Question # 1

The vitamin which is related to monossaccharides is.

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Vitamin A

Vitamin C

Vitamin D

Vitamin E

Sugar and common salt in a mixture can be separated through then process of.

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Sublimation

Distillation

Ion exchange

Crystallization from solution in ethanol

The common host compound for the formation of inclusion compound is.

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Urea

Thiourea

Cholic acid

All above

High density polyethylene has which type of structure.

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Linear

Branch chain

Cross linked

Any one of these

Inorganic acids (HCl, HBr, HNO3 etc) have K value.

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< 1

>1

>10

<10

Which of the following is most basic.

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Aniline

Benzylamine

Diphenylamine

N-methylaniline

The binding site on ribosome t-RNA and m-RNA is provided by

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Polysome

Ribosomal RNA

Codone

DNA

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

Which statement is false.

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If a reaction is thermodynamically spontaneous it may occur rapidly

If a reaction is thermodynamically spontaneous it may occur slowly.

Activation energy is a kinetic quantity rather than a thermodynamic quantity.

If a reaction is thermodynamics spontaneous, it must have a low activation energy.

Enantiomers have which of the following characteristics.

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Rotate ordinary light

Have the same melting point

Are superimposable mirror images

React with optically active molecule at the same rate

The condensation between formaldehyde and acetaldehyde in the presence of conc. NaOH and heat gives.

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Acrolein

Mixture of CH3OH and CH3COO Na.

Mixture of CH3CH2OH and HCOO - Na+

None of these

Bromination of n-butane produces.

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I-bromobutane as the major product

2- bromobutane as the major product

Both I - bromo and 2- bromobutane with equal percentage

Both i-bromo and 2-bromo products whose percentage depends upon temperature.

Which of the following property has a higher value for trans isomer as compared to cis isomer.

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Density

Dipole moment

Melting point

Boiling point

Hydrocarbon X (C6H12) on oxidation with hot alkaline (KMnO4) gives a mixture of prop ionic acid and dimethyl ketone. The structure of compound X is

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CH3CH = CHCH2CH2CH3

(CH3)2 C = CH CH2 CH3

CH3CH2CH = CHCH2CH3

(CH3)2 C = C (CH3)2

The reagent which can react with 1- chlorobutane to give substitution product is

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Al Cl3

KOH -CH3OH

NaCN

Mg/ether

A catalyst

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Actually participates in the reaction

Changes the equilibrium concentration of the products

Does not affect a reaction energy path

Always decreases the rate for a reaction

Chlorination of benzene with excess chlorine in the presence of FeCl3 as Lewis acid gives.

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Chlorobenzene as a major product

o-dichlorobenzene as major product

p-dichloro benzene as an only product

A mixture of 0- and p- dichloro benzene

Which of the following organic molecule is not aromatic.

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Benzene

Naphthalene

Anthracene

Cyclo-octatetraene

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

Indigotin is a dye obtained from indigo plant which belongs to the group of.

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Substantive dyes

Mordant dyes

Vat dyes

Disperse dyes

Ingold's isoprence rule states that in terpenoids isopren units are joined.

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Head to tail

Head to head

Tail to tail

In a random order

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