Question # 1

Which of the following methods does not give the weight average molecular weight.

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Sedimentation equilibrium

Sedimentation velocity

Light scattering

Osmotic method

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 are anionic detergents.

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Sodium salts of sulfonated long chain alcohol

Ester of stearic acid and polythlene glycol

Quaternary ammonium salt of amine with acetate ion

Sodium salts of sulfonated long chain hydrocarbons

The common oxidation state of lanthanides is.

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+3

+2

+1

+4

During the titration of weak acid against NaOH the conductance of the solution after the neutralization point.

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Is constant

Decreases

Varies irregularly

Increase

A well packed column may hve

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100 plates /m

1000 plates /m

10 plates /m

10,000 plates/m

Albumin is classified as

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Simple protein

Conjugated protein

Lipoprotein

Derived protein

Aluminium hydroxide is.

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An acid

An amphoteric hydroxide

A base

An explosive hydroexide

Valence bond theory is also called as

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Electron pair theory

Band theory

Electron gas theory

Electron pool theory

CFT can very well explain

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Color

Magnetic properties

Spectra of transition metal

All

The maximum absorption in [Ti(OH)2)6 3+ take place at wavelength of.

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4000 A^o

5000 A^o

6000 A^o

10000 A^o

The most stable oxidation state shown by lead is.

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+2 , +4

+2 only

+3 , +4

+4 only

The hardest material found in nature is

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Steel

Topaz

Diamond

Quartz

The element with atomic numebr greater than 100 are known as

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Trans uranium elements

Trans fermium elements

Actinides

Lanthanides

1-Chlorobutane on reaction with alcohols potash gives.

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1- butane

1-butanol

2- butane

2- butanol

The IUPAC name of ethylene oxide is.

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Epoxy methane

Oxcethene

Methoxymethane

All of the above

Which of the following impurities are present with the bauxite.

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Silica

Ferric oxide

Alumina

Both silica and ferric oxide

The capacity of normal human eye to see the smallest object is _______ micro meter

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10000

1000

100

10

Steel is an alloy of iron and carbon with limits on the amount of carbon to less than _______ percent.

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2

3

1

4

Which of the following species is determined by complex metric titrations.

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K+

Na+

Ca+

Cl-

The hardness of water i s due to the presence of dissolved soluble salts of.

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Calcium

Megnesium

Iron

All above

Relative order of acidity of oxy acid

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HCIO > HCIO2 > HCIO3 > HCIO4

HCIO4 > HCIO3 >HCIO2 > HCIO

HCIO3 > HCIO2 > HCIO > HCIO4

HCIO2 > HCIO4 > HCIO3 > HCIO

Number of unpaired electrons in Cu2+ ions are.

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1

2

3

4

Fluorine does not show variable oxidation state because of.

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its high electronegativity

Its small sixe

low dissociation energy of F-F bond

Non availability of d-orbitals

Organic farming is the technique of raising crops through uses of.

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Manures

Biofertilizers

Resistant varieties

All of these

Which of the following sets of quantum number is possible.

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n = 4, l = 3, m = -3 ,s = 0

n = 4, l = 0, m = 0, s =+1/2

n = 4, l = 4, m = -4, s = -1/2

None of these

a-terpioneol is obtained on hydration of which of the following with dilute H2SO4.

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Citral

Myrcene

Linalool

Limonene

Alumina is not used as

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Refractory material

A medium in chromatography

An abrasive

A White pigment

Which of the following statement about molecularity is not correct.

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It cannot be fraction

It can be obtained from balanced equation

It may be or may not be equal to the order of the reaction

it can not be more than 3

Which of the following statements in not correct with respect to the important characteristics of aromatic compounds.

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They are usually cyclic compounds

They are resistant to usual addition reactions

They usually undergo substitution reactions

They are less stable

What ASTM test for tension is designated for plastics.

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A 370

D 638

E 292

None of these

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