Question # 1

Which of the following hydroxide is getatinous in nature.

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Fe(OH)3

Al(OH)3

Ca(OH)3

Cr (OH)3

Which of the following statements is not correct with respect to errors in flame photometry.

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Errors rising form the phenomena developed in the Hollow cathode lamp

Background effect

Errors arising from test element itself

Spectral interference

Which of the following is not a component of a gas chromatography system.

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Carrier gas

Capillary column

Packed column

Cathode lamp

Which of the following physical properties is employed int he analytical methods.

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Electric current

Transition temperature

Surface tension

All above

Which property is used in volumetric methods of analysis.

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Density

Viscosity

Volume

Molar volume

Which of the following source is commonly used as excitation source in fluorimeter.

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Tungsten lamp

Mercury vapour lamp

Nernst vapur lamp

Radio souse

Which of the following methods is the most common method for separation of liquid components from a mixture.

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Dialysis

Solvent extraction

Precipitation

Distillation

Complexing reactions are useful for which of the following method of analysis

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Gravimetry

Spectrophotometry

Interfering ions masking

All of the above

In order to increase the rate of the reaction one should.

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Increase the concentration of products

Decrease the concentration of reactants

Decreases the concentration of products

Both C and D statement are correct

Which of the following is a thermometric method.

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TGA

DTA

DTG

All

If the values of standrd deviations for the first and second method differ, then which of the following test helps one to know whether this difference is significant.

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Student's test

F-Test

Chi square test

Standard deviation

Which of the following acid radical give organic layer test.

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Cl-

CO3

I

S^2-

Which of the following method is used to separate small molecules form the larges molecules from the larger molecules in diffusing through a membrane.

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Dialysis

HPLC

FPLC

TLC

Which of the following acid radical gives chromyl chorate test.

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F-

I-

Cl-

Br-

Conductometry is based on

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Electric current

Electrical potential

Absorbance

Electrical conductance

Which of the following analytical method is used for the separation of dissolved components from solutions.

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Chromatography

Dialysis

Solvent extraction

Distillation

Which of the following is not a component of hollow cathode lamp.

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Anode

Cathode

Filter gas

Atomic vapour

Which of the following technique is most sanative one.

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Photomerty

AAS

Flame photometry

Flourimetry

Which of the following interaction is involved in solid phase extraction technique.

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Van der Waals forces

Dipolar attraction

H bonding

All of above

Which of the following steps is not involved in chemical analysis.

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Separation of sample in pure form

Separation of the sample in the mixture form

Preparation of sample for the analyisis

Validity of experimental results

NH4OH in the presence of H2S is used as a group reagent for which of the following group.

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Group I

Group II

Group III

Group IV

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