Question # 1

Which of the following is not alloy of aluminium.

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Aluminium bronze

Magnalum

Duralumin

Stellite

Example of linear geometry

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XeF2

F2 and HgCl2

CdI2 AND Ag Cl3

All of the above

When a lead a storage battery is discharged .

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SO2 is evolved

PbS is consumed

Pb is formed

H2SO4 is consumed

Which metal can produce dihydrogen gas by reaction with dil H2SO4

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Ag

Fe

Cu

Pt

Which one of the following has the highest boiling point.

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H2O

H2S

H2Se

H2Te

Which of the following species have undistributed octahedral structure.

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SF6

PF6

Si F₆^2-

XeF6

Pick out the incorrect statement for XeF4

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XeF4 disproportionate violently with water

It is used as fluorinating agent

It has octahedral structure for geometry

It oxidizes I to I₂

The acetylene molecule contain a

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Single bond

Double bond

Triple bond

Co ordinate bond

The bond formed by complete transfer of electrons from electropositive to more electronegative atom is called.

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Ionic bond

Covalent bond

Mettalic bond

Co ordinates bond

Elements in which differentiating electron enters the (n-1) the d-orbitals of the (n-1) the main shell are called elements.

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s- block

p-block

d-block

f-block

The electronegativity of the following elements increases in the order.

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C,N, Si, P

N, Si, C,P

Si, P, C, N

P, Si, N, C

How many unpaired electron are there in a strong field iron (II) octahederal compled.

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0

1

2

4

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.

Un-like s -block elements d-block elements form which compounds as well

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ionic compounds

Co valent compound

Co ordinate compounds

None of above

The state of hybridization of Xe in Xe F6 are

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sp2

sp3

sp3 d

dsp3

Sodium Tetra borate is used

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As alkaline buffer in dying & bleaching process

In manufacture of opticl glass

in enameling and making glaze

All 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

The pH of the 0.0032 M H2SO4 is.

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3.2

4.0

2.198

1.0

Which of the following property is not related to aluminum.

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it is silvery white metal with brilliant lusture

It is a very light metal with specific gravity as 2.7

It is good conductor of heat

It is the least reactive element of III Group.

Which of the following statement is incorrect.

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An alloy is a mixture of two or more metals

An alloy is a mixture of two or more metal and non metal elements that have metallic properties

An alloy has a fixed composition

An amalgam is an alloy containing Hg

Which of the following can be used as drying agent of ammonia.

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CaO

Anhydrous CaCl2

P2O5

Conc. H2SO4

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