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Questionnaire 4 Chem (12th)

Total questions: 20

Worksheet time: 20mins

Name
Class
Date
1.

Name the following compound

a)

Benzene

b)

Benzol

c)

Phenol

2.

Name the compound

a)

Methane benzene

b)

Toluene

c)

Benzene methane

3.

Name this compound

a)

ortho-propylbenzene

b)

1,3-dipropylbenzene

c)

ortho-dipropylbenzene

4.

Which compound below is aromatic?

a)
b)
c)
5.

How many sigma bonds are there in benzene?

a)

4

b)

6

c)

12

6.

What is the global formula of benzene?

a)

C6H12

b)

C6H6

c)

C6H10

7.

Name the compound

a)

Nitro benzene

b)

Ammonia benzene

c)

Aniline

8.

How many pi bonds are there in benzene?

a)

6

b)

2

c)

3

9.

Explain the concept of resonance in benzene

4 lines
10.

Explain the unusual stability of Benzene. Hint: Pi bonds

4 lines
11.

What is the main source of benzene?

a)

Oil (Petroleum)

b)

Minerals

c)

Coal Tar

12.

What is benzene's IUPAC name?

a)

Cyclohexa-1,2,3-triene

b)

Cyclopenta-1,3,5-triene

c)

Cyclohexa-1,3,5-triene

13.

What is the name of this compound?

a)

para-chlorophenol

b)

meta-chlorophenol

c)

ortho-chlorophenol

14.

What is the name of the compound?

a)

propyl hydroxy benzene

b)

3-phenyl-1-propanol

c)

3-phenyl-1-butanol

15.

Name the substituent

a)

Benzene

b)

Benzyl

c)

Phenyl

16.

In benzene the director para is referred to carbon positions

a)

1, 3

b)

1, 4

c)

1, 2

17.

In benzene the director ortho is referred to carbon positions

a)

1,2

b)

1,3

c)

1,4

18.

Explain why is it impossible to have substituents in carbons 4a and 8a

4 lines
19.

What is this molecule?

a)

Anthracene

b)

Naphthalene

c)

Dibenzene

20.

Explain the reason why naphthalene can only have 5 pi bonds

4 lines