Question # 1

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 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

A component having small value of K mostly remains in the.

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Stationary phase

Mobile phase

Chromatographic tank

Solvent

The crystallization of a solid substance is done from a hot saturated solution. The solution is

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Evaporated rapidly

Cooled very slowly to get good crystals

Cooled rapidly to get excellent crystals

Mixed with another miscible solvent

Solvent extraction method is particularly useful technique for separation when the product to be speared is.

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Non volatile or thermally unstable

Volatile or thermally stable

Non volatile or thermally stable

Volatile or thermally unstable

Gooch crucible is made of.

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Glass

Paper

Teflon

Procelain

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 is controlled by.

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Law of mass action

The mount of solvent used

The amount of solute

Distribution law

Which one is not example of a sublimate.

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NH4Cl

I

NaCl

Benzoic Acid

When i₂present in the aquous layer in the form of I^-1₃foes to CCI₄layer, then the change in colour is from

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Purple to brown

Purple to green

Green to brown

Brown to purple

During paper chromatography, the stationary phase is.

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Solid

Liquid

Gas

Plasma

Chromatography in which stationary phase is a solid is called.

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Partition chromatography

Paper chromatography

High pressure liquid chromatography

Adsorption chromatography

The substance used for decolorization of crystalline substance is

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G2O5

Chloroform

Animal charcoal

Soda ash

NaCI and sand can be separated by one of the following without filtration

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Formation of solution and filtration

Formation of solution and evaporation without filtration

Sublimation

Chromatiograghy

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

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

During the process of crystallization, the hot saturated solution.

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Is cooled very slowly to get large sized crystals.

Is cooled at a moderate rate to get medium sized crystals

Is evaporated to get the crystals of the product.

Is mixed with an immiscible liquid to get the pure crystals of the product.

Solvent extraction method is particularly useful technique for separation when the product to be separated is

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Non-volatile or thermally unstable

Volatile or thermally unstable

Non-volatile or thermally stable

Volatile or unstable

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