Hydrocarbons Quiz 3

1 / 23

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

It is very stereospecific

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

Molecular distortion takes place

Cyclic dienes react very slow than the linear chain dienes

2 / 23

Isolated dienes are similar in property to ______________

Monoolefins

Diolefins

Tetraolefins

Triolefins

3 / 23

Identify the incorrect statement regarding cyclobutane.

These compounds often show butterfly conformation

These exist in nature as colourless gas

The carbon atoms in the cyclobutane are non-coplanar

Cyclobutane is a commercially important compound

4 / 23

Identify the incorrect statement regarding alkadienes.

Alkadienes also undergo hydrobromination

Dienes show cis-trans isomerism

Conjugated dienes have better stability compared to other dienes

Dienophile supports alkadienes

5 / 23

Identify the incorrect statement regarding conjugated double bonds in alkadiene.

Compounds with a double bond exhibit this type of bond

1,3 alkadienes have conjugated double bond

1,3 pentadiene is an example for this bond

The conjugated dienes have properties similar to that of alkenes

6 / 23

Select the incorrect option.

Benzene is the simplest hydrocarbon

Aromatic hydrocarbon can be either mono or polycyclic

Some of the aromatic compounds are ring-shaped

The aromatic hydrocarbon has a pleasant aroma (smell)

7 / 23

Identify the correct statement which is related to aromatic hydrocarbon?

It has only pi bonds

It has only sigma bonds

It has a sigma and two pi bonds

It has a sigma and delocalized pi bond

8 / 23

Which among these is not a representative arene compound?

Aspirin

Mesitylene

Picric chloride

Durene

9 / 23

Identify the incorrect statement regarding cycloalkenes.

They occur in gaseous form in nature

The conjugated double bonds in them increase their stability

The bonds in them are fewer compared to those in alkenes

These undergo polymerization

10 / 23

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

1,3 pentadiene

1,4 pentadiene

1,2 pentadiene

1,5 butadiene

11 / 23

Which among these is the simplest example for polycyclic arenes?

Dibenz-anthracene

Pyrene

Benzacephenanthrylene

Naphthalene

12 / 23

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

Cumulated dienes

Simple dienes

Isolated dienes

Conjugated dienes

13 / 23

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

Hexane

Tribromo phenol

Dienophile

Phenol

14 / 23

Which among the following compounds explodes on contact with oxygen?

Cyclobutane

Cyclopentane

Cyclohexane

Cyclopropane

15 / 23

The main sources of these arenes are _________

Biogas and petroleum

Petroleum and coal tar

Natural gas

Petroleum

16 / 23

Alkadienes are classified into how many types?

17 / 23

Arenes are _________

Mostly gases

Non-carcinogenic

Water soluble

volatile

18 / 23

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

Isolated double bond

Coordinate bond

Conjugated double bond

Cumulative double bond

19 / 23

Identify the incorrect statement regarding alkadiene.

These are acyclic acids

These compounds have only one C=C bonds

These compounds have the general formula CnH2n-2

These are unsaturated hydrocarbons

20 / 23

Identify the alicyclic hydrocarbon which is highly flammable.

Cyclopropane

Cycloheptane

Cyclooctane

Cyclopentane

21 / 23

Arenes does not undergo ___________

Dehydrogenation

Cyclo additions

Halogenation

Coupling reaction

22 / 23

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

These compounds have excellent stability

There exists a strong ratio between carbon and hydrogen

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

These compounds have very good aromaticity

23 / 23

Identify the incorrect statement regarding cyclohexane.

It a hydrophilic hydrocarbon

It is non-polar

It is commercially used for variety of applications

It serves as an organic solvent

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