Question # 1

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

Dry ice is

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Solid CO

Solid CO2

Solid NH3

Solid SO2

Which of the following statement is not correct.

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The element with highest IE belongs to group 18

In each period the element with lowest IE belongs to group I

In each period the element with highest IE is a noble gas

In the second period as we move from left to right, ionization energy increases reqularly.

Which type of elements form ionic hydrides.

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Transitionelements

Metalloids

Elements with high electronegativity

Elements with high electropositivity.

The decreasing order of the second ionization energies of K, Ca and Ba is

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K > Ca > Ba

Ca > Ba > K

Ba > K > Ca

K > Ba > Ca

The bond along Sp2 hybridization is.

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180^o

120^o

109.5^o

160^o

Setting of plaster of Paris volves.

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Oxidation with atmospheric oxygen

Combination with atmosphere CO2

Dehydration

Hydration to yield another hydrate

Which of the following iso -electronic ion would require least energy for the removal of electron.

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Ca2+

Cl-

Ar-

K+

Which of the following ahs non zero dipole moment.

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NH3

SF6

BF3

CO2

In the purification of bauxite , the ore is fused with sodium carbonate in the process

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Baeyer's process

Hall's process

Serpeck's process

Any of above

In whihc period, the element with least ionization enthalpy belong to

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Group I

Group 2

Group 17

Group 18

Aluminium halides is.

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White crystalline solid

Hygroscopic

Sublimes at 180^oC

All above

The ionic product equilibrium constant is.

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Ka

Kb

Kc

Kw

Diamond and carbon are the _________ forms of carbon

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Isotropic

amorphous

Allotropic

Isomeric

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

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15%

25%

35%

50%

Ca2+ is isolelectronic with.

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Mg2+

Kr

Ar

Na+

The rusting of iron is catalyzed by which of the following.

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Fe

H+

O2

Zn

On the basic of CFT the bonding between the metal and ligand is totally

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Ionic

Covalent

Coordinate

Metallic

The size of iso electronic species - F- , Ne, and Na+ is affected by

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Nuclear charge (Z)

Valence principal quantum number (n)

Electron electron interaction in the outer orbital

None of the factors because their size to the same.

The formula of Borax is.

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Na2B4O7 6H2O

Na2B4O7 8H2O

Na2B4O7 10H2O

Na2B4O7 12H2O

Which of the following has the greatest metallic character.

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Na

Mg

Al

Si

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