Question # 1

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 statements is not related with flame photometric analysis.

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Vaporization of the solvent leaving back the residue

Conversion of solid slat to the gaseous state

Dissociation of gaseous molecules into free atoms

Measurement of the intensity of absorbed tradition

Which of the following salt is colourless.

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Zn salt

Co salt

Ni salt

Mn salt

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 salt is green in colour

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Mn salt

Cr salt

Co salt

Ba salt

The number of significance figures in the number 80.7 is.

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1

2

3

4

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

The exchange equilibrium in gas chromatography depends on.

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Solubility or absorbability of he sample

The polarity of he stationary phase and analyte

The degree of H bonding

All above factors

If a chemical reaction in equilibrium is subjected to a change the reaction tends to more in such a direction that the effect of the change would be neutralized This is a statement of.

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Law of mass action

Le Chatlier's principle

Henery's law

Correspondence principle

Which of the following technique is most sanative one.

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Photomerty

AAS

Flame photometry

Flourimetry

Which of the following detector is used in HPLC system.

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Differential refractometer detector

UV detector

Diode array detector

All above

Which of the following techniques involve gas as the mobile phase.

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HPLC

GLC

TLC

Paper chromatography

Which of the following is not a ligand or complexing agent.

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NH3

CH3COOH

EDTA

CN-

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

An acid base titration involves a neutralization reaction in which an acid is reacted with an equivalent amount of base The titrant is always a strong acid or base The analyte may be

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Strong acid

Strong base

Weak acid and Weak base

All above

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

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Polarimetre

Conductometer

Voltmeter

Photometer

The branch of chemistry which deals with the analysis of chemical products is known as.

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Physical chemistry

Organic chemistry

Inorganic chemistry

Analytical chemistry

Which of the following species is not a basic radical.

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Ag+

Cl-

Ba2+

K+

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