Question # 1

The correct order of increasing polar character is.

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H2O < NHE < H2S < HF

H2S < NH3 < H2O < HF

NHE < H2O < HF < H2O

HF < H2O < NH3 < H2S

Which is the purest form of iron.

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Pig iron

Cast iron

Wrought iron

Steel

Which of the following pentahalides is not formed.

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NF5

PF5

AsF5

BiF5

Sodium silicate is ued

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In fire proofing of wood and textiles

As a preservative of eggs

As a furniture polish

All above

Zeigler Natta catalyst is.

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Pt/PtO

TiCl4/Al(C2H5)3

Pt/Rh

Pt

Lother Meyer plotted a graph showing variation of.

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Atomic volume with increase in atomic number

Atomic volume with increase in atomic weight

Atomic redii with increase in atomic weight.

Atomic weight which increase in atomic number

Finely divided iron combines with CO to give.

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Fe(CO)5

Fe2(CO)9

Fe(CO)12

Fe(CO)6

Al Cl3 is used in

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Manufacturing of petrol

In borax bead test

Prezervation of food

All above

Variable oxidation states is shown by

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Normal eleemnts

Metallic elements

Non metallic elements

Transition elements

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

Of the following an amphoteric hydroxide is.

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Ca(OH)2

NaOH

Be (OH)2

Li OH

Which one of following is non polar

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CH2Cl2

CCl4

CHCl3

CH3Cl

Which of the following parameter is not involved in calculations based on Born Haber Cycle.

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Ionization enthalpy

Electron gain enthalpy

Electronegativity

Bond dissociation energy

Metal are generally elements

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Electronegative

Electropositive

Neutral

None of the above

The compound insoluble in acetic acid is.

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Calcium oxide

Calcium carbonate

Calcium oxalate

Calcium hydroxide

In the electrolysis of alumina, cryolite is added to.

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Lower the melting point of alumina

Increase the electric la conductivity

Minize anodize affect

Remove impurites from alumina

The electronegativity of phosphorus is.

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3.0

2.1

2.0

1.9

Aluminium hydroxide is.

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An acid

An amphoteric hydroxide

A base

An explosive hydroexide

Used in filling luminous tubes.

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Xenon

Krypton

Radon

Helium

Nitric acid has the property

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Nitrating

Reducing

Redoxing

None of above

Al2Cl6 is an example of

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Ionic bond

Covalent bond

Co ordinate bond

Metallic bond

HCIO evolves Cl2 and O2 when dissolve

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Ca

Ni

Cu

Any of above

Stainless steel consists of which elements.

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Fe only

Cr only

Fe and Ni

Fe ,Ni and Cr

Which group contains elements that exist as monoatomic molecules.

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1

2

14

18

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.

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