IIT%20JEE/IIT%20JEE%20%20Fundamental%20Concepts%20Of%20Organic%20Chemistry Sample Test,Sample questions

Question:
.An example of cinjugated diene is1 4-Pentadiene

1.1 4-Pentadiene

2.1 5-Hexadiene

3.1 2-Butadiene

4.1 3-Pentadiene.

Posted Date:-2021-10-04 18:15:34


Question:
.Different arrangement of atoms that can be converted into one another by rotation about single bonds are calledconformation

1.trans-isomers

2.conformation

3.enantiomers

4.None of these

Posted Date:-2021-10-04 18:15:34


Question:
.In acetylene C-C-H bond angle is

1.144 degree

2.180 degree

3.90 degree

4.96 degree

Posted Date:-2021-10-04 18:15:34


Question:
.In iso-octane (2 2-4-trimethylpentane) the number of primary hydrogen atoms is

1.12

2.15

3.13

4.14

Posted Date:-2021-10-04 18:15:34


Question:
.In neopentane the number of primary carbon atoms are

1.4

2.3

3.2

4.1

Posted Date:-2021-10-04 18:15:34


Question:
.Liquids whose molecules are held together by hydrogen bonds are called

1.associated liquids

2.aprotonic solvents

3.primary liquid

4.hydrated liquids

Posted Date:-2021-10-04 18:15:34


Question:
.Optical activity in a compound can be detected by means of

1.voltmeter

2.potentiometer

3.ammeter

4.polarimeter

Posted Date:-2021-10-04 18:15:34


Question:
.The no. of possible isomers of 1 2 dichloroethane are

1.2

2.3

3.4

4.infinite

Posted Date:-2021-10-04 18:15:34


Question:
.The number of possible metamers of pentonone are513

1.5

2.1

3.3

4.6

Posted Date:-2021-10-04 18:15:34


Question:
.The process of separating a racemic mixture into optical isomers is known as

1.dissolution

2.isomerisation

3.resolution

4.pasteurization

Posted Date:-2021-10-04 18:15:34


Question:
.The tetrahedral nature of the carbon was given by

1.Vant Hoff

2.Lewis

3.Le-Bel and Vant Hoff

4.None of the above

Posted Date:-2021-10-04 18:15:34


Question:
.The total no. of possible isomers of ethane are

1.10

2.20

3.4

4.infinite

Posted Date:-2021-10-04 18:15:34


Question:
.Two or more compounds having the same number and kind of atoms and same molecular weight are called

1.isobars

2.isotones

3.isomers

4.isochors

Posted Date:-2021-10-04 18:15:34


Question:
.What is not truen about homologous series ?

1.All the members have similar chemical properties

2.They have identical physical properties

3.They can be represented by a general formula

4.Adjacent members deiffer in molecular mass by 14.

Posted Date:-2021-10-04 18:15:34


Question:
.Which of the following compounds has least dipole moment?

1.1 2-Dichlorobenzene

2.1 3-Dichlorobenzene

3.1 4-Dichlorobenzene

4.All have same dipole moment.

Posted Date:-2021-10-04 18:15:34


Question:
.Which of the following compounds is chiral?

1.2 chloro 2 methyl butane

2.3 chloro hexane

3.2 chloro pentane

4.1-chloro pentane

Posted Date:-2021-10-04 18:15:34


Question:
.Which of the following have zero dipole moment?

1.2 methyl propane

2.trans-2 butene

3.cis-2 butene

4.butane-1

Posted Date:-2021-10-04 18:15:34


Question:
.Which of the following molecules does not contains any secondary hydrogen atom?

1.n-Pentane

2.neo-Pentane

3.neo-Hexane

4.iso-Pentane.

Posted Date:-2021-10-04 18:15:34


Question:
A nucleophile is a

1.Lewis base

2.Lewis acid

3.neither a Lewis acid nor a Lewis base

4.both A & B

Posted Date:-2021-10-04 18:15:34


Question:
Alcohols are isomeric with

1.ketones

2.ethers

3.amines

4.acids

Posted Date:-2021-10-04 18:15:34


Question:
All the members of a homologous series have same

1.Molecular mass

2.Molecular formula

3.Empirical formula

4.General molecular formula.

Posted Date:-2021-10-04 18:15:34


Question:
An electrophile is a/an

1.Lewis base

2.Lewis acid

3.electron deficient species

4.Both A and B

Posted Date:-2021-10-04 18:15:34


Question:
Carbanions are isoelectronic with

1.ethers

2.alcohols

3.amines

4.carboxylic acids

Posted Date:-2021-10-04 18:15:34


Question:
Carbocation (or carbonium ion) is

1.a set of carbon atoms

2.an electrophile

3.a free radical

4.a nucleophile

Posted Date:-2021-10-04 18:15:34


Question:
Carbonium ions contain only??.electrons around the carbon core.2659

1.2

2.6

3.5

4.9

Posted Date:-2021-10-04 18:15:34


Question:
Carboxylic acids are isomeric withacid anhydrides

1.amines

2.esters

3.aldehydes

4.acid anhydrides

Posted Date:-2021-10-04 18:15:34


Question:
Chain isomers differ w.r.t.

1.position of substituent

2.position of functional group

3.chemical effect

4.root word

Posted Date:-2021-10-04 18:15:34


Question:
Decomposition of a compound by the action of heat is known as

1.decomposition

2.knocking

3.smelting

4.pyrolysis

Posted Date:-2021-10-04 18:15:34


Question:
Diastereomers are a pair

1.stereoisomers that cannot be separated from each other

2.stereoisomers that are not minor image of each other

3.stereoisomers that have identical chemical properties

4.stereoisomers that are minor image of each other

Posted Date:-2021-10-04 18:15:34


Question:
Diethyl amine and methylk propylamines are

1.metamers

2.tautomers

3.dynamic isomers

4.optical isomers

Posted Date:-2021-10-04 18:15:34


Question:
Diethyl amine and methylk propylamines areANSWER : : metamers

1.metamers

2.tautomers

3.dynamic isomers

4.optical isomers

Posted Date:-2021-10-04 18:15:34


Question:
Geometrical isomerism exist due to the presence of

1.single bond between C and C

2.double bond between C and C

3.triple bond between C and C

4.All the above

Posted Date:-2021-10-04 18:15:34


Question:
he IUPAC name of isoprene is

1.1 3-Butadiene

2.2-Methyl-1 3-butadiene

3.2-Methyl-1-butene

4.3-Methyl-1-butene.

Posted Date:-2021-10-04 18:15:34


Question:
Hetrolytic fission results in the formation of

1.electrophile

2.free radicals

3.electrophile and nucleophile

4.electrons

Posted Date:-2021-10-04 18:15:34


Question:
In 19. In iso-octane (2 2 4-trimethylpentane) the number of tertiary hydrogen atoms is

1.One

2.Two

3.Three

4.Four.

Posted Date:-2021-10-04 18:15:34


Question:
In isopentane the number of secondary carbon atom is12

1.1

2.2

3.3

4.0

Posted Date:-2021-10-04 18:15:34


Question:
In substitution reactions of tertiary halide the ionisation of halogen atom as negative ion is facilitated by

1.electron attracting group

2.electron repelling group

3.free radical

4.All the above

Posted Date:-2021-10-04 18:15:34


Question:
In the case of o-chlorophenol there exist

1.intramolecular hydrogen bonding

2.intermolecular covalent bonding

3.no hydrogen bonding

4.both inter and intramolecular hydrogen bonding

Posted Date:-2021-10-04 18:15:34


Question:
IUPAC name of propargyl alcohol is

1.Prop-2-yn-1-ol

2.Prop-2-en-1-ol

3.Prop-1-en-2-ol

4.Prop-1-yn-2-ol.

Posted Date:-2021-10-04 18:15:34


Question:
Molecules that are not superimposable on their mirror images aresymmetric

1.achiral

2.symmetric

3.asymmetric

4.chiral

Posted Date:-2021-10-04 18:15:34


Question:
Number of sec-H atoms in iso-butane is

1.1

2.9

3.4

4.none.

Posted Date:-2021-10-04 18:15:34


Question:
Paraffins is the common name used for

1.Alkanes

2.Alkenes

3.Alkynes

4.Arenes.

Posted Date:-2021-10-04 18:15:34


Question:
Sulphur trioxide isa base

1.a Lewis base

2.a base

3.nucleophile

4.an electrophile

Posted Date:-2021-10-04 18:15:34


Question:
The forces between the molecules of a non-polar compounds arehybrid forces

1.Van der Walls forces

2.ionic bonding

3.hybrid forces

4.dipole forces

Posted Date:-2021-10-04 18:15:34


Question:
The IUPAC name of allylene is

1.Propyne

2.Propene

3.2-Butyne

4.1-Butyne.

Posted Date:-2021-10-04 18:15:34


Question:
The IUPAC name of crotyl chloride is

1.1-Chloro-1-butene

2.1-Chloro-2-butene

3.2-Chloro-2-butene

4.3-Chloro-1-butene.

Posted Date:-2021-10-04 18:15:34


Question:
The IUPAC name of crotyl chloride is

1.1-Chloro-1-butene

2.1-Chloro-2-butene

3.2-Chloro-2-butene

4.3-Chloro-1-butene.

Posted Date:-2021-10-04 18:15:34


Question:
The most volatile amongst the following is

1.p-nitrophenol

2.m-nitrophenol

3.o-nitrophenol

4.none of these

Posted Date:-2021-10-04 18:15:34


Question:
The number of pi bonds in isoprene is2310.

1.2

2.3

3.1

4.0

Posted Date:-2021-10-04 18:15:34


Question:
The secondary suffix in the IUPAC names of ketones is----

1.al

2.one

3.ol

4.oate.

Posted Date:-2021-10-04 18:15:34


Question:
The tetrahedral nature of the carbon was given by

1.Vant Hoff

2.Lewis

3.Le-Bel and Vant Hoff

4.None of the above

Posted Date:-2021-10-04 18:15:34


Question:
What is not true about homologous series?Adjacent members differ in molecular mass by 14.

1.All the members have similar chemical properties

2.They have identical physical properties

3.They can be represented by a general formula

4.Adjacent members differ in molecular mass by 14.

Posted Date:-2021-10-04 18:15:34


Question:
Which of the following alkanes has neither secondary nor tertiary hydrogens?neo-Pentane.

1.iso-Butane

2.iso-Pentane

3.Pentane

4.neo-Pentane.

Posted Date:-2021-10-04 18:15:34


Question:
Which of the following carbonium ions is the most stable?

1.triphenyl methyl

2.diphenyl methyl

3.benzyl

4.All the above

Posted Date:-2021-10-04 18:15:34


Question:
Which of the following compounds contains maximum number of tertiary hydrogen atoms?

1.n-Hexane

2.2-2-Dimethylbutane

3.2 3-Dimethylbytene

4.2-Metylpentane.

Posted Date:-2021-10-04 18:15:34


Question:
Which of the following has zero dipole moment ?

1.1-Butene

2.cis-2-Butene

3.trans-2-Butene

4.2-Methyl-1-propene.

Posted Date:-2021-10-04 18:15:34


Question:
Which of the following is optically active?

1.isobutyl alcohol

2.sec butyl alcohol

3.tert butyl alcohol

4.p-butyl alcohol

Posted Date:-2021-10-04 18:15:34


Question:
Which of the following is the functional isomer of methyl acetate?

1.Ethyl acetate

2.Propanoic acid

3.Ethyl formate

4.Propanone.

Posted Date:-2021-10-04 18:15:34


Question:
Which of the following represents the iso-butyl radical ?

1.Ethane

2.Methane

3.Ethyne

4.Benzene.

Posted Date:-2021-10-04 18:15:34


Question:
Which of the following type of isomerism is found in the members of the same homologous series?Metamerism

1.Functional isomerism

2.Position isomerism

3.Metamerism

4.None of these

Posted Date:-2021-10-04 18:15:34


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