Question # 1

Which of the following is not an ore of Cr.

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Chrome iron

Nicollite

Crocisite

Chrome ochre

Who prepared and explained nano tubes for the first time.

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Sumio Tijima

Richard Smaley

Erick Drexler

Richard Feynamann

Which of the following acids acts as acid waste from coal mines.

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HCl

HNO3

CH3COOH

H3PO4

The product obtained on heating n-heptane with Cr2O3 ____Al2O3 at 600 ^oC is.

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Cycloheptane

Methyl cyclohexane

Benzene

Teluene

What is a measure of rigidity?

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Stiffiness

Jardmess

Strength

Modulus of elasticity

How many oxygen atoms lined up in a now would fit in a one nanometer speace.

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None an oxygen atoms is bigger than 1 nm

One

Seven

None of the above

Which of the following glass transmits the maximum light.

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Serrated glass

Clear glass

Milk glass

Opalescent glass

Wlhich of the following can act as a protective colloid

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Gelatin

Silica gel

Oil in water emulsion

All three

The orientation of a crystalline surface is confidently defined in terms of.

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Lijima Indices

Miller indices

Clausen indices

None

The osmotic pressure of a solution with definite composition.

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Varies directly as the volume and temperature.

Various inversely as the temperature.

Varies inversely as the volume and directly as the temperature.

None of the above

Albumin is classified as

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Simple protein

Conjugated protein

Lipoprotein

Derived protein

Fertilizers are classified into

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Two major categories

Three major categories

Four major categories

None of above

Which one of the following ionsis colourless.

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Cu+

Ni2+

Co2+

Fe3+

Which of the following statement is not related with environmental pollution.

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Direct or indirect change in any component of the biosphere

Undesirable change in the physical characteristics of the air

Undesirables change in the biological characteristics of the soil

not affecting adversely the industrial progress

The steroid which plays an important role in carbohydrate metabolism is.

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Oestrone

Progestrrone.

Androsterone

Cortisone

Which of the following steps is not involved in chemical analysis.

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Separation of sample in pure form

Separation of the sample in the mixture form

Preparation of sample for the analyisis

Validity of experimental results

Retarded reaction are those

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In which the rate of the reaction is independent of pressure

In which products are strongly adsorbed on the surface of the solid catalyst

Which are reversible under all conditions

For which G is positive

Concentrated aqueous sodium hydroxide can separate a mixture of.

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Al3+ and Sn2+

Al3+ and Fe3+

Al3+ and Zn2+

Zn2+ and Pb2+

Which of the following statement is not correct with respect to electrometric effect.

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It is permanent effect

It is brought into play instantaneously at the demand of attacking reagent

It proceeds a polar addition reaction

The original electronic condition is restored after the removal of tacking regent.

The volume of a given mass of gas at constant temperature varies inversely with the pressure. This is a statement of.

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Charlea's law

Avogadro's law

Boyle's law

Dalton 's law

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 is not an extensive property.

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Work

Entropy

Free energy

Volume

A property which gradually increases on moving down group in the periodic table is

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Ionization enthalpy

Elemtronegativity

Electron affinity

atomic size

Which of the following substance is not present in acid rain.

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Sulphuric acid

Nitric acid

Acetic acid

Sulphurous acid

Which of the following liquids has lowest vapour pressure at 25 ^oC

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Benzene

Chloroform

Ether

H2O

The common oxidation state of lanthanides is.

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+3

+2

+1

+4

CCl4 has zero dipole moment because of.

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Planar structure

Tetrahedral structure

Similar size of C and Cl atoms

Similar electrons affinity of C and Cl

Volta metric technique using a dropping mercury electrode is called.

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Amperometry

Coulometry

Polarography

Potentiometry

Enfleurage process is ued to extract the essential oils from

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Bark of plant

Seeds of plant

Leaves of plant

Flowers of plant

In the metallurgy of iron, when limestone is added to the blast furnaced, the calcium ion ends up in

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Slag

Gangue

Metallic calcium

Calcium carbonate

Nitric acid has the property

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Nitrating

Reducing

Redoxing

None of above

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