IIT JEE/IIT JEE Chemistry Of Hydrocarbons Part 2 Sample Test,Sample questions

Question:
.Gas oil is the same as





1.diesel oil

2.petrol

3.kerosene oil

4.lubricating oil


Question:
.Isopropyl bromide on Wurtz reaction gives




1.Hexane

2.Propane

3.2, 3--Dimethylbutane

4.Neohexane.


Question:
.see-Butyl chloride on boiling with alc. KOH gives ......... as the main product.

1.1-Butene

2.2-Butene

3.1-Butanol

4.2-Butanol.


Question:
.Starting from benzene, toluene is prepared by




1.Reimer-Tiemann reaction

2.Friedel-Crafts acylation

3.Cannizzaros reaction

4.Kolbes reaction


Question:
.The ozonolysis is used to locate the presence of




1.a single bond between C-C atoms

2.a double bond between C-C atoms

3.a triple bond between C and C atoms

4.None of these


Question:
.Which of the following compounds has the highest boiling point?




1.n-Hexane

2.n-Pentane

3.2, 2-Dimethylpropane

4.2-Methylbutane


Question:
.Which of the following hydrocarbons would give a red precipitate on treatment with ammonical cuprous chloride solution ?

1.2-Butene

2.2-Butyne

3.1, 3-Butadiene

4.1-Butyne.


Question:
.Which of the following is linear?




1.Ethyne

2.Methane

3.Ethylene

4.Both A and C


Question:
1, 1-Dibromoethane when heated with zinc dust produces





1.Ethyl bromide

2.Ethene

3.Vinyl bromide

4.2-Butene.


Question:
2, 3-Dibromobutane, when heat with zinc dust, yields




.

1.2-Butene

2.2-Butyne

3.1-Butene

4.Butane


Question:
A fuel having high octane number containing mainly





1.branched hydrocarbons

2.straight chain alkane

3.alkanes

4.All the above


Question:
A mixture of sodium butanoate and 2-methyl sodium propanoate is heated with sodalime. The resulting compound will be



methane

1.propane and propyne

2.a mixture of propane and 2-methyl propane

3.methane

4.propane


Question:
Acetylene can be converted into methyl vinyl ether on reaction with

1.Vinyl alcohol

2.Methyl alcohol

3.Dimethyl ether

4.Methanal.


Question:
Addition of HBr to iso-butylene mainly gives




1.iso-Butyl bromide

2.n-Butyl bromide

3.tert-Butyl bromide

4.sec-Butyl bromide.


Question:
Addition of HCl to vinyl chloride gives 1, 1-dichlorocthane because of




None of these.

1.Inductive effect of Cl

2.Mesomeric effect of Cl

3.Restricted rotation around double bond

4.None of these.


Question:
Alkanes mainly show reactions having




1.Free radical formation

2.Ionic elimination

3.Ionic formation

4.Heat/photochemical substitution.


Question:
Allylic bromination of an olefin is




1.Nucleophilic substitution

2.Electrophilic substitution

3.Free radical substitution

4.Electrophilic addition.


Question:
Among the following, the compound that can be most readily sulphonated is




1.Nitrobenzene

2.1, 3-Dinitrobenzene

3.Chlorobenzene

4.Toluene.


Question:
An example of conjugated diene is




1.1, 4-Pentadiene

2.1, 5-Hexadiene

3.1, 2-Butadiene

4.1, 3-Pentadiene.


Question:
Aqueous sulphuric acid reacts with 2-methyl-1-butene to give predominantly




1.iso-Butyl hydrogen sulphate

2.2-Metyl-2-butanol

3.2-Methyl-1-butanol

4.sec-Butyl hydrogen sulphate.


Question:
Benzene on ozonolysis yields




1.Glyoxal

2.Acetone

3.Ethanal

4.Methanal.


Question:
Benzene reacts with excess of cholrine in sunlight to form

Hexachlorobenzene


1.Hexachlorobenzene

2.m-Dichlorobenzene

3.Chlorobenzene

4.Benzene hexzchlorode.


Question:
Electrolysis of potassium ethanoate gives




1.methane

2.propene

3.ethane

4.ethyne


Question:
Ethyne can be prepared in a single step from




1.Calcium carbide

2.Ethylidene bromide

3.Ethylene bromide

4.All of these.


Question:
Gasoline contains hydrocarbons in the rane

C-7 to C-12


1.C-7 to C-12

2.C-12 to C-15

3.C-4 to C-6

4.C-5 to C-8.


Question:
Halogenation of alkanes is an example of




.

1.Electrophilic substitution

2.Nucleopholic substitution

3.Free radical substitution

4.Reduction


Question:
he number of litres of air needed to burn completely 8 litres of acetylene is

100
75
90
40

1.100

2.75

3.90

4.40


Question:
Mesitylene can be obtained by polymerization of

Ethyne


1.Ethyne

2.Ethene

3.Propene

4.Propyne.


Question:
On chlorination, nitrobenzene gives ........ as the major product.




1.o-Chloro nitrobenzene

2.p-chloro nitrobenzene

3.m-chloro nitrobenzene

4.All the three.


Question:
Ozonolysis of p-xylene gives




1.Glyoxal

2.Methyl glyoxal

3.Both of these

4.None of these.


Question:
Propene + HBr gives





1.1, 3-Dibromopropane

2.2-Bromopropane

3.1-Bromo propane

4.1, 2-Dibromopropane.


Question:
Propyne on reaction with aqueous chlorine gives




1.1, 1, 2, 2-Tetrachloropropane

2.1, 2-Dichloropropene

3.1, 1-Dichloropropanone

4.2, 2-dichloropropanal.


Question:
Starting from which of t efollowing compounds can methane be prepared in one step ?




All of these.

1.Sodium acetate

2.Aluminium carbide

3.Methyl magnesium bromide

4.All of these.


Question:
Starting from which of the following compounds methane as well as ethane can be prepared in separate single steps ?




1.Ethyl magnesium bromide

2.Methyl bromide

3.Sodium propanoate

4.Ethyl alcohol.


Question:
Sulphur monochloride reacts with .... to give mustard gas.




1.Eathane

2.Ethene

3.Ethyne

4.Methane.


Question:
The addition of HBr to styrene gives ..... as the major product.

1-Bromo-1-phenylethane


1.1-Bromo-1-phenylethane

2.2-Bromo-1phenylethane

3.Benzyl chloride

4.p-Bromophentl ethylene.


Question:
The catalyst used in the manufacture of polyethene by Ziegler method is




1.Titanium tetrachloride and triphenyl aluminium

2.Titanium tetrachloride and trimethyl aluminimum

3.Titanium dioxide

4.Titanium isopropoxide.


Question:
The minimum temp. at which oil gives sufficient vapours to form an explosive mixture with air is known as




last point

1.optimum temp.

2.kindling temp.

3.flash point

4.last point


Question:
To prepare a pure sample of n-hexane using sodium metal as one reactant, the other reactant will be




1.Ethyl chloride and n-butyl chloride

2.Methyl chloride and n-pentyl bromide

3.Ethyl bromide and n-bytyl bromide

4.n-Propyl bromide.


Question:
Towards electrophilic substitution the most reactive will be




1.Nitrobenzene

2.Aniline

3.Aniline hydrochloride

4.N-Acetylaniline.


Question:
When HBr adds to 1-butene in the presence of benzoyl peroxide, the product is




1.1-Bromobutane

2.2-Buromobutane

3.1-Bromobutene

4.2-Bromobutene.


Question:
When HCl is passed through propene in the presence of benzoyl peroxide, it gives




1.n-Propyl chloride

2.iso-Propyl chloride

3.Allyl chloride

4.No reaction.


Question:
Which of the following can form metallic derivatives by replacement of H-atoms ?




1.Ethene

2.Methane

3.2-Butyne

4.1-Pentyne.


Question:
Which of the following derivatives of benzene would undergo nitration most readily?




1.Nitrobenzene

2.Chlorobenzene

3.Toluene

4.Benzoic acid.


Question:
Which of the following is least acidic ?




1.Ethyne

2.Propyne

3.1-Butyne

4.2-Butyne.


Question:
Which of the following is most acidic ?




1.Ethyne

2.Propyne

3.1-Butyne

4.2-Butyne.


Question:
Which of the following is most acidic ?

Methane

Ethylene
.

1.Methane

2.Ehtane

3.Ethylene

4.Acatylene


Question:
Which one of the following has the smallest heat of hydrogenation per mole?



cis-2Butene

1.1-butene

2.trans-2-Butene

3.cis-2Butene

4.1, 3-Buteadiene.


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