Question # 1

The magnitude of electron affinity depends on.

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Atomic size

Nuclear charge

Electronic configuration

All of the above

The pH Value 4.2 is of

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Vinegar

Lemons

Oranges

Tomatoes

Lithium shows diagonal relationship with

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Beryllium

Sodium

Magnesium

Calcium

The H2SO4 obtained by the contact process having purity

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70%

74%

78%

82%

Which of the following will exhibit variable electro Valency due to intert pair effect.

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Fe

Sn

K

Both Fe and Sn

Aluminium is used for.

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Making ultensile & framea

Making alloys

Reducing agent

All above

During the last two centuries, the atmospheric CO2 contents are increased by

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15%

25%

35%

50%

Give violet colour to flame

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Gallium

indium

Thallium

Aluminium

The value of Kw increase with temperature because the ionization of water.

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Positive

Negative

Endothermic

Exothermic

Among LiCl, BeCl2, BCl3, and CCl4 the covalent bond character follows the order.

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LiCl < Becl2< Bcl3 < CCl4

LiCl > BeCl2 < BCl3<CCl4

LiCl< Becl2 < BCl3 < CCl4

LiCl > Becl2 > BCl3 < CCl4

Which element among the following cannot exhibit variable electronvalency

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₂₉Cu

₅₀Sn

₂₅ Mn

₃₈ Sr

The colour of Ni2+ ion is.

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Blue

Green

deep green

Orange

Pick out the incorrect statement for SO2

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It turns filter paper moistened with acidified K2Cr2O7

It turns starch iodate paper blue

It does not react with chlorine in presence of charcoal

It decolourises acidified KMnO4 solution.

The electronegativity of phosphorus is.

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3.0

2.1

2.0

1.9

Monel metal is a alloy of Ni which constrains Ni uptown

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50%

60%

70%

80%

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

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

CFSE for d⁷ ion is.

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0.8

-0.8

-1.8

1.8

All the member of group III A are metals except.

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B

Ai

Ga

In

The concept is also known as proton donor acceptor system.

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Bronsted Lowery

Lewis

Lux Flood

Usanovich

Which one has a co ordinate bond.

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Al2Cl6

BF3

NaCl

O2

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