Hydrocarbons Quiz 3

1 / 23

Which among the following is not a property of aromatic hydrocarbon?

There exists a strong ratio between carbon and hydrogen

These compounds have very good aromaticity

These compounds do not undergo nucleophilic substitutions but they undergo electrophilic substitutions

These compounds have excellent stability

2 / 23

Identify the incorrect statement regarding conjugated double bonds in alkadiene.

Compounds with a double bond exhibit this type of bond

1,3 pentadiene is an example for this bond

1,3 alkadienes have conjugated double bond

The conjugated dienes have properties similar to that of alkenes

3 / 23

Arenes are _________

volatile

Mostly gases

Water soluble

Non-carcinogenic

4 / 23

Identify the alicyclic hydrocarbon which is highly flammable.

Cyclooctane

Cyclopentane

Cycloheptane

Cyclopropane

5 / 23

Which among the following compounds explodes on contact with oxygen?

Cyclopropane

Cyclohexane

Cyclopentane

Cyclobutane

6 / 23

Identify the incorrect statement regarding cyclobutane.

These exist in nature as colourless gas

These compounds often show butterfly conformation

Cyclobutane is a commercially important compound

The carbon atoms in the cyclobutane are non-coplanar

7 / 23

Identify the statement which is related to Diels-Alder reaction?

Cyclic dienes react very slow than the linear chain dienes

It is very stereospecific

Molecular distortion takes place

Addition of maleic anhydride to cyclopentadiene causes diene and dienophile to produce different products

8 / 23

Identify the incorrect statement regarding alkadienes.

Alkadienes also undergo hydrobromination

Dienes show cis-trans isomerism

Dienophile supports alkadienes

Conjugated dienes have better stability compared to other dienes

9 / 23

Identify the incorrect statement regarding cycloalkenes.

The conjugated double bonds in them increase their stability

These undergo polymerization

They occur in gaseous form in nature

The bonds in them are fewer compared to those in alkenes

10 / 23

Identify the incorrect statement regarding alkadiene.

These are acyclic acids

These compounds have only one C=C bonds

These are unsaturated hydrocarbons

These compounds have the general formula CnH2n-2

11 / 23

Which among these is the simplest example for polycyclic arenes?

Dibenz-anthracene

Pyrene

Naphthalene

Benzacephenanthrylene

12 / 23

The main sources of these arenes are _________

Natural gas

Petroleum

Biogas and petroleum

Petroleum and coal tar

13 / 23

Select the incorrect option.

Benzene is the simplest hydrocarbon

Some of the aromatic compounds are ring-shaped

The aromatic hydrocarbon has a pleasant aroma (smell)

Aromatic hydrocarbon can be either mono or polycyclic

14 / 23

Arenes does not undergo ___________

Cyclo additions

Coupling reaction

Halogenation

Dehydrogenation

15 / 23

Which among these is not a representative arene compound?

Durene

Mesitylene

Picric chloride

Aspirin

16 / 23

Identify the incorrect statement regarding cyclohexane.

It is non-polar

It is commercially used for variety of applications

It a hydrophilic hydrocarbon

It serves as an organic solvent

17 / 23

Conjugated diene reacts with which among the following to form a cyclohexene?

Dienophile

Hexane

Tribromo phenol

Phenol

18 / 23

A molecule in which more than one single bond separates two double bonds are called as ____________

Coordinate bond

Cumulative double bond

Isolated double bond

Conjugated double bond

19 / 23

Isolated dienes are similar in property to ______________

Diolefins

Tetraolefins

Triolefins

Monoolefins

20 / 23

Identify the one which is the perfect example for Isolated double bond?

1,3 pentadiene

1,5 butadiene

1,2 pentadiene

1,4 pentadiene

21 / 23

Identify the correct statement which is related to aromatic hydrocarbon?

It has only pi bonds

It has a sigma and two pi bonds

It has a sigma and delocalized pi bond

It has only sigma bonds

22 / 23

Alkadienes are classified into how many types?

23 / 23

Which among the following dienes undergo addition with the help of radical-chain mechanism?

Simple dienes

Cumulated dienes

Conjugated dienes

Isolated dienes

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