Question # 1

------------- does not belong to Alkaline-Earth metals

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Be

Ra

Ba

Rn

Predict the product or reaction.

Acetaldehyde +NaOH

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An aldol

Acetic acid

Ethanol

Paraldehyde

Flavour of ethyl butyrate is

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Orange

Pine apple

Banana

Apricot

The process used to improve quality of gasoline

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Thermal Cracking

Reforming

Combination

Steam Cracking

Zwitter ion is

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Dipolar ion

Amino acid with two amino groups

Amino acid with two carboxylic acid group

A synthetic amino acid

Which is not a calcarious material

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Clay

Limestone

Marble

Chalk

Catalyst used to reduce carboxylic acid to alcohol is

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H₂/ Ni

H₂/ pt

NaBH₄

LiAIH₄

Among the following the compound that can be most readily suphonted is.

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Toluene

Benzene

Nitrobenzene

Chlorobenzene

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

Mark the correct statement.

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Na+ is smaller than Na atom

Na+ is large than Na atom

Cl- is smaller than Cl atom

cl- and Cl are equal in size

Aluminum oxide is

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acidic oxide

basic oxide

amphoteric oxide

none of these

The gas used in bactericidal lamps is

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Be

Ar

Kr

Xe

Dolomite is a carbonate of

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Be

Mg

Na

Ba

Basicity of ortho phosphoric acid is.

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1

2

3

4

Which catalyst is used in contact process

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Fe₂O₃

V₂O₅

SO₃

Ag₂O

An sp3- hybrid orbital contains.

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25% s- characters

50% s- characters

75% s- characters

100% s - characters

The percentage of carbon is different types of iron products is in the order of.

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Cast iron > wrought iron > Steel

Wrought iron >Steel >Cast iron

Cast iron > Steel > Wrought iron

Which one of the following elements has the same oxidation number in all its known compounds.

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Beryllium

Nitrogen

Sulphur

Chorine

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