Question # 1

Both the elements are typical non metals.

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B & Ai

B & Si

Al & Si

Any of above

CoCl3 ,6NH3 has six NH3 molecules that satisfy the valency of the Cu3+ metal ion

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Primary

Secondary

Both A and B

None of above

Ground state electronic configuration of valence shell in N2 m lecule is written as (a2s)2, (o*2s)2 , (pi sp)4, (o2p)2, Hence, the bond order of N2 molecule is.

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1

2

3

0

In bi sulphate ion, the formal charge on sulphru atom is.

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+1

+2

+4

+6

Which of the following elements of group 15 is a typical metal.

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P

As

Bi

Sb

Nitrogen (N2)) is relatively unreactive because.

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Its electronegativity is high

Its dissociation energy is large

Its atomic radius is small

It is the first element of group 15

Which of the group 13 element does not form M (III) idodie.

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Al

Ga

Ti

In

HCIO2 gives the structure of a.

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Linear

Angular

trigonal pyramidal

Tetra hddral

Metal are

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Hard

Ductile

Malleable

All

Which of the following statements is not true for both B and Al

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They burn in oxygen to give oxides at high temperature

Their halides are Lewis acids

They combine with nitrogen to form nitrides

They react with HCl to form chlroides.

The name hydrogen was proposed by.

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Lavoisier

Rutherford

Henry Cavandish

Scheele

Which one of the following is not correct.

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Ar is used in electric bulbs

Kr is obtained during radioactive decay

Boiling point of H2 is lowest among all noble gases.

Xe forms Xe OF4

Which among the following is insoluble in water.

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LiOH

KOH

NaOH

RbOH

The secondary valency of Conc. CoCl3. 6NH3.

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2

4

6

8

SO3 exists in form

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a -so3

b-SO3

gama SO3

All above

Which of the following process is used for the conversion of matte is to nickel.

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Orford process

Mond's process

Electrolytio process

All

Which show maximum number of oxidation states in 3d series.

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Mn

Ni

Co

Zn

Which of the following is not a property of Ni.

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it is a soft silvery white metal

It is malleable and ductile

It is highly magnetic

It has high electrical and thermal conductivities

SO2 acts as

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Lewis base

Lewis acid

Botha A and B

None of above

The aluminium salt commonly used to stop bleeding is

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Aluminium sulphate

Potash Alum

Aluminium chloride

Aluminium fluroide

The contact process is mainly used when acid is required for the manufactures of.

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Explosives

Fine chemicals

Lead accumulators

All above

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