Question # 1

Which of the following analytical technique is used for the separation of an interfering substance or analyte from the mixture.

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Precipitation

Distillation

Electrode position

All above these

Which of the following acid radical gives chromyl chorate test.

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F-

I-

Cl-

Br-

A trace constituent is one whose amount in the sample is.

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< 10%

< 010%

< 1.0%

< 0.01 %

Which of the following gas is not used as carrier gas in GC.

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Argon

Nitrogen

Helium

CO2

Which of the following techniques is used to separate a mixture of cations.

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GC

FPLC

Ion exchange chromatography

Size exchange chromatography

The separation efficiency of a column can be expressed in terms of number of.

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Solvents used

Theoretical plates

Stationary phases

Mobile phases

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 electrode is normally used as reference electrode for a potentiometer.

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Platinum electrode

Calomel electrrode

Silver electrode

Copper electrode

Which of the following technique is used to separate substance of high molecular weight of different charges.

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Dialysis

Electrophoresis

Solvent

None of the abvoe

The term accuracy refers to how near the observed value is to.

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Mean value

Low value

True value

Standard value

Both C and D

Suppose a sample is analyzed for a particular constituent by two different method One can tell whether the two average values are significantly different by applying which of the following test.

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Student's test

F test

Chi square test

Variance

In reverse phase chromatography which of the analyte will be eluted more readily.

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Polar

Non polar

Semi polar

All above

Which of the following technique is useful to remove metal ions from an interfering matrix.

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Solvent extraction

Electrophorests

Cataphorests

Gel permeation

The instrument used for measuring fluorescence is known as.

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Fluorimeter

Potentiometer

Flame photometer

Mass spectrometer

Which of the following technique is not related to instrumental analysis.

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Optical method

Colorimetry

Polarography

Gravimetric analysis

Which of the following is not a component of AAS.

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Hollow cathode lamp

Burner

Detector

Tungsten lamp

The absorbance is directly proportional to the path length in the flame and to the concentration of atomic vapor in flame is a statement of.

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Lambert's law

Beer's law

Honery's law

Starke law

Which of the following is the best indicator for titration of CH3COH with NaOH

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Methyl orange

Methyl red

Phenophthalein

Eosin

The current voltage characteristics forms the basis of.

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Thermal analysis

Potentiometry

Polarography

Colorimetry

Which of the following anionic species is not separated by gravimetric analysis.

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Cl-

SO4

CH3COO-

PO4

Potentiometry is based on the measurement of which physical property.

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Electrical conductance

Electrical potential

Thermal conductance

Current

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