Question # 1

The alkaline hydrolysis of fat is know as

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Condensation

Esterification

Saponification

Emulsification

Glass obtained by placing a layer of butyral plastic with a suitable adhesive between two layers of glass and cementing them by heat and pressure is called.

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Glass wool

Safety glass

Optical glass

Jena glass

Which of the following is not a chemical pollutant.

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Solid waste

Noiso

Insecticides

Liquid waste

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

Lithium shows diagonal relationship with

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Beryllium

Sodium

Magnesium

Calcium

The steroid which plays an important role in carbohydrate metabolism is.

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Oestrone

Progestrrone.

Androsterone

Cortisone

Select the correct IUPAC name for [FeF4(OH)2]-

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Diaquatrafluoriron (III) ion

Diaquateratrafluoriferrate (III) ion

Diaquatertrafluoroiron (I)

None of these

The most widely used method of extracting metal ions is the formation of a chelate molecule with an organic chelating agent The chelating agents are.

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Strong acids

Strong bases

Weak bases

Weak acids

Which of the following is the strongest oxidant.

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F2

Cl2

br2

I2

Which of the following compounds is electrovalent in nature.

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SO2

ICI

KBr

CHI3

Enfleurage process is used to extract the essential oils from

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Back of plant

Seeds of plant

Leaves of plant

Flowers of plant

Which of the following statement is incorrect about rock salt type

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It has for arrangement of Na+

Na+ and Cl- ions have coordination number of 6:6

A unit cell of NaCl metals have rock salt type structure.

None of them

Which of the following is not a characteristic of phthalocyanine dyes.

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They are metal complex

the are insoluble in water

They have porphin nucleus

They are used in photographic plates

The value of comprehensibility factor (z) = pV/nRTfor an ideal gas is equal to.

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R

1

2

3

Conjugation of chromophore

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Deepens the colour

Lightene the colour

Shifts absorption to shorter wavelength

All of these

Which of the following compounds would be most ionic to charcter.

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PbCl4

PbCl2

SnCl4

SnCl2

Which of the following methods does not give the weight average molecular weight.

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Sedimentation equilibrium

Sedimentation velocity

Light scattering

Osmotic method

Which of the following statement is not true with respect to photo chemical reactions.

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These take place in the presence of light

Free energy of these reactions may be positive or negative

Light intensity affect these reactions

Temperature has significant affect n rate of these reactions

Fertilizers are classified into

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Two major categories

Three major categories

Four major categories

None of above

Which of the following concentration term is used in respect of standard solutions.

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Normality

Formality

Molarity

All of above

Pig iron is also called.

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Cast iron

Steel

Wrought iron

Stainless steel

Helium is used for

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The preservation of food

Filling electrical transformer

Pressuring agent in rockets

All of above

Which of the following enthalpies is always negative.

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Enthalpy of melting

Enthalpy of combustion

Enthalpy of solution

Enthalpy of formation

Metal are

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Hard

Ductile

Malleable

All

When a solute is dissolved in two immiscible solvents it will distributes itself between two phases and the ratio of the concentration of the solute in two phases will be constant, This is known as.

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Starke law

Distribution law

Equilibrium law

Snell's law

Which of the following is strongest reducing agent.

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Be

Mg

Ca

Sr

Eosin dye belongs to the group of dyes known as.

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Nitroso syes

Triphenylmethane dyes

Diphenylmethane dyes

Phthalein dyes

The following ceramic product is mostly used as pigment in paints.

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TiO2

SiO2

uo2

ZrO2

In smelting process the ore is mixed with

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Silica

Coke

Limestone

All

In which of the following species the bonds are non directional.

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NCl3

RbCl

BeCl2

BCl3

Granulated sugar containing._____________

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Glucose

Fructose

Maltose

Sucrose

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