions tagged unit5

The coagulating power of an electrolyte for arsenious sulphide sol decreases in the order:

asked Mar 17, 2014 by mosymeow_1

1 answer

STEM stands for

asked Mar 17, 2014 by mosymeow_1

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The colour of a colloidal solution depends upon

asked Mar 17, 2014 by mosymeow_1

2 answers

A colloidal solution of gold in water is

asked Mar 17, 2014 by mosymeow_1

1 answer

The average particle mass in colloidal solutions can be determined by

asked Mar 17, 2014 by mosymeow_1

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The CMC of a given soap in water is $10^{-3}$ mol/L. A $10^{-4}$ mol/L solution of this soap in water is a

asked Mar 17, 2014 by mosymeow_1

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Gold numbers of protective colloids A, B, C and D are 0.50, 0.01, 0.05 and 0.005 respectively. The correct order of their protective powers is

asked Mar 17, 2014 by mosymeow_1

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Langmuir adsorption isotherm is deduced using the assumption.

asked Mar 17, 2014 by mosymeow_1

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The reactions given below, are the catalyst and corresponding process / reaction are matched, the mismatch is

asked Mar 17, 2014 by mosymeow_1

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A plot of $\log \;\dfrac{x}{m}$ versus $\log\; p$ for the adsorption of a gas on a solid gives a straight line with slope equal to

asked Mar 17, 2014 by mosymeow_1

1 answer

The number of moles of lead nitrate needed to coagulate 2 mol of colloidal $[AgI]I^-$ is

asked Mar 17, 2014 by mosymeow_1

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Which among the following statements are correct with respect to adsorption of gases on a solid?

asked Mar 17, 2014 by mosymeow_1

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The coagulation of 200 mL of a positive colloid took place when 0.73 g HCl was added to it without changing the volume much. The flocculation value of HCl for the colloid is

asked Mar 17, 2014 by mosymeow_1

1 answer

What is the equation form of langmuir isotherm under high pressure?

asked Mar 17, 2014 by mosymeow_1

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Which of the following is used to produce smoke screens?

asked Mar 17, 2014 by mosymeow_1

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Which of the following molecule is most suitable to disperse benzene in water?

asked Mar 16, 2014 by mosymeow_1

1 answer

Which of the following forms micelles in aqueous solution, above certain concentration?

asked Mar 16, 2014 by mosymeow_1

1 answer

The volume of a colloidal particle, $V_c$ as compared to the volume of a solute particle, $V_s$ in a true solution could be

asked Mar 16, 2014 by mosymeow_1

1 answer

In Zeigler-Natta polymerisation of ethylene the active species is

asked Mar 16, 2014 by mosymeow_1

1 answer

Milk can be preserved by adding a few drops of

asked Mar 16, 2014 by mosymeow_1

1 answer

Lucite is a polymer of

asked Mar 12, 2014 by thanvigandhi_1

1 answer

The monomer unit of PAN is

asked Mar 12, 2014 by thanvigandhi_1

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The starting material for PCTFE is

asked Mar 12, 2014 by thanvigandhi_1

1 answer

On heating ( with the below diagram ) with buta 1,3 diene results in the formation of

asked Mar 12, 2014 by thanvigandhi_1

1 answer

Which of the following are biopolymers?

asked Mar 12, 2014 by thanvigandhi_1

1 answer

The polymer used in orthopedic devices andin controlled drug release is

asked Mar 12, 2014 by thanvigandhi_1

1 answer

Glyptal polymer is obtained by treating glycerol with

asked Mar 12, 2014 by thanvigandhi_1

1 answer

Which is not a macromolecule?

asked Mar 12, 2014 by thanvigandhi_1

1 answer

Which persentage of sulphur is used in the vulcanisation ofrubber?

asked Mar 12, 2014 by thanvigandhi_1

1 answer

Chain transfer reagent is

asked Mar 12, 2014 by thanvigandhi_1

1 answer

Which of the following biodegradable polymer of polyamide class?

asked Mar 12, 2014 by thanvigandhi_1

1 answer

Which of the following polymers can be used for lubrication and as an insulator?

asked Mar 12, 2014 by thanvigandhi_1

1 answer

Formation of polythene from calcium carbide takes place as \[\] $ CaC_2+2H_2O \rightarrow Ca(OH)_2+C_2H_2$ \[\] $ C_2H_2+H_2 \rightarrow C_2H_4$ \[\] $ nC_2H_4 \rightarrow (- CH_2 - CH_2 -)n$ \[\] The amount of polythene obtained from 64.1 kg of $CaC_2$ is

asked Mar 12, 2014 by thanvigandhi_1

1 answer

Which of the following is is a polyamide?

asked Mar 12, 2014 by thanvigandhi_1

1 answer

Which is not a polymer?

asked Mar 12, 2014 by thanvigandhi_1

1 answer

Which of the following is a fully fluorinated polymer?

asked Mar 12, 2014 by thanvigandhi_1

1 answer

The trade name of polyacrilonitrile is

asked Mar 12, 2014 by thanvigandhi_1

1 answer

The number average molecular mass and mass average molecular mass of a polymer are respectively 30,000 and 40,000. The poly dispersity index of the polymer is

asked Mar 12, 2014 by thanvigandhi_1

1 answer

On controlled hydrolysis and condensation $R_3\: SiCl$ yields

asked Mar 12, 2014 by thanvigandhi_1

1 answer

Which one of the following polymer is used for making nonstick utensils

asked Mar 12, 2014 by thanvigandhi_1

1 answer

Acrylite is the commercial name of

asked Mar 12, 2014 by thanvigandhi_1

1 answer

The polymer used for the manufacture of paint and laqures is

asked Mar 12, 2014 by thanvigandhi_1

1 answer

Identiify the chain growth polymer from the following

asked Mar 12, 2014 by thanvigandhi_1

1 answer

Depending on the mode of synthesis polymers are classified into

asked Mar 12, 2014 by thanvigandhi_1

1 answer

PHBV IS an example for

asked Mar 12, 2014 by thanvigandhi_1

1 answer

Polymers are classified on the basis of structure in to

asked Mar 12, 2014 by thanvigandhi_1

1 answer

The presence of which of the following inhibit the free radical polymeisaation of a vinyl derivative?

asked Mar 12, 2014 by thanvigandhi_1

1 answer

How are polymers classified on the basis of source of availability

asked Mar 12, 2014 by thanvigandhi_1

1 answer

The given polymer belongs to

asked Mar 12, 2014 by thanvigandhi_1

1 answer

buna-S ,buna –N are

asked Mar 12, 2014 by thanvigandhi_1

1 answer

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