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Chemistry Unit 8 Test

Total questions: 40

Worksheet time: 3600secs

Name
Class
Date
1.

Correct IUPAC name of the given structure

a)

2, 4, 5-Trimethyl-4-ethyl hexane

b)

2, 3, 5-Trimethyl-3-ethyl hexane

c)

3-Ethyl, 2, 3, 5-trimethyl hexane

d)

All are correct

2.

When vapor of ethyl alcohol are passed over heated alumina, product formed is

a)

Ethane

b)

Ethene

c)

Ethyne

d)

Benzene

3.

Intermediate formed during addition of HCl to ethene is

a)

CH CH-

b)

CH3CH2+

c)

+CH2 – CH2 – Cl

d)
4.

Alkenes cannot undergo

a)

Addition reaction

b)

Oxidation reaction

c)

Polymerization reaction

d)

Elimination reaction

5.

Addition product of acetylene is

a)

CH3 - CH3

b)
c)
d)

All of above

6.

1-Butyne and 2-Butyne can be distinguished by

a)

Br2/CCl4

b)

KMnO4

c)

HCl

d)

AgNO3/NH4OH

7.

Which among the following product is formed when ethyne is hydrated

a)

Formaldehyde

b)

Formic acid

c)

Acetaldehyde

d)

Acetic acid

8.

Number of atoms in benzene which are Co-planner

a)

12

b)

6

c)

3

d)

18

9.

Toluene when halogenated in the presence of sunlight, final product obtained is

a)
b)
c)
d)
10.

Which of the following derivative of benzene will be sulphonated more readily

a)
b)
c)
d)
11.

Cycloalkenes are represented by general formula

a)

CnH2n+2

b)

CnH2n-2

c)

CnH2n

d)

CnHn

12.

Which of the following has least boiling point

a)

2, 2-Dimethylpropane

b)

2-Methylpropane

c)

n-Pentane

d)

n-Butane

13.

Choose the correct name of the compound given below

Ag C ≡ CAg

a)

Silver di-carbide

b)

Silver carbide

c)

Alkynide

d)

None of these

14.

A hydrocarbon ‘X’ on hydrogenation give isopentane. ‘X’ is

a)

3-Methyl-1-butene

b)

2-Methyl-1-butene

c)

2-Methyl-2-butene

d)

All of these

15.

Hydrohalogenation of alkene form alkyl halide via         ion

a)

Carbonium

b)

Alkoxide

c)

Carbanion

d)

All are possible

16.

The correct name of the given compound C6H5COCH3 is

a)

Methyl phenyl ketone

b)

Acetophenone

c)

Phenyl ethanone

d)

All of these

17.

The correct order of reactivity of hydrocarbons towards electrophile is

a)

Alkene > Alkane > Alkyne

b)

 Alkene > Alkyne > Alkane  

c)

Alkane > Alkene > Alkyne

d)

Alkyne > Alkene > Alkane

18.

Which of the following alkyne shows acidic behavior?

a)

A) Propyne

b)

B) Acetylene

c)

C) 2-Butyne

d)

D) Both A and B

19.

The chlorination of alkane involves the mechanism

a)

β - elimination

b)

Nucleophilic substitutions

c)

Electrophilic substitution

d)

Free radical substitution

20.

A compound 'X' is treated with Zn in an anhydrous solvent like methanol or acetic acid. It produce 2-methyl-2-butene, the compound X is

a)

1, 2-dibromo-2-methylbutane

b)

2, 3-dibromo-2-methylbutane

c)

2, 2-dibromo-2-methylbutane

d)

2, 3-dibromo-3-methylbutane

21.

Which compound can be obtained from ethene by hydrogenation

(I) CH3CH3                                   (II) CH3COOH           (III) CH3OCH3

a)

Only I

b)

Only III

c)

Only II

d)

Only II and III

22.

Acetone is prepared by the hydration of propyne through formation of

a)

Propanol

b)

Propyne

c)

Propen-2-ol

d)

Propane

23.

Benzenonium ion produced during sulphonation of benzene

a)
b)
c)
d)
24.

Alkynes can be prepared by the dehalogenation of

a)

a) Tetrahalide

b)

b) Geminal dihalides

c)

c) Vicinal dihalides

d)

Both B. and C

25.

The step in which radicals react with radical in free radicals mechanism is called

a)

Termination

b)

Propagation

c)

Initiation

d)

None of the above

26.

Ethoxy ethane and methoxy propane show which of the following type of isomerism:

a)

Position isomerism

b)

Metamerism

c)

Tautomerism

d)

Cis-trans isomerism

27.

Which of the following compounds exhibits geometrical isomerism?

a)

1-Pentene

b)

2-Methyl-2-pentene

c)

2-Pentene

d)

2-Methyl-2-butene

28.

Consider the following structure of alkane:

Which of the following letters denotes tertiary carbon?

a)

Q

b)

X

c)

Y

d)

Z

29.

All of the following show functional group isomerism EXCEPT:

a)

Alcohol and ether

b)

Aldehyde and Ketone

c)

Ester and acid anhydride

d)

Carboxylic acid and ester

30.

Which of the following is the structure of benzyl group?

a)

C6H5 –CO–

b)

C6H5 – CH2 –

c)

C6H5  –  ╽CH−_{\ ╽}^{CH-}  

d)

Carboxylic acid and ester

31.

Which of the following statements about alkenes and arenes is incorrect?

a)

A

b)

B

c)

C

d)

D

32.

Alkanes h a v e boiling points because they a r e and have________ intermolecular forces:

a)

Low, non-polar, weak

b)

High, non-polar, strong

c)

High, non-polar, weak

d)

High, polar, strong

33.

Consider the following structure of alkene:

The correct name of the given structure of alkene according to IUPAC is:

a)

4-n-Propyl-4-hexene

b)

3-n-Propyl-3-hexene

c)

3-n-Propyl-2-hexene

d)

3-n-Propyl-3-hexane

34.

Consider the following structure of hydrocarbon which have double and triple bonds:

Which of the following is the correct IUPAC name of above hydrocarbon?

a)

3-Methyl-l-penten-4-yne

b)

3-Methyl-4-penten-l-yne

c)

2-Methyi-l-penten-3-yne

d)

3-Methyl-3-penten-l-yne

35.

Al of the following are correctly matched EXCEPT;

a)

A

b)

B

c)

C

d)

D

36.

Benzene does not undergo:

a)

a) Polymerization process only

b)

b) Elimination reaction only

c)

c) Both ‘A’ and ‘B’

d)

Neither ‘A’ nor ‘B’

37.

Consider the following reaction:

Which of the following is correct sequence for the product shown as: X, Y, Z?

a)

Ethene, 1, 2-Dibromoethane, Ethyne

b)

Ethane, 1, 2-Dibromoethene, Ethyne

c)

Ethyne, 1, 2-Dibromoethene, Ethane

d)

Ethyne, ethane, 1, 2-Dibromoethane

38.

Which of the following hydrocarbons is more reactive w.r.t. electrophilic addition reaction?

a)

Benzene

b)

Ethene

c)

Ethyne

d)

Propane

39.

Among the following compounds that can be most readily nitrated is:

a)

Benzoic acid

b)

Bromobenzene

c)

Benzene

d)

Aniline

40.

Which of the following methods is not used to prepare alkenes?

a)

Dehydration of alcohol

b)

Dehydrohalogenation of alkyl halide

c)

Dehalogenation of vicinal dihalides

d)

Dehalogenation of tetrahalides

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