Question # 1

The reduction of an alkyne to alkene using Lindlar's catalyst results into

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Syn addition of hydrogen atoms

Anti addition of hydrogen atoms

A mixture obtained by ayn and anti addition of hydrogen which are equilibrium with each other

A mixture obtained by syn and anti addition of hydrogen which are not in equilibrium with each other.

The vitamin which is related to monossaccharides is.

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Vitamin A

Vitamin C

Vitamin D

Vitamin E

Process of separating the racemic mixture into optically active isomers is known as.

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Resolution

Racemisation

Walden inversion

Epimerization

1-Chlorobutane on reaction with alcohols potash gives.

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1- butane

1-butanol

2- butane

2- butanol

Which of the following statement is not correct n respect of Arrhenius concept.

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The concept is applicable only for aqueous systems.

Neutralization takes place in aqueous mediam only

TH+ ion cannot remain as such in water

This concept is applicable for non aqueous system only.

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

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Inductive effect

Romance effect

Hydrogen effect

All above

The bond length of C = C is

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1.20 A^o

1.34 A^o

1.54 A^o

1.68 A^o

Estimation of nitrogen in proteins is generally arrived out by the method.

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Duma's method

Van Slyke method

Kjeldahl's method

Carius method

Which of the following statement in not correct with respect to inductive effect.

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Bond length decrease with increase in inductive effect.

Inductive effect generates polar character in bonds

Variation in strength of aliphatic acids can be explained

It alone cna explain the basically of triphenylamine

Casionic polymerization is initiated by

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BF3

NaNH2

Bul

Both b and c

Among the following a good solvent for a Grignard reagent formation would be.

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t- butanol

dimethyl ether

difiuoro ethane

tetrahyudroform

Glycerol on dehyeration gives

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Allyl alcohol

Aerolein

CHOH = C= CHOH

-CHO -CHOH -CH2OH

The dyes which are produced on the fibre in suit by reactions are known as.

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Mordant dyes

Fast dyme

Ingrain dyes

Disperse dyes

Which of the following statements regarding phenols is not correct.

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Phenol ls are stronger acids than water and alcohols.

Phenol are weaker acids than carboxylic acids

Phenol are solubel in both aqueous NaOH and aqueous sodium hydrogen carbonate

Phenoxides ions are more stable than the corresponding phenol

a -amino acids when heated alone form

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Cyclic lactum

a-b-unsaturated acid

Fatty acids

Diketopiperzines

An aromatic compound has a molecules formula C7H8O. How many isomers are possible for this compound.

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3

4

5

6

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 compounds whose formation require a host compound and a guest compound are called.

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Exclusion compounds

Inclusion compounds

Crystal compounds

None of the above

Chlorination of toluene in the presence of light and heat followed by treatment with aqueous NaOH gives.

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o - creaol

p - creaol

2,4 -dihydroxy toluene

Benzoic acid

Which of the following is most basic.

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Aniline

Benzylamine

Diphenylamine

N-methylaniline

An stereospecific enzyme in one which catalyses

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Formation of one stercolsomer

Reaction of one stereoisomer only

Both of these

None of these

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