Question # 1

Ionic bond are also forces called as.

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Polar bond

Electrovalent bond

None polar bond

Both A and B

Covalent compound are soluble in

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Polar solvents

Non polar solvent

Concentrated acids

All solvent

In vinyl cyanide, the number of a bonds in

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2

3

1

4

Which of the following exists as polymeric chains in solid state.

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Sr Cl2

Ba Cl2

MgCl2

BeCl2

Which can be purified by sublimation

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F2

Cl2

Be2

I2

The coordination number of closely packed hexagonal is.

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4

6

8

12

An element with atomic number 20 is placed in which period of the periodic table.

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1

2

3

4

Which of the following represents the correct order of ionic radii

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La+ < Na+ < K+ < Rb+

Li+ > Na + > K+ >Rb+

Li = Na + = K+ = Rb+

Rb +> Na+> K+ > Li+

The electrolysis of molten metal hydride will produce dihydrogen gas.

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At cathode

At anode

At both the electrodes

At none of the electrodes

The noble gases which does not I do not form any clathrates is.

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He

Ne

Argpm

Both He and Ne

The maximum oxidation shown by managanese is.

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+2

+7

+4

+5

Fluorine finds considerble use of DDFT which is used as.

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herbicide

Fungacide

Insecticide

Nomatocides

Transition elements, in general exhibit the following properties, except one Name that property.

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Variable oxidation state

Natural radioactivity

Tendency to form complexes

Formation of alloys

The wire of flash bulb is made up of.

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Cu

Ag

Mg

Ba

The principal ores of copper are

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Copper sulphides

Copper oxides

Both sulphides and oxides

Copper carbonate

Metal are

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Hard

Ductile

Malleable

All

Which of the following is not known.

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KrF6

XeF6

XeO3

KrF2

Which of the following is not an ore of nickel.

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Pentalandite

Siderite

Garnierite

Nicollite

The geometry of Xe F2 is

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Triangular planar

Square planar

Linear

Trigonal bipyramidal

AlCl3 fumes in air because of.

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Hydrolysis

Dehydration

Hydration

Oxidation

Which of the following element has six electrons in the valence shell but cannot exhibit a maximum co valency of six.

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Sulphur

Oxygen

Selenium

Both A and B

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