Question # 1

Boron and aluminum halides are electron deficient compounds in this respect. they act as.

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Lewis acid

Lewis base

Oxidizing agent

Reducing agent

Has maximum property of catenation.

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C

Si

Sn

Pb

d2 sp3 is oriented in a manner

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Trigonal

Tetrahedral

Octahedral

Trigonal bipyramidal

Which metal can produce dihydrogen gas by reaction with dil H2SO4

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Ag

Fe

Cu

Pt

Which one of the following pairs are chemically dissimilar.

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Na and K

Ba and Sr

Zr and HF

Ca and Zn

Which of the following bonds will be non polar.

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N - H

O - H

C - H

C l - Cl

Pick out the incorrect statement for Xe F6

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XeF6 is hydrolyzed practically to form XeOF4

It reacts with SiO2 to form Xe F4

On complete hydrolysis, it forms XeO3

It acts as F acceptor when treated with alkali metal fluoride, but cannot act as F donor to form complexes.

Group IV A consist of elements

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3

4

5

6

Beryllium shows diagonal relationship with.

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Mg

Al

Na

B

Which of the following compounds liberates CO2 on heating.

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Li2CO3

Na2CO3

K2CO3

All liberate CO2 on heating.

The bond along Sp2 hybridization is.

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180^o

120^o

109.5^o

160^o

The suffix "ate" at the end of the name of the compiled signifies that it is.

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Cation

Anion

Neutral

None of above

The process of heating to redness and then slow cooling in known as

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Tempering

Annealing

Quenching

Hardening

Used in filling luminous tubes.

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Xenon

Krypton

Radon

Helium

Fluorine does not show variable oxidation state because of.

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its high electronegativity

Its small sixe

low dissociation energy of F-F bond

Non availability of d-orbitals

A general trend in the properties of elements of carbon family shows that with increase in atomic number.

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The tendency towards concatenation increases

The tendency to show +2 oxidation state increase

Metallic character decreases

The tendency to form complexes with convalency higher than four decreases.

On industrial scale chlorine is prepared by

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Dennis method

Deacon's process

Plantner's process

Aludels process

For covalent bond to form between two atoms A and B

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Transference of electrons must take place from A to B

A pair of electrons of A is shared by both A and B

A and B contribute equal no. of electrons for mutual sharing by A and B

One of the atom A or B must already have octet of electrons.

Which of the following has the highest melting point.

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NaCl

KCl

MgO

BaO

Which of the following halogen exist in solid state.

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F2

I2

Cl2

Br2

Which one of the following is not formed when an electric discharge passes through helium.

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HeH+

HeH2+

He2+

He2-

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