Question # 1

Select the major product obtained from the addition of HBr to I -Methyl cyclohexene

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1-bromo -2- methyl cyclohexane

6- bromo-i- methyl cyclohex -i- ene

3- bromo -1- methyl cyclohex - 1- ene

I-bromo -I- methyl cyclohexane

Which of the following trihalides of nitrogen behaves as the weakest base.

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NF3

NCl3

NBr3

NI3

Solid sodium chloride does not conduct electricity be cause.

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In solid NaCl, no ions are present

Solid NaCl is covalent in nature

In solid NaCl, there is no mobility of ions

In solid NaCl, there are no electrons.

Which of the following elements has the highest ionization energy.

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Na

Si

Ar

Cl

Ozone layer of stratosphere requires protection from indiscriminate use of.

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Fungicides, insecticides, bactericides and medicines

Aerosols and high flying jets

Atomic explosions and industrial wastes

Weather ballons

Which of the following statements is false about enantiomers.

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Rotate plane of polarized light

Are superimposable mirror images

Nbonsuperimposable mirror images

All of the above

What is the oxidation number of the central meal atom in the coordination compound.[Pt(NH#)#Cl]Cl

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-1

0

+2

+3

Which type of elements form ionic hydrides.

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Transitionelements

Metalloids

Elements with high electronegativity

Elements with high electropositivity.

Allotropic form of tin

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White tin

Grey tin

Rhomic tin

All above

Amorphous boron on burning in air form

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B(OH)3

Only B2O3

Only BN

Mixture of B2O3 and BN

Ingold's isoprene rule states that in tepenoids isoprene units are joined.

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Head to tail

Head to Head

Tail to Tail

In a random order

The reciprocal of the coefficient of viscosity in called.

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Density

Specific gravity

Fluidity

Conductance

Hydrogen bond is not electrostatic in nature is stated by

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Electrostatic approach

Valence bond approach

Molecular orbital approach

None of the abvoe

Nitric acid is used in manufacturing of.

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Explosive

H2SO4

Fertilizer

All above

Which of the following is a planar molecule.

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Acetone

Formic acid

Acetic acid

All above

The metallic character of group 14 elements

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Decreases from top to bottom

Increases from top to bottom

Does not change gradully

Has no significance

If Steel is heated to a temperature well below red heat and to then cooled slowly the process is called.

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Annealing

Quenching

Tempering

Nitriding

Fluorine is.

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Powerful oxidizing agent

Most reactive element

Used as refrigerants

All of above

Pick out the incorrect statement for CIF3

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It has trigonal planar geometry

It is used to make gaseous UF6 which is useful in making enriched U-235 fuel

It is used as powerful fluorinating agent for inorganic compounds

CIF2 has been used as fuel in short range rockets reating with hydrazine.

Which of the following group will have hyper conjugation effect when attached to benzene.

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------ CH3

----C6H5

------C(CH3)3

---------CH(CH3)2

Which of the following is not a characteristics of terpenoids.

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They are pleasant smelling liquids

They are steam volatile

They are nitrogenous bases

they are insoluble in water

The equivalent conductance of a 1 N solution of an electrolyte is nearly

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The same as its specific conductance

10³ times more than its specific conductance

10-3 times its specific conductance

100 times its specific conductance.

Air pollution is not caused by

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Pollen grains

Hydroelectric power

Industries

automobiles

HCIO evolves Cl2 and O2 when dissolve

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Ca

Ni

Cu

Any of above

Group IV A consist of elements

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3

4

5

6

The common temperature detecting device in DTA are.

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Thermocouples

Thermopiles

Thermistore

All

In 1952 who popularized the use of CFT for inorganic chemist

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Bethe

Orge

Van Vleck

Werner

Not a major contributor of engineering ceramics

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SiC

SiO2

Si3N4

BH3

When 0.01 moles of NaOH are added to a buffer solution, its pH changes from 4.745 to 4.832 WHAT IS ITS.

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0.115

0.900

0.015

0.215

In the purification of bauxite , the ore is fused with sodium carbonate in the process

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Baeyer's process

Hall's process

Serpeck's process

Any of above

The splitting of H2O can be carried out through

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Photolysis

Electrolysis

Dialysis

Hydrogenation

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