Question # 1

Naphthalene, iodine and NH_{4 can :}

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Sublime.

Both (a) and (c).

Crystallize.

None of above.

Direct conversion of solid intro vapours is called:

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Crystallization

Sublimation

Obligation

Vapourization

The tip of funnel should be 1 or 2cm larger than the circle of the

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Beaker

Solid

Filter paper

Liquid

The filtration process is used to separate solid from:

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Liquid

Gas

Solid

All of above

In chromatography, the point at which solvent maximum rises called:

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Solvent front

Base line

Element

Chromatogram

The tip of the funnel should touch the side of the beaker in order to avoid

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Splashing

Leakage

Mixing

Contamination

95% ethanol is called:

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Rectified other

Diesel

Rectified spirit

Petrol

Chromatography is derived from Greek word 'Khromatos' means:

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Type writting

Printing

Color writing

Writing

Selection of filter paper depends upon sizes of particles to be:

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Tested

^Filtered

Checked

All of above

The liquid obtained after passing the mixture through filter paper is termed as :

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Extract.

Residue.

Filtrate.

Sample.

Gooch crucible is made of:

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Brass

Porcelain

Bronze

.Gold

Sintered glass is porous material used for:

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Absorption

Decoration

Filtration

All of above

The sample being analyzed is called

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Electrolyte

Substance

Analyte

All of above

The detection of functional group is called:

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Numerical analysis

Qualitative analysis

Quantitative analysis

Combustion analysis

The solid remained on filter paper during the filtration is called the :

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Substance.

Residue.

Undue.

Filtrate.

The solid remained on filter paper during filtration is called the

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Substance

Residue

Undue

Filtrate

In CCL4 solvent I3 shows:

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Blue Color

Brown Color

Purple Color

Pink Color

The detection of functional group is called

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Numerical analysis

Qualitative analysis

Combustion analysis

Quantitative analysis

The solution left after the formation of crystals is called :

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Residue.

Filtrate.

Mother liquor.

None of these.

Analytical chemistry is the science of :

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Chemical Characterization.

Physical Characterization.

Biological Characterization.

Biochemical Characterization.

Solvent extraction is an unstable,Process and it is controlled by:

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Alcohol extraction

Petrol extraction

Phenol extraction

Ether extraction

Without proper suction filtration is

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Rapid process.

Fague process.

Slow process.

Useless process.

The filtration process is used to separate solid from

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Liquid

Gas

Solid

All of above

Fluted filter paper is used to:

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Decrease rate of filtration

Increase rate of filtration

Maintain rate of filtration

None of above

Without proper suction,filtration is:

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Rapid process

Fague process

Slow process

Useless process

Identification of a substance, determination of its structure and quantitative analysis of its composition are the aspects covered by

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Modern analytical physics

Mechanical chemistry

Biochemistry

Modern analytical chemistry

Solvent extraction method is a particularly useful technique of separation when the product to be separated is:

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non-volatile or thermally unstable.

volatile or thermally stable.

non-volatile or thermally stable.

volatile or thermally unstable.

A suitable solvent should dissolve maximum amount of solute at its boiling point and minimum amount at :

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Freezing point.

Room temperature.

Boiling point.

Sea level temperature.

The apex angle of the folded filter paper is slightly greater is termed as:

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60 degree

30 degree

45 degree

90 degree

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