Question # 1

Which of the following statement is not correct with respect to limitations of Hammett equation.

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It is only applicable to aromatic systems

Only applicable to aliphatic systems

It is not valid for m-substituent

Organic substance responsible for the smell of the Flowers etc are grouped together in chemistry as.

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Perfumes

Terphenoids

Flavonoids

Alkaloids

Which of the following case of acid or base strength is not explained by inductive effect.

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Formic acid> acetic acid

Dimethyl amine > trimethyl amine

Dimethyl amine > methyl amine

Chloroacetic acid > acetic acid

a-terpioneol is obtained on hydration of which of the following with dilute H2SO4.

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Citral

Myrcene

Linalool

Limonene

Monomers are Teflon is

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Monochloroethene

1,2- Difluoroethene

1,1,2- Trifluoroethene

Tetrafluoroethene

Enzymatic action is heat at a fixed

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Temparature

pH

Both of these

None of these

The molar mass of an organic acids is determined by

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Depression of freezing point

Elevation of boiling point

Volumetric method

Victor Myer's method

Oil of turpentine contains.

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a-pinene

p- pinene

Both A and B

None of these

The vitamin which is related to monossaccharides is.

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Vitamin A

Vitamin C

Vitamin D

Vitamin E

Hydrolysis of nucleoprotein result in the formation of.

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Proteins

Nucleic acids

Both A and B

They do not hydrolyse

Citral when heated with KHSO4 forms.

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Isoprene

p-cymene

p-menthane

Dipentene

Rectified spirit obtained by formentation contains 5% of water .So in order to remove it, rectified spirit is mixed with suitable quantity of benzene and heated Benzene helps because.

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It is dehydreating agent and so removes water

It forms the loweer layer which retains all the water so that alcohol can be distilled off

It form an azeotropic mixture having high boiling point and thus allows the alcohol to distall over

It forms low boiling azeotropic mixture which distille over leaving behind pure alcohol which can than be distilled.

Oil of turpentine contains

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a-pinene

b- pinene

Both A and B

Name of these

A terpenoid which has as alcoholic group in the molecule is.

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Citral

Camphor

Menthol

Carvone

Vet days are generally applied to the fabric in the form of.

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Mordants

Leuco base

Oxidised base

Dispersed dyes.

Which of the following techniques is involved in purification of organic compound.

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Distillation

Sublimation

Solvent extraction

All above

Ziegler -Natta catalysta is

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(C2H3)3 Al

TiCl4

(C2H5)3 Al/TiCl4

(C2H3)3 B/TiCl2

Soft drinks and baby feeding bottles are generally made up

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Polyeater

Polyurethens

Polyamide

Polyetyrene

The IUPAC name of ethylene oxide is.

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Epoxy methane

Oxcethene

Methoxymethane

All of the above

IUPAC name of HCONH2 is.

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Methanamide

Methanoylamine

Ammoethanal

Formanide

Phosphorus is detected by fusing the organic compound with -------followed by extraction with H2O

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HNO3

H2SO4

Sodium per oxide

Ozone

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