Question # 1

Which of the following statements do not represent Lewis idea of acids and base?

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Compounds which have completely filled orbitals

Compounds which have incompletely filled orbitals

Compounds in which the central atom can expand its octel

All simple metal ions like Ag+, Al3+ etc.

The number of mole of the solute dissolved per dm3 of the solution is called.

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Molality

Formality

Normality

Molarity

Which of the following alkyl halide undergoes nucleophilic substitution reaction via the formation of a carboncation.

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1-chloro -2 methyl propane

2- chlro-2-methyl propane

2- chloro butane

1-Chloro, 3,3- dimethyl pentane

Which of the following hydroxides has the maximum solubility in water.

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Mg (OH)2

Ca (OH)2

Sr (OH)2

Ba (OH)2

Carbon tetra chloried has no net dipole moment because of.

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Its planar strcture.

Its regular tetrahedral structures.

Similar sizes of carbon and chlorine atoms

Similar electron affinities of carbon and chlorine.

The _________ sphere is enclosed in brackets in formulas for complex species, and it includes the central metal ion plus the coordinated group

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Ligand

Donor

Coordination

Oxiation

The tyndall effect is not observed in

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Suspensions

Emulsions

Colloidal solutions

True solutions

The hardest material found in nature is

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Steel

Topaz

Diamond

Quartz

What of the following is not a Lewis base.

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CN-

AlCl3

NH3

ROH

What is the raw material of sugar industry.

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Sugar cane

Potato

Carrot

Sugar heat

Both A and C

Which of the following does not apply to nanotechnology.

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It is a general purpose technology

It can be called Green technology

Newtonian mechanics can describe it.

It involves rearrangement of atoms

Which of the following is not a component of hollow cathode lamp.

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Anode

Cathode

Filter gas

Atomic vapour

Which one of following is paramagnetic and has the bond order equal to 0.57

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N2

H2+

O2

F2

Which of the following configuration of an ionic species represents psedue noble gas configuration.

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ns2

ns2 np6

ns2 np6 nd 10

ns2 np3

Which one of the following has a linear structure.

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H2O

CO2

NO2

SO2

Which of the following is the most stable towards heat.

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CaCO3

BaCO3

Na2CO3

MgCO3

Fertilizers are classified into

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Two major categories

Three major categories

Four major categories

None of above

HCIO evolves Cl2 and O2 when dissolve

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Ca

Ni

Cu

Any of above

Dyes which can be applied to cellulosic fibre from water solution are called.

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Ingrain dyes

Substantive dyes

Mordant dyes

Vat dyes

What element is added to copper to increase its strength and fatigue propertioes.

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Silicon

Aluminium

Beryllium

Copper

Which of the following agrochemical acts as pollutant.

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Fertilizers

Weedicides

Herbicides

All above

VBT does not edplain

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Absorption spectra

Color of transition metal ion

Heat of formation

All above

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

Sugar and common salt in a mixture can be separated through then process of.

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Sublimation

Distillation

Ion exchange

Crystallization from solution in ethanol

Which process of adsorption of hydrogen on palladium is known as.

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Syneresis

Occlusion

Diffusion

Erosion

What refers to the deterioration of material by oscillatory relative motion of small amplitude between two solid surfaces in a corrosive environment?

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Stray current corrosion

Microbiologicla corrosion

Fretting corrosion

None of these

In which property listed below hydrogen does not resemble alkali metals.

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Tendency to form cation

Nature of oxide

Combination with halogens

Reducing character.

Dull red flame is observed with

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Calcium salt

Barium salt

Strontium salt

Sodium salt

The percentage of nitrogen in ammonium sulphate is__________%

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27

21

23

19

What does 'F' stand for in AFM.

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Fine

Front

Force

Flux

Which of the following salt is colourless.

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Zn salt

Co salt

Ni salt

Mn salt

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