Question # 1

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

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SO2

HNO3

H2SO4

HNO2

Which of the following metals form volatile carboyl with CO below 80^oC

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Cu

Fe

CO

Ni

The green colour of glass is due to the presence of.

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Chromium (III)

Cobalt (II)

Mn (IV)

Iron(III)

Of the molecules, SF4, XeF4, and CF which has square planar geometry.

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SF4, XeF4 and CF4

Sf4 only

CF4 only

XeF4

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

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Soddy

Slater

Fajan

Linus pauling

In German Silver copper is alloyed with which metal.

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Zn

Ni

Ai

Zn and Ni

Phosphorus has the oxidation state of +3 in

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Orthophosphoric acid

Hypophosphoric acid

Metaphosphoric acid

Orthophosphorus acid

Which of the following statements is not true about potash alum.

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Its empirical formula is KAI (SO4)2 12H2O

Its aqueous solution is basic in nature

It is used in dyeing industry

On heating it melts in its water of crystallization

Duralumin is an alloy of.

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Mg + AI

Ai+ Mg+Mn

Mg + Ai + Cu

Mg + Ai + Cu + Mn

Main constituent of all inorganic matter

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Carbon

Silicon

Tin

Lead

Electron gas theory is able to explain

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Metallic lusture and optical properties

Malleability and ductility

High electrical and thermal conductivity

All of the above

Boron does not form B3+ ion because.

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It has small size and high ionization energy

It has high electromagnetically

It has high charge density

None of the above

The valence shell electronic configuration of group III A is.

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ns1 p2

ns2 p1

ns3p2

ns2p2

Which is not an ore of aluminium.

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Baxuite

Cryolite

Monazite

Corundum

Xenon diflouride is obtained by irradiating a mixture of xenon and fluorine with light from a high pressure.

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Mercury arc

Tungeston arc

Xenon arc

None of above

The bonding of transition metal complex was not well understand until the pioneer work of.

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Ps JAISWAL

GS MANKU

BR thukral

Alfred Weriner

In the formation of H2O molecule, the oxygen atom makes use of.

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2p orbitals

sp hybrid orbitals

Sp2 hybrid orbitals

Sp3 hybrid orbitals

Which one of the following is not formed when an electric discharge passes through helium.

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HeH+

HeH2+

He2+

He2-

Borax exist in the form

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Ordinary borax

Octahdral borax

Borax glass

All above

Of the molecules, SF4 Xe F4 and CF4 which have square planar geometry.

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SF4 , Xe f4 and CF4

SF4 only

CF4 only

XeF4 only

A^o or 10 Dq is called crystal field.

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Energy

Splitting energy

Stabilization energy

None of above

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