Question # 1

The quality of petroleum is determined by

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Decane number

Octane number

Nexane number

None of these

Homologues differ from each other by an integral number of

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CH₂groups

CH₃groups

CH groups

CH₄groups

Quality of fuel is judged from its octane number. The best fuels are

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Straight chain hydrocarbons

Branched chain hydrocarbons

Cyclic compounds

Compounds containing benzene ring

Gasoline is a mixture of hydrocarbons containing carbon atoms

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5 to 10

5 to 8

5 to 12

5 to 11

Carboxylic acid, ester, amide and amino groups are shown. Which is the correct description of these functional groups

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The open chain organic compounds are called

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Linear compounds

Aromatic

Aliphatic

Both A and B

The destructive distillation of coal gives three products. What is not the product of destructive distillation of coal

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Coal gas

Carbon dioxide

Coal tar

Coke

Which is not the poplar reaction

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The formula of esters is

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The isomers due to the unequal distribution of carbon atoms on either side of the functional group belonging to the same homologous series are called

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Functional isomers

Position isomers

Chain isomers

Metamers

Peat before conversion to bituminous coal is converted to

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Lignite

Anthracite

Asphalt

None

The use of tetra ethyl lead in petrol as an efficient antiknock agent is being discouraged. Which reason is correct

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It is costly

It damages the engine

Pb is difficult to obtain in bulk quantities

The combustion product, lead, causes air pollutions

n-butane and iso butane are an example of

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Chain isomerism

Positional isomerism

Meta merism

Functional group isomerism

Major component of natural gas is:

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Ethane

Ethene

Propane

Methane

Which is not a nucleophile

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Benzene

Chlorine

Ethene

Ethanol

The percentage of methane in natural gas is

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50%

60%

85%

90%

I-Chloropropane has two isomers, it is an example of

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Chain isomerism

Position isomerism

Functional group isomerism

Metamerism

Which of the following has linear shape?

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SP

SP²

SP³

None of the above

The rotation of two carbon atoms joined by double bond would happened only if

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Pi bond is broken

Sigma bond is broken

Both bonds are broken

None of above

Wohler succeeded in obtaining, urea from

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Cyanogen

Ammonium cyanate

Ammonium hydroxide

None of these

In sp²type hybridization the three equivalent sp²orbitals lie in the same plane and at angle of

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0°

60°

120°

180°

Closed chain compound can be classified into

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Homocyclic

Hetrocyclic

Aliphatic

Both a and b

Normal by product of cracking is

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Ethane

Butane

Benzene

All of them

The bond angle between hydrogen atoms and carbon in alkane is

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104.5°

107.5°

109.5°

120.5°

Compounds of carbon and hydrogen in which the tetra valency of carbon is fully satisfied are called,

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Saturated

Un-saturated

Magnetic

Para-magnetic

Fossil fuels consist of :

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Coal

Natural gas

Petroleum

All of these

Coal is obtained from dead remains of

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Plants

Animals

Both a and b

None

The atom other than C in a hetrocyclic compound is called as

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Hetroatom

Hetroion

Hetromolecule

Hetroelement

Hydrocarbons contain

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C and S only

C and H only

C, H, and O only

C, H, O and N only

Linear shape is associated with set of hybrid orbitals?

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sp

sp2

sp3

dsp2

Acetylene had a characteristic ethereal smell resembling that of

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Ginger

Vinegar

Garlic

Onion

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ECAT Chemistry Chapter 18 Fundamental Principles of Organic Chemistry Online Test MCQs With Answers

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