Question # 1

The formula of sulphur sequioxide

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SO4

S2O7

S2O3

SO3

Drying agent which react with CO2 and removes water vapours is.

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CaO

CaCl2

CaCO3

Ca(NO3)2

Explosive trioxide XeO3 is produced when

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XeOF4 reacts with water

XeOF4 reacts with silica

XeF4 reacts with water

Any of above statements

Hydrogen bond is not electrostatic in nature is stated by

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Electrostatic approach

Valence bond approach

Molecular orbital approach

None of the abvoe

Which of the halogens has lowest bond energy.

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Cl2

Br2

F2

I2

Ammonia is utilized for

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Manufacture of urea

Oxidation to nitric acid

Manufacture of ammonium sulphate

All above

Chromium is found in nature in the the form of.

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Oxides

Silicates

Borates

Sulphides

CFT was originally applied to.

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Ionic crystal

Liquid crystal

Solid crystal

All above

A colorless gas with pleasant odour and sweet taste.

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N2O

N2O3

NO

N2O4

Which of the following have identical bond order.

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CN- and O2-

CN - and NO+

O2- and CN+

NO+ and CN+

The pH Value 4.2 is of

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Vinegar

Lemons

Oranges

Tomatoes

BCl3 is an example of hybridization

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sp

sp2

sp3

None of above

Which of the following property is not related to aluminum.

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it is silvery white metal with brilliant lusture

It is a very light metal with specific gravity as 2.7

It is good conductor of heat

It is the least reactive element of III Group.

Which element amongst the following has the highest boiling point.

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Na

Mg

Ca

K

VBT does not edplain

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Absorption spectra

Color of transition metal ion

Heat of formation

All above

"Acids are substance whose aqueous solutions turned blue litmus red and tasted sour" stated by

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Davy

Liebig

Boyle

Rouelle

iodine is used as

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Tincture of iodine

Iodex and antiseptic

Treatment of goiter

All above

In Dannis's method the end of the copper caps into which graphite electrode are fixed with cement.

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Portiant

Bakelite

Asbestos

All of above

In the long form of periodic table, elements are arranged according to.

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Increasing atomic number

Decreasing atomic number

Increasing atomic mass

Decreasing atomic mass

Phosphorus normally exhibit a covalency of.

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+1 and +2

+2 and +3

+3 and +4

+4 and +5

The ionic product equilibrium constant is.

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Ka

Kb

Kc

Kw

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