Question # 1

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

Strongest inter molecular hydrogen bond is formed in

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H2O

NH3

HF

H2S

Which compound among the following does not contain an ionic bond.

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NaOH

HCl

KaS

LiH

The elements with highest electron affinity belongs to.

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Period 2 , group 17

Period 3, group 17

Period 2, group 18

Period, 2 , group 1

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

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1

2

3

4

Types of carides

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Ionic carides

Covalent carbides

Interstitial carbides

All above

An element with high electronegativity has

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High IE and high EA

High IE and low EA

Low IE and High EA

Low IE and low EA

Molecule of oxygen is

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Diamagnetic

Paramagnetic

Both A and B

None of above

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

Borax exist in the form

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Ordinary borax

Octahdral borax

Borax glass

All above

Which of the following elements has the highest ionization energy.

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Na

Si

Ar

Cl

LiAIH4 is most useful reducing agent It reduce to alcohol

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Aldehydes

Ketone

Carboxylic acid

Any of above

The common ligands can be arranged in order of their increasing splitting power to cause d-orbitals splitting. This series is called as.

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Electro-chemical

Spectro -chemical

Physico-chemical

Spectro -electrical

Since the acid gives both acidic and normal salts so the acid is.

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di acid

di basic

double salt

Any of above

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

The correct order of electron affinities of SI, P, and Cl is.

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P > Si > Cl

Cl > P > Si

Cl > Si, > P

Si > P . Cl

What is the following is incorrect.

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Water is more polar than H2S

H2O2 is a planar molecule

Heavy water is produced by the exhauative electrolysis of water made acidic

H2O2 act both as oxidising as well as reducing agent in acidic medium

Which one of the following ions is colourless.

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Cu+

Co2+

Ni2+

Fe3+

The solution of NaOH pH -10.46 contain [OH-]

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2.0 X. 10^-4

4.6 X 10^-4

4.6 X 10^-2

4.6 X 10^-3

The aluminium alloy used to make parts of aircrafts is.

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Magnalium

Aluminium bronze

Duralumin

All of the these

Which among the following hydride is ionic in nature.

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Ammonia

Protium oxide

Calcium hydride

Sulphane

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