Question # 1

Which of the following range is correct for macro analysis.

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Minimum 100 mg

Minimum 10 mg

Minimum 1 mg

Minimum 1000 mg

The equilibrium constant value for a chemical reaction is 5 x 10²⁰which of the following statement is true with respect to this value.

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Reaction will be reversible

Reaction will proceed in backward direction

Reaction is at equilibrium

Reaction will proceed in the forward direction

Which of the following group reagent is used for III group of basic radical.

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Dilute HCl

H2S + HCl

NH4OH + NH4Cl

NH4OH + H2S

Which property is used in volumetric methods of analysis.

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Density

Viscosity

Volume

Molar volume

The property associated in thermometric tittration is

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Change in weight

Rate of change in weight

Heat evolved or absorbed

Change in temperature

Which of the following element is usually determined by flame photometry.

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Li

Na

K

All above elements

Which of the following devoice is used to measure potential difference between celctrodes.

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Polarimetre

Conductometer

Voltmeter

Photometer

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

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

The process of determining amounts of each of the components in a sample of matter is termed as.

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Gravimetric analysis

Coulometric analysis

Quantitative analysis

Qualitative analysis

Which of the following physical property forms the basis of radio chemicals methods of analysis.

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Absorption of light

Emission of light

Radioactivity

Thermal conductivity

Which of the following technique is the application of voltammetry at a fixed potential to detect changes int he currents as a function of the concentrating of the analyte

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Amperometry

Coulometry

Polarography

Potentiomertry

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

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Conductometry

Refractometry

Coulometry

Potentiaometry

Which of the following techniques is used for cleanup of samples prior to introduction into chromatographic column.

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Paper chromatography

TLC

Solvnent extraction

Solid phase extraction

Both C and D

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 chloride is soluble in hot water.

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Hg2Cl2

AgCl

PbCl2

All above

Which of the following technique involves the bonding of hydrophobic functional group to solid particle, surface and acts as extracting phase

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Liquid phase extraction

Solid phase extraction

Electrophoresis

Gel electrophoresis

_{Which of the following salt is soluble in water.}

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BaCO3

SrCO3

CaCO3

K2CO3

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 techniques is used to reduce the need for large volumes of organic solvents.

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Solid phase extraction

Gel permeation

Electrophoresis

TLC

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

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