Question # 1

The concept is also known as electron pair donor acceptor system.

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Bronsted Lowery

Lewis

Lux -Flood

Usanovich

Atomicity of which of the following pair of elements is not same as hydrogen.

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Phosphorus, Nitrogen

Nitrogen, Argon

Nitrogen, iodine

Iodine, sulphur

Which one of the following sets of elements has the strongest tendency to form negative ions in gaseous state.

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NA, Mg, Al

Ca, V, Cr

N , O, F

Ga, ln, tI

The structure of SO2 is

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Linear

Angular

V-shaped

Planner

Which of the following has the maximum tendency to form complexes.

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K

Na

Rb

Li

The bond along Sp2 hybridization is.

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180^o

120^o

109.5^o

160^o

Fluorine does not show variable oxidation state because of.

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its high electronegativity

Its small sixe

low dissociation energy of F-F bond

Non availability of d-orbitals

Lime water is an aqueous solution of.

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MgSO4

Ca (OH)2

CaCO3

CaSO4

An element having low IE and low EA is likely to belong to.

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Group IA

Group IB

Group VII A

Group VIII

Is an instate able colourles gas with a sticky sweet odor and is extremely toxic.

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B2 H6

B4 H10

B3 H9

B6 H10

The lightest alkali metal is.

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Lithium

Sodium

Rubidium

Caesium

In manufacturing of cement crystallization of amorphous dehydration products of clay

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500 ^oC to 800 ^oC

900 ^oC to 1200^oC

1250 ^oC ti 1400 ^oC

1000 to 1100 ^oC

What is the following is incorrect.

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Water is more polar than H2S

H2O2 is a planar molecule

Heavy water is produced by the exhauative electrolysis of water made acidic

H2O2 act both as oxidising as well as reducing agent in acidic medium

Pick out the ideal conditions needed for the manufacture of H2SO4 by contact process.

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Low temperature high pressure and high concentration of reactants

Low temperature , low concentration of reactants and low pressure

High temperature high pressure and high concentration of reactants

Low temperature, low pressure and high concentration of reactants.

The Lewis structure of which of the following does not have coordinate bond.

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SO2

HNO3

H2SO4

HNO2

Group IV A consist elements.

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3

4

5

6

The valence shell electronic configuration of group III A is.

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ns1 p2

ns2 p1

ns3p2

ns2p2

In which of the following characteristics does hydrogen resemble halogens.

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Hydrogen is the lightest gas

H atoms contains one electron each

Hydrogen forms ionic hydrides with alkali metals

Hydrogen has three isotopes.

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

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He

Ne

Argpm

Both He and Ne

H2SO4 is used

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In the preparation of aqua regia

In the purification of gold and silver

In the dental filling

None of above

Monel metal is a alloy of Ni which constrains Ni uptown

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50%

60%

70%

80%

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