Question # 1

Which one of the following liberates CO2 from an aqueous solution of NaHCO3.

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Acetic acid

Ethyl alcohol

Phenol

Acetyl chloride

Formula of chloroform is

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CH₃Cl

CCl₄

CH₂Cl₂

CHCl₃

Which of the following derivative connot be prepared directly from acetic acid.

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Acetamide

Acetyl chloride

Acetic anhydride

Ethyl acetate

Elimination Bimolecular reactions involve

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Second order kinetics

First order kinetics

Third order kinetics

Zero order kinetics

Which compound is the most reactive

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Benzene

Ethene

Ethane

Ethyne

Each of the following is true for white and red phosphorus except one.

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Both are soluble in CCl4

Both can be oxidized by heating in air

Both consists of same kind of atoms

Both can be converted into each other

Which element is present in chlorophyll

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Ca

Mg

K

Be

Which substance usually undergo nucleophilic addition reactions.

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Benzenes

Aldehydes

Alkenes

All of these

During nitration of benzene, the active nitrating agent is

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NO₃

NO₂⁺

NO₂^-

HNO₃

All of the following tests are used to identify aldehydes except.

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Tollen's test

Fehling test

Baeyer's test

Benedict test

Lowest oxidation state of nitrogen is present in.

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NH3

NO2

NO

HNO3

Which gas is used for artificial ripening of fruits

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Ethene

Metheane

Propane

Ethyne

The state of hybridization in ethene molecule is

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dsp²

sp³

sp²

sp

Which of the following are mono-saccharides

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Fructose

Sucrose

Stach

Cellulose

An aldehyde is reduced to alkane with hydrazine is the presence of

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KOH

NaOH

CaO and NaOH

Ca(OH)2

Fluorine is in group VII A of periodic table. Its chemistry will most closely resembles that of.

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Argon

Boron

Iodine

Sulphur

Which is not a calcarious material

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Clay

Limestone

Marble

Chalk

Vinyl acetylene combines with HCl to form

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Polyacetylene

Benzene

Chloroprene

Divinyl acetylene

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