Question # 1

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 hydroxide is getatinous in nature.

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Fe(OH)3

Al(OH)3

Ca(OH)3

Cr (OH)3

TLC belongs to which of the following chromatographic techniques.

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Ion exchange

Partities chromatography

Adsorption chromatography

Gel permeation

The titration involving oxidation reduction reactions is called.

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Complex titration

Simplex titration

Redox titration

Acid base titration

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

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Argon

Nitrogen

Helium

CO2

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

Which of the following detector is used in GC analysis

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Thermal conductivity detector

Flame ionization detector

Mass spectrometer

All above

Which of the following metal ion cannot be catimated by gravimetric analysis.

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K+

Ca²⁺

Al3+

Zn2+

Which of the following technique is most sanative one.

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Photomerty

AAS

Flame photometry

Flourimetry

Amino acids are are important in biochemistry which of the following statements is not correct regarding amino acids.

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These are amphoteric substances tend to undergo internal protein transfer

In aqueous solutions these substances tend to undergo internal proton transfer

These for zwitter ion in aqueous medium

These always contain two amino groups.

Which of the following radical is not a member of III group

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Al³⁺

Fe²⁺

Ca²⁺

Fe³⁺

Which of the following technique in current voltage technique

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Amperometry

Voltammetry

Poteatiomertry

Polarography

Which of the following analytical technique is based on the refraction of radiation.

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Conductometry

Refractometry

Coulometry

Potentiaometry

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 combination is used to make buffer.

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NaOH and HCl

KOH and H2SO4

CH3COOH and CH3COONa

CH3COOH and NH4OH

Gravimetric method is based on which of the following property.

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Volume of a liquid

Volume of gas

Mass of substance

Viscosity

Which of the following is not a component of flame photometer.

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Pressure regulator and flow meter

The atomizer

The burner

Hallow cathode lamp

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

Which of the following species is very poor oxidizing agent

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H+

Zn²⁺

Fe³⁺

MnO₄

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

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Spectrophotomerty

Colorimetry

NMR

All the above technique

The digits which are necessary to express the result of a measurement to the precision with which the measurement is made are called.

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Non significant figures

Mathematical figures

Significant figures

Reagent errors

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