Question # 1

The Lewis formula of SOCl2 the total number of bond pairs and lone pairs of electrons around sulphur are.

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2,1

2 ,2

3 ,1

3 ,0

What is defined as a local corrosion damaged characterized by surface cavities.

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Cracking

Pitting

Cavitation

Corrosion

When HCl is titrated against NaOH , the pH at the equivalence point is.

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zero

> 7

< 7

14

At the some temperature 0.1 M solution of urea is isotonic with.

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0.1 M glucose solution

0.1 M NaCl solution

0.1 M urea solution

0.1 M BaCl2 solution

A colorless gas with pleasant odour and sweet taste.

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N2O

N2O3

NO

N2O4

The branch of chemistry which deals with the analysis of chemical products is known as.

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Physical chemistry

Organic chemistry

Inorganic chemistry

Analytical chemistry

Which of the following quantity is correct for micro analysis.

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1 -10 mg or < 50 ml

10-20 mg or > 50 mL

50-100 mg or < 100 mL

None of above

The commonly used catalyst in the manufacture of H2SO4

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Fe2O3 with a little CuO

v2O5

Platinized asbestos and MgSO4

All above

Separation of isotopes of uranium is carried out by

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CaF2

SF6

HF

All above

The formula of sulphur sequioxide

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SO4

S2O7

S2O3

SO3

Which of the following technique involves the bonding of hydrophobic functional group to solid particle, surface and acts as extracting phase

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Liquid phase extraction

Solid phase extraction

Electrophoresis

Gel electrophoresis

Which of the following has the greatest metallic character.

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Na

Mg

Al

Si

The tyndall effect is not observed in

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Suspensions

Emulsions

Colloidal solutions

True solutions

Black and white photographic film contain small grains of.

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Silver bromide

Silver cholride

Silver iodide

Any of above

The colour imparted by lithium to the flame is.

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Golden yellow

Grasay green

Violet

Red

The soap and detergent are source of organic pollutants like.

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Glycerol

Polyphosphates

Sulphonated hydrocarbons

All of these

Which of the following proportion is associated with the covalent nature of the compound.

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It conducts electricity in molten stater or aqueous state

It is a non electrolyte

It has high m.p.

It is a compound of a metal and non metal.

Chlorine when attached to benzene has

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+1 and + R effect

-1 and - R effect

-1 and +R effect

None of the above

What is caustic potash

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NaOH

KOH

NaCl

KCl

Which of the following biogeochemical cycle is not component of ecosystem.

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Carbon cycle

Potassium cycle

Oxygen cycle

Nitrogen cycle

Pick out the incorrect statement about K2Cr2O7

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It is thermally stable

It dissolves in alkali to form chromate

It oxidizes acidified FeSO4 solution to Fe2(SO4)3

It is used as cleansing agent for glassware. etc. When mixed with cold con. H2SO4

The important condition for the formation of chemical bond is that.

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Their electron clouds should not diffuse

Both atoms should have high electron affinites.

Both atoms should have same electronegativities

The process should be accompanied by the lowering in potential energy.

Setting of cement is improved by

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Lime stone

Clay

Gypsum

Water

In terms of number of phases (p) components (C) and degree of freedom (F) the phase rule is expressed as.

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P + C = F + 2

F = P+ C - 2

P + F= C + 2

P - F = C = 2

In proper rotation (Cn) an object is rotated through an angle of.

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a/n radians

2n/n radians

3n/n radians

4n/n radians

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

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Domestic wastes

Industrial wastes

Agricultural wastes

All above

CFT was originally applied to.

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Ionic crystal

Liquid crystal

Solid crystal

All above

An impure sample of camphor contaminated with sand, can be purified by

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Distillation

Sublimation

Steam distillation

None of the above

Among oxides of nitrogen all are gases except.

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N2O5

N2O

NO

N2O3

Granulated sugar contains _____________% sucrose

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80

99.30

60

90

Greenish yellow gas with pungent irritating odour

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Chlorine

Fluorine

Iodine

Bromine

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