Question # 1

The comparative rates at which the solutes move in paper chromatography depends on.

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The size of paper used

Their Rt values solutes

Temp of the experiment

Size the chromate grapic tank

In solvent extraction, solute can be separated from solution, by shaking the solution with solvent in which the solute is.

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More soluble

Partially soluble

Insoluble

soluble at high temp

Solvent extraction is an equilibrium process and it is controlled by

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Law of mass action

The amount of solvent used

Distribution law

The amount of solute

Chromatographic technique is very useful for

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Isolation

Purification

separation

All of them

Safe and reliable method of drying crystals is through.

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Pressing it between folds of filter paper

Drying it in oven

Evaporation of solution

Vacuum desiccator

Chromatography in which the stationary phase is a solid is classified as.

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Partition chromatography

Gas chromatography

Adsorption Chromatography

Thin layer chromatography

Which one of the following substances is not used as drying agent in desiccators.

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Calcium chloride

Phosphorus pentoxide

Silica gel

50% NaCl

When hot saturated solution is cooled very rapidly, we get

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Medium sized crystals

large sized crystals

Premature crystallization of the substance

Old crops of crystals

Gooch crucible is made of.

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Glass

Paper

Teflon

Procelain

Solvent extraction is an equilibrium process and it is controlled by.

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Law of mass action

The amount of solvent used

Distribution law

The amount of solute

The comparative rates at which the solutes move in paper chromatography depend on.

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The size of paper used

Rf values of solutes

Temperature of the experiment

Size of the chromatographic tank used

Large value of distribution coefficient K means.

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Component of solute dissolved large in mobile phase

Components of solute do not dissolve in mobile phase

Components of solute remains at original spot

All statements are correct

The drying agents used in desiccator is.

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BeCl2

MgCl2

CaCl2

SrCl2

The iodine present in water can be separated by which one of the following techniques

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Sublimation

Chromatography

Filtration

Solvent extraction

The drying agent used in a desiccator.

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Agcl

NH4Cl

P2O5

AlCl3

In paper chromatograghy the point at which the solvent rises to maximum extent is called

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Event

Chromatogram

Solvent front

Base line

A filtration process could by very time consuming if it were into aided by a gentle suction which is developed.

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If the paper covers the funnel upto its circumference

If the paper has got small sized pores in it.

If the stem of the funnel is large so that it dips into the filtrate

If the paper fits tightly

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