Question # 1

Polyethylene Glycols are used in the preparation of which tye of detergetns.

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Cationic detergents

Anionic detergents

Non ionic detergent soaps

None of above

Which of the following generally increases on going from top to bottom in a group.

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Metallic charcter

Electronegativity

Oxidising behaviour

Raducing behaviour

Chlorine gas acts as a bleaching agent only in presence of.

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dry air

Moisture

Sunlight

Pure oxygen

When of the following steps is involved in structure determination of an organic compound.

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Purification of compund.

Qualitative and quantitative analysis of elements present

Determination of molar mass

All above steps

The common temperature detecting device in DTA are.

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Thermocouples

Thermopiles

Thermistore

All

Which of the following compounds has highest dipole moment.

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Dichloromethane

Chloroform

Chloromathane

All above

A molecule the cannot be susperimposed on its mirror image is said to exhibit which of the following.

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Geometrical isomerism

Optical isomerism

Linkage isomerism

Reactive isomerism

Which of the following agrochemical acts as pollutant.

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Fertilizers

Weedicides

Herbicides

All above

How many oxygen atoms lined up in a now would fit in a one nanometer speace.

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None an oxygen atoms is bigger than 1 nm

One

Seven

None of the above

A system is said to be in the colloidal state if the particle size of the dispersed phase ranges from

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_o

I to 10 A

10 to 10000 A

10 to 100 A

1000 to 10000 A

Which of the following bonds will be non polar.

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N - H

O - H

C - H

C l - Cl

The most electronegative element of the third period is.

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F

P

Br

Cl

Which of the following substance is not present in acid rain.

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Sulphuric acid

Nitric acid

Acetic acid

Sulphurous acid

The denationalization involving C - H sigma bond electrons is known as .

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Conjugation

Hyperconjugation

Mesomerism

Resonance

The percentage of nitrogen in ammonia is _______________%

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32

82

25

55

Treatment of phenol with cold dilute nitric acid gives.

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Only o-nitro phenol

Only p-nitro phenol

2,4,6 -Teinitro phenol

Mixture of o-and p-nitro phenol

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

Potassium crystallizes in a body centered lattice. Hence, the coordination number of potassium in potassium metal is.

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4

6

8

12

Which of the following is not a biodegradable polymer.

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Protein

PVC

Cellulose

Nucleic acid

The types of coordinate compounds.

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Labila

Inert

Both A and B

None of above

The correct order of increasing polar character is.

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H2O < NHE < H2S < HF

H2S < NH3 < H2O < HF

NHE < H2O < HF < H2O

HF < H2O < NH3 < H2S

Which of the following salt is colourless.

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Zn salt

Co salt

Ni salt

Mn salt

In which of the following group, each member given a positive iodoform test.

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Methanol, ethanol, propanone

Ethanol, isopropyl alcohol, methanol

Ethanol, ethanal, isopropyl alcohol

Propanal 2-propanol, propanone

The pH of 0.01 N NaOH is.

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12

13

14

11

Which of the following is class of nanorods

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metals

alloys

Metal oxide and Metal sulphite

All of the above

The most important problem regarding nano chemistry

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Elucidation of relationship between also and chemical reactivity of particle

Determination of size of particle

Determination of reactivity of particle

Determination of physical properties of nano particles.

The internal resistance to flow possessed by a liquid is called its.

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Fluidity

Viscosity

Surface tension

Turbidity

Wlhich of the following can act as a protective colloid

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Gelatin

Silica gel

Oil in water emulsion

All three

Steel that are used for axles, gears, and similar parts requiring medium to high and strength are known as.

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Medium carbon steel

Low carbon steel

Very high carbon

High carbon steel

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.

Naphthalene balls are obtained from

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Carbon

Coke

Coal Tar

All of above

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