Question # 1

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 materials is not suitable as adsorbent for chromatography.

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Silica gel

Activated charocal

Alumina

Calciu7m chloride

Potentiometry is based on the measurement of which physical property.

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Electrical conductance

Electrical potential

Thermal conductance

Current

Which of the following acid radical give organic layer test.

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Cl-

CO3

I

S^2-

The relative populations of gourd state and excited state populations at a given flame temperature can be estimated using.

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Boltzmann distribution law

Maxwell law

Lambertie law

Beer's law

Which of the following technique describes titrations in which a standard iodine solution is need.

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Iodometry

Iodimetry

potentiometry

Argentometry

Which of the following basic process is involved in the separation of the complex mixture by chromatographic techique.

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Partition

Adsorptions

Ion exchange

All of the above processes

Which of the following method of analysis is based on diffraction of radiation.

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Mass spectrometry

Polarography

Potentiometry

Raman scattering

Which of the following statement is not related with the advantages of TLC.

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A variety of adsorbents can be used

The thickness of adsorbent can be varied

Fluorescence can be introduced

Different detectors can be used

Which of the following technique is based on deposition of the analyte at appropriate electrode by the passage of the electric current.

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Chromatography

Dialysis

Electrodeposition

Solvent extraction

Which of the following is not an acid radical

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Cl-

Br-

K+

I-

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 of the following extract is used for wet tests of acid radicals.

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Calcium carbonate extract

Sodium iodide extract

Sodium carbonate extract

Ammonium carbonate extract

The chemical method of separation in which the analytes to be separated are distributed between two phases, one of which is stationary phase while the other moves in a definite direction This technique is known as.

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Electrophoreals

Chromatography

Solvent extraction

Catachreals

TLC belongs to which of the following chromatographic techniques.

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Ion exchange

Partities chromatography

Adsorption chromatography

Gel permeation

In TGA, the width loss curve depends on the which instrumental factors.

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Furance heating rate

Recording or chart speed

Furnace atmosphere

All

Which of the following technique is based on the absorption of light radiation.

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Spectrophotomerty

Colorimetry

NMR

All the above technique

Which of the following technique is used for separation of volatile components.

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GC

HPLC

FPLC

TLC

Which of the following acid radical is not interfering.

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Phosphate

Borate

Flouride

Sulphate

Thermocouples have been constructed from

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Chromel ve elumel

Copper vs platinum

Both

None

Deviation in a particular measurement is the difference between the measured value and the average value The arithmetic mean of the different deviations observed in several measurements of the same quantity is known as.

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The standard deviation

The average deviation

Relative mean deviation

variance

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