Question # 1

Used in producing intense light in cinematography

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Xenon

Krypton

Radon

Helium

Artificial nitrogen fixation may occur by the formation of.

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Nitric acid

Ammonia

Nitrides

Any of above

The only oxidation state of alkali metals in their compounds is.

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+1

+2

-1

0

According to SHAH concept the Lewis bases were classified on the basis os.

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Charge ion size

Polarization consideration

Electron and co coordinating ability

All of above

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

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Melting point

Boiling point

Solubility

All of above

The process requirieng the absorption of energy of.

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F = F

Cl = Cl

H = H

O = O

Nitric acid has the property

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Nitrating

Reducing

Redoxing

None of above

The correct increasing order of bond dissociation energy for N2, O2, F2 and Cl2 is

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N2 < O2 < F2 < Cl2

F2 < Cl2 < O2 < N2

F2 < Cl2 < N2 < O2

N2 < Cl2 < F2 < O2

Hydrometallurgy of copper involves extraction of copper from poor ores by which process.

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Dry process

Wet process

Both dry and wet process

None of these

Amorphous boron on burning in air form

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B(OH)3

Only B2O3

Only BN

Mixture of B2O3 and BN

All the member of group III A are metals except.

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B

Ai

Ga

In

Which one of the following elements shows the most stable oxidation state of +1

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AI

Ga

In

TI

Keeping in view the periodic law and periodic table, suggest which of the following elements should have maximum electronegative character.

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Oxygen

Nitrogen

Fluorine

Astatine

The types of coordinate compounds.

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Labila

Inert

Both A and B

None of above

The common oxidation state of elements of group V A is.

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-3

+3

+5

Any above

Zinc oxide is.

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A basic oxide

An amphoteric oxide

An acidic oxide

A neutral oxide

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

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Ionic

Covalent

Coordinate

Metallic

The bond order gives the following valuable information.

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Stability of the molecules of ions

Bond dissociation energy and bond length

Magnetic properties

All of the above

Example of linear geometry

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XeF2

F2 and HgCl2

CdI2 AND Ag Cl3

All of the above

Borax exist in the form

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Ordinary borax

Octahdral borax

Borax glass

All above

Magnesium burns in air to give.

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MgO

MgCO3

Mg3N2

Both A and C

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