Question # 1

Which one of the following pairs are chemically dissimilar.

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Na and K

Ba and Sr

Zr and HF

Ca and Zn

The expected specific wastes of textile industry is

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Cloth residue

Fibre residue

Dyes

All above

The molar mass of an organic acids is determined by

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Depression of freezing point

Elevation of boiling point

Volumetric method

Victor Myer's method

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

Which of the following is not a characteristic of covalent compound.

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They have low melting and boiling points.

They ionize on dissolution in polar solvents

Their molecules have definite geometry

They are generally insoluble in water

Which of the following statements is not correct.

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The conductance of one cm3 of a material is called specific conductance

Specific conductance increase while equivalent conductance decreases on progressive dilution

The limiting equivalent conductance of weak electrolytes cannot be determined by extrapolation of the plot of A against concentration

The conductivity of metals is due to the movement of elctrons.

The dye obtained from madder root

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Indogotin

Indanthrene

Alizarin

Acriflavin

Which type of the coal preferred for metallurgical coal.

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Lignite

Peat

Bituminous coal

None of these

What is defined as a local corrosion damaged characterized by surface cavities.

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Cracking

Pitting

Cavitation

Corrosion

Which of the following gas form weakly acidic sulphurous acid

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SO2

SO3

NO2

NO

Which of the following is a source of energy but does not cause pollution.

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Gaslone

Nuclear power plant

Fossil fuels

Sun

Which of the following compounds shows optical activity

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Lactic acid

Maltose

Glucose

All above

Which of the following is not an androgen i.e. male sex hormones.

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Androsterone

Testosterone

Oestrone

All of these are make hormone

When two bodies have equality of temperature with a 3rd body they in turn have equality of temperature with each other. This is a statement of.

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First law of thermodynamics

Zeroth law of thermodynamics

Second law of thermodynamics

Third law of thermodynamics

SO3 exists in form

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a -so3

b-SO3

gama SO3

All above

Which of the following device is used to measure the surface tension.

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Polarimeter

Viscometer

Refractometer

Stalagnameter

In diborane (B2H6)

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The structure is similar to that of C2H6

All the atoms are in one plane

The born atoms are linked through hydrogen bridges

There is a direct boron boron bond

At the some temperature 0.1 M solution of urea is isotonic with.

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0.1 M glucose solution

0.1 M NaCl solution

0.1 M urea solution

0.1 M BaCl2 solution

SO2 is generated from which of the following industry.

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Drying and packing

Paper

Pulp

paper and pulp

Which of the following sets of quantum number is possible for an electron in a 4f orbital.

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n = 4,l = 3, m = 4, s = +1/2

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

n = 4, l = 3, m = +1, s = -1/2

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

What is the ratio of stress to strain in a material loaded within its elastic ranger.

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Poisson’s ratio

Refractive index

Modulus of elasticity

None of above

The Langmuir theory of unimolecular adsorption is generally valid at.

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Low pressures and low temperature

Low pressures and high temperature

High pressures and low temperature

High pressure and high temperature

Which of the following class of compounds follow the criteria of aromatically.

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The compounds must have high degree of unsaturation

they must have the property to undergo addition reactions

They must have the property to undergo substitution reactions

They must have the ability to sustain an induced current in NMR

Zeigler Natta catalyst is.

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Pt/PtO

TiCl4/Al(C2H5)3

Pt/Rh

Pt

Which of the following is not a naturally occurring dye.

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Indogo

Indigotin

Alizarin

Malachite green

Noble gases are used in discharge tubes to give different colours. Raddish orange glow is due to.

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Ar

Ne

Xe

Kr

In a system of designating wrought aluminum alloys a sour digit number is used what does the first digit indicate.

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The purity of aluminum

The identity of the alloy

The alloy group

All of above

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

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Li

Na

K

All above elements

Types of carides

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Ionic carides

Covalent carbides

Interstitial carbides

All above

Transition metal possess

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Definite color

Catalytic power

Both A and B

None of above

The movement of an electric charge produce a magnetic field is known from the

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Elementary Physics

Elementary Chemistry

Both A and B

None of above

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