Question # 1

Which among the following is insoluble in water.

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LiOH

KOH

NaOH

RbOH

Which of the following term refers to nearness between several measurements of the same quantity.

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Accuracy

Precision

Standard error

Standard error of mean

A type of a chemical bond which is formed by the mutual sharing of electrons between combining atoms of the same or different elements is called.

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Ionic bond

Covalent bond

Co ordinate Covalent bond

Metallic bond

The oxidation number of Mn in KMnO4

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+5

+7

+4

+3

A red color gas, on condensing ti gives a dark blue liquid.

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NO

N2O

N2O3

N2O4

Which of the following is not alloy of aluminium.

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Aluminium bronze

Magnalum

Duralumin

Stellite

Which statement is true.

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Resonance hybride are inherently unstable.

Resonance hybride are more static than any individual resonance form

Resonance hybride are average of all resoance forms resembling the more stabel forms

None of the above

The principal quantum number determines the overall size of the orbital and energy of the electron when it is associated with the orbital.It may have the values.

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n = 1,3,5.........infinity

n= 2,4,6................infinity

n = 1,2,3,4..............infinity

None of the abvoe

The noble gas used or treatment of cancer is

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Helium

Argon

Radon

Krypton

What is the ratio of the maximum load in a tension test to the original cross sectional area of the test bar.

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Tensile strength

Yield strength

Shear strength

Torsion

Which of the following statements is not related with entropy.

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It is a measure of disorder

It is a measure of unavailable energy

It is a function of thermodynamics probability

It is a path function

The expected specific wastes of textile industry is

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Cloth residue

Fibre residue

Dyes

All above

Which type of the solids are generally good conductors of electricty.

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Covalent

Ionic

Metallic

Molecular

Which two atoms of hydrogen combine to form a molecule of hydrogen gas. the energy of the hydrogen molecule is.

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Higher than that of separate H atoms

Equal to that of separate H atoms

Lower than that of separate H atoms

Sometimes lower and sometimes higher than that of separate H.

In the kinetic study of a reaction A _____________ products.

A straight line was observed when a graph between time and 1/C2 was plotted. the reaction is.

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Second order

First order

Third order

Zero order

The different layers in graphite are held together by

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Ionic bonding

Metallic bonding

Covalent bonding

Van der Waals forces

Which of the following is not a chemical pollutant.

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Solid waste

Noiso

Insecticides

Liquid waste

Which of the following is an example of molecular solids.

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MgO

ZnO

Ice

Graphite

Sanger's reagent is

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Carbobenzyloxy chlride

Dimethyl amino sulphonyl chloride

I-Fluoro -2,4-dinitrobnzene

2,4- Dinitrophenyl hydrazine

Hydrometallurgy of copper involves extraction of copper from poor ores by which process.

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Dry process

Wet process

Both dry and wet process

None of these

At constant temperature and pressure, the decrease in Gibbs free energy (F) in equal to

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Increase in entropy

Decrease in entropy

Reversible work done by the system

All types of work except the work of expansion

_________ is used as stablizer.

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CaO

SiO2

NaCl

None of these

Dyes used in photographic plates to make them panchromatic is.

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Cyanine dyes

Azine dyes

Phthalocyanine dyes

Acridine dyes

Which name is associated with the rules which help in predicting the portability of anion.

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Soddy

Slater

Fajan

Linus pauling

Metallic bond is treated essentially as in character

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Ionic

Covalent

Polar

Non polar

The number of vibrational degree of freedom for CO2 is

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2

3

4

5

A 2M solution of H2SO4 would have how many moles of H+ ion in one liter

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1.0

2.0

4.0

5.0

In a period, the element with biggest electron affinity belong to.

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Group 1

Group 2

Group 17

Group 18

A drop of a liquid acquires spherical shape because of.

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Its viscous nature

Capillary action

The tendency to acquire minimum surface are

Its shape

The simplest formula of a compound containing 50% of element X

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XY2

XY

X2Y

None of the abvoe

The phase rule was deduced by

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Gibbs

Thomson

Troution

Henry

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