Question # 1

VBT is unable to explain the nature of some of the complexes of.

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Cobalt

Copper

Nickle

Manganese

Alpha hematite nano tubes show dimensional magnetic ordering at temperature laser than 300 K.

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0

1

2

3

Acid rain effects

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Human being

Crops

Aquatic life

All above

The intensity of magnetization produced per unit strength of the applied magnetic field is called magnetic susceptibility., which of the following statements is not related with this phenomenon.

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Confirmation of structure of given compound

Complex storeochemistry

Diamagnetic nature of molecules

Paramagnetic nature of molecules.

Ground water is threatened with pollution from which of the following source.

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Domestic wastes

Industrial wastes

Agricultural wastes

All above

They hydrolysis of methly acetate is a reaction of.

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First order

Second order

Third oirder

Fourth order

In the Mendeleev's periodic table elements are arranged in the increasing order of their .

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Numbers of neutrone.

Atomic number

Atomic mass

Atomic volume

Which of the following is raw material not present on the cement.

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Lime stone

Gypsum

Red lead

Blast furnace slag

Borax exist in the form

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Ordinary borax

Octahdral borax

Borax glass

All above

H2SO4 is used

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In the preparation of aqua regia

In the purification of gold and silver

In the dental filling

None of above

Indicate false statement about stainless steel

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The density of stainless steel is about the same as carbon or low alloy steels

Stainless steels are poor conductors of heat

Stainless steels are poor conductors of electricity

Stainless steels have tensile moduli greater than those of carbon and alloy steels.

Which of the following orbitals has maximum penetration effect.

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s

p

d

f

The rate constant of a reaction has same units as the rate of the reaction The reaction is of.

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Second order

First order

Three order

Zero order

Which of the following is capable of forming zwitter ion.

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Amino acids

Halo acids

Hydroxy acids

All of these

Which of the following pairs does not represent Lowery acid base pair.

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H2O+NH3

H2O +H2O

HCL + H2O

CH3NH2 + BF3

The ionization potential of K would be numerically equal to.

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Electron affinity of Ar

Electromagnetically of K

Electron affinity of K+

ionization energy of Ca

Sulphur can exist in

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One phase

Two phase

Three phase

Four phase

Which of the following functional groups is not involved in ion exchange chromatography.

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Weak acids

Strong acids

Strong bases

Carbohydrates

Chief source of water and soil pollution in

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Mining of ores

Thermal power plant

Agro industry

All the above

Which of the following compounds cannot be a monomer.

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CH3-CHOOH -CH2OH

NH2 -CH2-NH2

CH3-CH2-NH3

NH2-CH2-CH-CH2 -NH2

CH3

When alkyl iodidies are decomposed by light then the product obtained is.

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R - R

R - H

RCH2I

RCHI2

Among LiCl, BeCl2, BCl3, and CCl4 the covalent bond character follows the order.

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LiCl < Becl2< Bcl3 < CCl4

LiCl > BeCl2 < BCl3<CCl4

LiCl< Becl2 < BCl3 < CCl4

LiCl > Becl2 > BCl3 < CCl4

Metal are generally elements

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Electronegative

Electropositive

Neutral

None of the above

Which of the following species is not a basic radical.

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Ag+

Cl-

Ba2+

K+

The total number of crystal systems and the number of Bra via is lattices are.

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7,7

7,14

14,7

14,28

Which of the following is the most stable towards heat.

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CaCO3

BaCO3

Na2CO3

MgCO3

The property associated in thermometric tittration is

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Change in weight

Rate of change in weight

Heat evolved or absorbed

Change in temperature

The number of phases of mixtures of four gases enclosed in a container is

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1

4

4-1

zero

Increased asthmatic attacks in certain seasons are related to.

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Inhalation of seasonal pollens

Eating of seasonal vegetables

Low temperature

Wet and dry environment

The term accuracy refers to how near the observed value is to.

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Mean value

Low value

True value

Standard value

Both C and D

Coordination compound show

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Structural isomerism

Stereo isomerism

Both A and B

None of above

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