Question # 1

Which of the following is strong adheaive.

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Epoxy resin

Melamine -formadehyde resin

Alkyd resins

Bakelite

Which of the following factors effect the strengths of acids and bases.

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Inductive effect

Romance effect

Hydrogen effect

All above

Oxytocin, a pituitary hormone to

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Amino acid

Polypeptide

Protein

Conjugated protein

A terpenoid which as an alcoholic group in the molecule is

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Citral

Camphor

Menthol

Carvone

Which of the following is the major process when neopentyl bromide is dehydrogenate with alcoholic potash.

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2- methyl -1- butene

2- methyl- 1- butene

2,3 -dimethyl butene

2- butene

Which of the following polymers is chlorinated.

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Orlon

Neoprene

Dacron

None of these

When the colourless liquid chlorobenzene is shaken with bromine water, the chlorobenzen becomes a yellow-orange colour. Which of the following is the best interpretation of this.

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An addition compound of chlorobenzene and bromine has been formed.

The chlorine atom has been replaced by a bromine atom

The bromine is mor esoluble in chlorobenzene than in water

A hydrogen atom has been replaced by a bromine atom

Which statement is true.

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Resonance hybride are inherently unstable.

Resonance hybride are more static than any individual resonance form

Resonance hybride are average of all resoance forms resembling the more stabel forms

None of the above

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

Which of the following is not an androgen i.e. male sex hormones.

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Androsterone

Testosterone

Oestrone

All of these are make hormone

Which of the following statements in not correct with respect to the important characteristics of aromatic compounds.

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They are usually cyclic compounds

They are resistant to usual addition reactions

They usually undergo substitution reactions

They are less stable

Different arrangement of groups in space which can be converted into one another by rotation around a single bond are caled.

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Conformations

Metameres

Enatiomers

All of the above

The half life for a first order reactions 32 s, What was the original concertation if after 2.0 minutes, the reactant concentration is 0.062 M.

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0.84 M

0.069 M

0.091 M

0.075 M

Each of the following when present at para position decreases the acidic strength of phenol except.

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-NH2

-Cl

CH3O-

CH3-

Complete hydrolysis of nucleotide result in the formation of.

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Heterocyclic bases

A pentose

A phosphate ion

All of these

Ziegler -Natta catalysta is

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(C2H3)3 Al

TiCl4

(C2H5)3 Al/TiCl4

(C2H3)3 B/TiCl2

High density polyethylene has which type of structure.

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Linear

Branch chain

Cross linked

Any one of these

a- pinene hydrochloride on warming rdarranges to form bornyl chloride.The rearrangement is known as.

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Pinacol pinacolone

Hofinann

Wager Mecrwein

Wolff

The IUPAC name of HCOOCH3 is.

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Methoxy methanol

Ethanoic acid

Methyl methanoate

Methoxy methane

Which of the following reaction cannot be used for the synthesis of a amino acids.

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Gabriel phthalimide

Streckers synthesis

Sorensen synthesis

Schmidt synthesis

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

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Perfumes

Terpenoids

Flavonoids

Alkaloids

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