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XJEEWS2 14-07-25

Total questions: 29

Worksheet time: 15mins

Name
Class
Date
1.

The type of carbon atoms to form long chains or rings is known as ---

a)

Isomerism

b)

Hybridization

c)

Catenation

d)

Homologous series

2.

Organic compounds can be formed by

a)

Plants only

b)

Animals only

c)

Plants and animals

d)

Plants, animals and can be synthesized in the laboratory

3.

The type of chemical bonds observed in organic compounds is

a)

Metallic

b)

Complexes

c)

Covalent

d)

Electrovalent

4.

The first carbon compound prepared from its elements is

a)

Urea

b)

Acetic acid

c)

Methane

d)

Benzene

5.

The first organic compound synthesized in laboratory from in inorganic compound is

a)

NH4NCO

b)

NH2CONH2

c)

CH3COOH

d)

CH4

6.

The general formula of alkyne

a)

CnH2n+2

b)

CnH2n-2

c)

CnH2n-1

d)

CnH2n

7.

Which of the following is Alicyclic compounds?

a)

Cyclo hexene

b)

Cyclobutane

c)

Cyclohexane

d)

All of these

8.

Which of the following is Benzenoid?

a)

Aniline

b)

Cyclo butane

c)

Cyclohexane

d)

Azulene

9.

The series of organic compounds containing the same functional group and show similar properties but differ from preceding one by - CH2 unit

a)

Isomerism

b)

Hybridization

c)

Catenation

d)

Homologous series

10.

Which of following contains acetic acid?

a)

Vinegar

b)

Molasses

c)

Coal tar

d)

Butter

11.

The energy required for excitation of carbon atom is

a)

501.6 KJ/ mol

b)

827.0 KJ/ mol

c)

341KJ/ mol

d)

610 KJ/ mol

12.

Hybridization of second carbon iin propyne is

a)

sp

b)

sp2

c)

sp3

d)

sp3d

13.

First homologue of alkane is

a)

CH4

b)

C2H6

c)

C3H8

d)

C4H10

14.

Which of the following compounds given below contains only one kind of hybridization ( sp, sp2, sp3)

a)

CH3CH2CH2CH3

b)

CH3-CH=CH-CH3

c)

CH2=CH-CH=CH2

d)

Ethyne

15.

Compounds having equal number of hybrid orbitals among the following are

a)

n Butane

b)

Cyclo propane

c)

Cyclo butane

d)

n Hexane

16.

The next homologue of C2H2 is

a)

C3H6

b)

C3H4

c)

C2H6

d)

C3H8

17.

In a homologous series one of the homologue molecular weight is 16 amu. The next homologue's molecular weight will be ---- amu

a)

18

b)

36

c)

13

d)

30

18.

The general formula of alkyl halide is

a)

CnH2n+1X

b)

CnH2n+2

c)

CnH2n+1 COOH

d)

CnH2n+1OH

19.

What is the type of hybridization of each carbon in the following compounds?

a) CH4 b) C2H6 c) C2H4 d) C2H2

a)

a- sp3, b- sp3, c- sp2, d-sp

b)

a-sp2, b-sp, c- sp3, d-sp3

c)

a- sp, b- sp2, c-sp3, d-sp3

d)

a- sp3, b-sp2, c-sp, d- sp3

20.

The valency of carbon is

a)

4

b)

3

c)

2

d)

1

21.

Statement A: Charcoal burns without producing a flame

Statement B: Unsaturated hydrocarbons undergoes addition reaction

Statement C: saturated hydrocarbons burns with blue flame

a)

All statements are correct

b)

All statements are incorrect

c)

A, B are correct but C is incorrect

d)

A, B are incorrect and C is correct

22.

Which of the following is an aromatic compounds?

a)

Phenol

b)

Naphthalene

c)

Pyridine

d)

All

23.

Which of the following has maximum C- H bond length?

a)

C2H4

b)

C2H2

c)

C2H6

d)

C6H6

24.

Which of the following is linear in shape?

a)

Methane

b)

Ethane

c)

Ethene

d)

Ethyne

25.

The cylindrical shape of Alkynes is due to

a)

Three

b)

Three π C-C bonds

c)

Two sigma C- C bonds and two π

C-C bonds

d)

One sigma C- C bonds and two π C- C bonds

26.

C-C-C bond angle in Benzene is about

a)

109°28'

b)

180°

c)

120°

d)

100°

27.

How many sp2 - sp2 bonds are are between the carbons in following structure

H-C =_ C- CH2- CH2- CH2- CH= CH2

a)

3

b)

4

c)

1

d)

2

28.

How many pure orbitals are present in following compound?

HCΞC-CH2HCΞC-CH2-CH2CH2CH=CH2

a)

9

b)

10

c)

16

d)

12

29.

The ratio between pure and hybrid orbitals is?

a)

8:11

b)

8:7

c)

5:9

d)

1:2

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