Question # 1

Which of the following is not true of ozone.

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It is a strong electilizing agent

It attacks organic compounds containing carbon carbon double bond

Its molecular is linear and has two different O-O bond lengths

It is more powerful oxidising agent at molecular oxygen

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

[Ti(OH2)6]3+ gives colour

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Green

Red

Purple

Blue

One of the best fluorinating agent is

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XeF2

XeF4

XeF6

None of above

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

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Sulpher

Oxygen

Salenium

Both A and B

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

Lead pencil contain

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Lead

Lead sulphide

a mixture of lead and silica

graphite

Copper is mainly extracted from witch of the following ore

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Sulphide ores

Carbonate ores

Oxides ores

Non sulphide ores

The most abundant metal in earth's crust is.

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Fe

Al

Ti

Ca

Which one of following is paramagnetic and has the bond order equal to 0.57

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N2

H2+

O2

F2

Amorphous boron on burning in air form

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B(OH)3

Only B2O3

Only BN

Mixture of B2O3 and BN

Form electron deficient compounds

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B

AI

Both B and AI

None of above

Which of the following elements has the highest third ionization energy.

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Sodium

Magnesium

Aluminum

Silicon

In which of the following species the bonds are non directional.

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NCl3

RbCl

BeCl2

BCl3

Which of the following statements correct regarding copper.

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It is used in electroplating

Its salts are used as insecticides

Its salts are used as coloring materials

All are correct

Acid rain effects

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Human being

Crops

Aquatic life

All above

Which of the following orbitals has maximum penetration effect.

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s

p

d

f

The hybridization of sulphur in sulphur dioxide is.

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sp

sp2

sp3

dsp2

The correct order of reactivity among I , Ii, and III IS.

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i > ii >iii

i > iii > ii

II > III > I

III > II > I

Among sodium phosphate, sodium sulphate and sodium chloride the solubility in water increases as.

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Chloride > Phosphate > Sulphate

Sulphate > Pohosphate> Chloride

Chloride > Sulphate > Phosphate

Phosphate > Chloride > Sulphate

Which of the following halogen exist in solid state.

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F2

I2

Cl2

Br2

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