Question # 1

Ethyl alcohol on reacting with orthoboric acid form

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Ethyl borate

Boric acid

Boron acetate

Borax

Acetone reacts with HCN to form cyanohydrin it is an example of

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Electrophilic addition

Electrophilic substitution

Nucleophilic addition

Nucleophilic subtitution

Group VI B of transition elements contains.

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Zn, Cd, Hg

Fe, Ru,Os

Cr, Mo, W

Mn, Te, Re

Sodium is collected over molten sodium chloride in Down's cell, because.

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It does not react with NaCl

It is lighter in weight and floats on molten NaCl

Its reactivity is greater than NaCl

None of these

The substance which is added to remove impurities is known as

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Slag

Flux

Ore

Gangue

Which one of the following oxide is brown in colour.

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NO

NO2

N2O

N2O3

Cyclic structure of benzene was proposed by

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Dewar

Faraday

Down

Kekule

When CO₂is made to react with ethyl magnesium iodide, followed by acid hydrolysis, the product formed is

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propane

propanoic acid

propanal

propanol

Which compound is alicyclic in nature.

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Cyclobatane

Iso batane

n butane

Toluene

Group VI-B of transition elements contains

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Zn, Cd, Hg

Fe, Ru, Os

Cr, Mo, W

Mn, Te, Re

Phenol when distilled with zinc dust gives.

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Toluene

Benzaldehyde

Benzoic acid

Benzene

Di ethyl ether can be converted to alcohol by heating with.

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HI

NaOH

Water

KMnO4

Which electronic configuration corresponds to an element of group III-A of the Periodic Table

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1s²,2s²,2p⁶,3s²,3p¹

1s²,2s²,2p⁶,3s²,3p⁶,4s⁶

1s²,2s²,2p⁶

1s²,2s²,3s²,3p³

Which one of the following reactants will be required to form ethyl alcohol form ethyl bromide.

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Alcoholic KOH

Aqueous KOH

Alkaline KMnO4

Sodium metal in ether

An aldehyde compound can be reduced to alkane by

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Wurtz reaction

Grignard reaction

Wolf Kishner reaction

Kolbe's reaction

Which acid is used in the manufacture of synthetic fiber

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Formic acid

Oxalic acid

Carbonic acid

Acetic acid

Aluminum oxide is

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acidic oxide

basic oxide

amphoteric oxide

none of these

CO₂H is a functional group as

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Alkoxy

Carbonyl

Carboxyl

Hydroxyl

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