Question # 1

The most reactive alkali metal among the following is

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Li

Na

Cs

Rb

Which of the following chemical strong oxidizing agent is used in COD test.

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KMnO4

H2SO4

CH3COOH

K2Cr2O7

Lother Meyer plotted a graph showing variation of.

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Atomic volume with increase in atomic number

Atomic volume with increase in atomic weight

Atomic redii with increase in atomic weight.

Atomic weight which increase in atomic number

On industrial scale chlorine is prepared by

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Dennis method

Deacon's process

Plantner's process

Aludels process

Which of the following statement is not correct with respect to limitations of Hammett equation.

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It is only applicable to aromatic systems

Only applicable to aliphatic systems

It is not valid for m-substituent

The Lambert beer law states that

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Transmission is directly proportional to path length

Transmission is directly proportional to concentration

Absorbance is inversely proportional to transmission

Absorbance is directly proportional to concentration.

SO2 acts as

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Lewis base

Lewis acid

Botha A and B

None of above

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

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BaCO3

SrCO3

CaCO3

K2CO3

Which of the following physical properties is employed int he analytical methods.

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Electric current

Transition temperature

Surface tension

All above

Hot isostatic pressing is not a viable option if the chief criterion is

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Strength without gram growth

Lost cost

Zero porosity

Make it hard

Which one of the following is not formed when an electric discharge passes through helium.

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HeH+

HeH2+

He2+

He2-

Which of the following does not belong in the group of herocyclic dyes.

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Acridine

Cyanine

Methylene blue

Amido black

Which of the following is not a general property of amino acids.

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They have high m.p. and b.p

They are soluble in water

Their dipole moments are high

They are amorphous solids

The Langmuir adsorption iso therrn shows that the amount of adsorbed gas per gram of the solid is equal to.

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ap/1+bp

ap+1/1-bp

1+ap/1-bp

a(1+bp)

Duralumin is an alloy of.

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Mg + AI

Ai+ Mg+Mn

Mg + Ai + Cu

Mg + Ai + Cu + Mn

Which of the following health effect is caused by mercury.

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Nerve damage

Brain damage

Kidney damage

All above

Complete hydrolysis of nucleotide result in the formation of.

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Heterocyclic bases

A pentose

A phosphate ion

All of these

Polyethylene Glycols are used in the preparation of which tye of detergetns.

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Cationic detergents

Anionic detergents

Non ionic detergent soaps

None of above

Which element amongst the following has the highest boiling point.

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Na

Mg

Ca

K

Which of the following statements is false about enantiomers.

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Rotate plane of polarized light

Are superimposable mirror images

Nbonsuperimposable mirror images

All of the above

Two solids A and B have appreciable different solubility in water but their m.p. are very close. The mixture A and B can be separated by.

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Sublimation

Distillation

Fractional crystallization

Specific rotation

The element having electronic configuration 1s2, 2s2, 3s2, 3p3 is.

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Trivalent only

Tetravalent only

Trivalent and pentavalent

Pentavalent only

Metal crystallize is system having co ordination number

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8

12

14

any one of above

Boric Acid is used

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In manufacture of pottery glaze

In medicine as an antiseptic

In tanning industry

All above

Which of the following is not a biodegradable polymer.

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Protein

PVC

Cellulose

Nucleic acid

Lime water is an aqueous solution of.

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MgSO4

Ca (OH)2

CaCO3

CaSO4

The rise of a liquid in capillary tube is due to.

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Osmosis

Diffusion

Surface tension

Viscosity

Dry distillation of amino acids with barium hydroxide yields.

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Acids

Amines

Alcohols

Hydroxy acids

An element having low IE and low EA is likely to belong to.

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Group IA

Group IB

Group VII A

Group VIII

The IUPAC name of ethylene oxide is.

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Epoxy methane

Oxcethene

Methoxymethane

All of the above

Which of the following health effect is caused by lead.

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Cancer

Neurotoxin

Hypertension

Kidney damage

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