Question # 1

The boiling point of water is unexpectedly high because.

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H2O molecule in linear

Sp3 hydrogen bonding is involved in the formation of water

There is hydrogen bonding and consequent association of H2O molecules.

Oxygen is the first member of the VI group

The central metal atom or ion and the ligands that are directly attached to it are enclosed in a square bracket called.

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Coordiantion complex

Coordination sphere

Coordination number

Coordination compounds

Arrhenius concept explained

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Constant heat of neutralization

Quantitative determination of acid base strength

Catalytic property of acid

All above

Ammonia is utilized for

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Manufacture of urea

Oxidation to nitric acid

Manufacture of ammonium sulphate

All above

In German Silver copper is alloyed with which metal.

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Zn

Ni

Ai

Zn and Ni

The noble gases which does not I do not form any clathrates is.

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He

Ne

Argpm

Both He and Ne

Which of the following pairs shows diagonal relationship

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Li and Mg

Na and K

Zn and Cd

Li and BE

Which of the following have identical bond order.

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CN- and O2-

CN - and NO+

O2- and CN+

NO+ and CN+

Which metal burns in air at high temperature with the evolution of much heat.

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Cu

Hg

Pb

Al

Which of the following has the highest melting point.

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NaCl

KCl

MgO

BaO

Which of the following statements correct regarding copper.

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It is used in electroplating

Its salts are used as insecticides

Its salts are used as coloring materials

All are correct

Mostly used solvents for ionic compounds.

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Liquid ammonia

Liquid SO2

Liquid HF

All above

[Ti(OH2)6]3+ gives colour

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Green

Red

Purple

Blue

Which of the following compounds combines with hemoglobin.

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CO2

CO

NO

N2

An ionic compound X + Y - is most likely to be formed if

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Ionization enthalpy of X is high electron gain ethalpy of Y is low

Ionization enthalpy of X is high electron gain enthalpy of Y is high

Ionization enthalpy of X is low,electron gain enthalpy of Y is low

Ionization enthalpy of X is low electron gain enthalpy of Y is high

Which of the following configuration of an ionic species represents psedue noble gas configuration.

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ns2 np6

ns2 np6 nd 10

ns2 np3

ns2

The polarity of bonds can lead to polarity of molecules and affect

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Melting point

Boiling point

Solubility

All of above

Which of the following is not known.

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KrF6

XeF6

XeO3

KrF2

What % if nickel is present in the major ore Pentlandite.

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22%

18%

14%

10%

Aluminium does not corrode as does iron because.

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AI does not react with O2

a-protective layer of Al2O3 forms on the metal surface

AI is harder to oxidize than is Fe

Fe gives chathodic protection to AI

B.P of heavy water is

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equal to that of ordinary water

greater than that of ordinary water

Less than that of ordinary water

equal to that of distilled water

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