Question # 1

The sample being analyzed is called :

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Electrolyte.

Substance.

Analyte.

All of above.

95% ethanol is called :

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Rectified ether.

Diesel.

Rectified spirit.

Petrol.

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

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Extract

Residue

Filtrate

Sample

The reagents like KMnO_{4 and HCL cannot be filtered through Gooch crucible if its base is covered with :}

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Butterfly paper.

Ordinay paper.

Flying paper.

Filter paper.

The filtration process is used to to separate solid from :

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Liquid.

Gas.

Solid.

All of above.

During the process of crystallization, the hot saturated solution:

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is cooled very slowly to get large size crystals

is cooled at a moderate rate to get medium sized crystals of the product

is evaporated to get the crystals of the products

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

A complete chemical characterization of a compound must include

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Qualitative analysis

Chemical analysis

Quantitative analysis

Both a and c

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

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Splashing

Leakage

Mixing

Contamination

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

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Tested

^Filtered

Checked

All of above

A filtration process could be very time consuming if it were not aided by a gentle suction which is developed:

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If the paper covers the funnel up to its circumstances

If the paper has got small sized pores in

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

If the paper fits tightly.

The detection of functional group is called:

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Numerical analysis

Qualitative analysis

Quantitative analysis

Combustion analysis

The detection of functional group is called :

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Numerical analysis.

Qualitative analysis.

Combustion analysis.

Quantitative analysis.

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

Combustion analysis

Quantitative analysis

Sintered glass is porous material used for:

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Absorption

Decoration

Filtration

All of above

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

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60°

30°

45°

90°

The solid remained on filter paper during filtration is called the

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Substance

Residue

Undue

Filtrate

95% ethanol is called:

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Rectified other

Diesel

Rectified spirit

Petrol

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

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Modern analytical physics.

Mechanical chemistry.

Biochemistry.

Modern analytical chemistry.

Estimation of Na in sea water is an example of

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Numerical analysis

Qualitative analysis

Quantitative analysis

None of above

Direct conversion of solid into vapors is called :

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Crystallization

Sublimation

Obligation

Vaporization.

Chromatography is derived from Greek word 'Khromatos' means:

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Type writting

Printing

Color writing

Writing

Without proper suction,filtration is:

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Rapid process

Fague process

Slow process

Useless process

The sample being analyzed is called:

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Electrolyte

Residue

Undue

Filtrate

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

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the size of per sued.

R_f values of solutes

temperature of the experiment

size of the chromatography tank used.

The filtration process is used to separate solid from:

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Liquid

Gas

Solid

All of above

Without proper suction filtration is

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Rapid process.

Fague process.

Slow process.

Useless process.

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

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Substance.

Residue.

Undue.

Filtrate.

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

Analytical chemistry is the science of

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Chemical characterization

Physical characterization

Biological characterization

Biochemical characterization

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