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Carbon and its compounds

Total questions: 25

Worksheet time: 50mins

Name
Class
Date
1.

How many bonds will a C atom form?

a)

1

b)

2

c)

3

d)

4

2.
How many carbons are in the longest chain?
a)
5
b)
3
c)
1
d)
6
3.
What structure is shown in the diagram?
a)
Diamond
b)
Graphite
4.
Which has the formula C60?
a)
graphite
b)
diamond
c)
fullerene
d)
none of these
5.
Which is used as a cutting tool and in jewelry?
a)
graphite
b)
diamond
c)
fullerene
d)
none of these
6.
Define the term allotropes
a)
Atoms with same proton number but different number of neutrons
b)
Atoms with same proton number but different mass number
c)
Atoms in different arrangement in structure
d)
Atoms in different arrangement and different physical form
7.
Which of the following is true about C60 ?
a)
Each carbon bonded covalently to 3 other carbon atoms in a hexagonal ball like structure
b)
Each carbon bonded covelently to 4 other carbon atoms in layers
c)
a giant lattice structure
d)
pentagonal in shape
8.

Carbon is arranged in what shape to make diamond?

a)

Triangle

b)

Hexagon

c)

Octahedron

d)

Tetrahedron

9.

Which of the following statements about graphite and diamond is true?

a)

They have the same crystal structure

b)

They have the same degree of hardness

c)

They have the same electrical conductivity

d)

They can undergo the same chemical reactions

10.

From which of the following substance pencil lead is formed?

a)

Charcoal

b)

Wood

c)

Lead

d)

Graphite

11.

While cooking, if the bottom of the vessel is getting blackened on the outside, it means that:

a)

The food is not cooked completely

b)

The fuel is not burning completely

c)

The fuel is wet

d)

The fuel is burning completely

12.

Which of the following is the molecular formula of cyclobutane?

a)

C4H10

b)

C4H6

c)

C4H8

d)

C4H4

13.

The property of self-linkage among identical atoms to form long chain compounds is known

a)

Superposition

b)

Catenation

c)

Isomerisation

d)

Halogenation

14.

-Methane is a major constituent of

a)

CNG

b)

Bio-gas

c)

Natural Gas

d)

All the above

15.

Covalent compounds

a)

have high melting and boiling point

b)

are mostly soluble in water

c)

are formed between atoms of metals and non-metals

d)

are formed by the sharing of electrons in the bonding atoms.

16.

Which of the following is true for all hydrocarbon?

a)

They have carbon and hydrogen atoms only in the molecule.

b)

They have carbon, oxygen and hydrogen atoms in the molecule.

c)

They are in the same homologous series.

d)

They are saturated compounds.

17.

Which of the following is an alkane?

a)

C3H6

b)

C4H8

c)

C5H12

d)

C6H12

18.

What are the products formed when propane is burnt in excess oxygen?

a)

Carbon and hydrogen

b)

Carbon dioxide and water

c)

Carbon monoxide and water

d)

Carbon monoxide and hydrogen

19.

Which of the following compound is saturated hydrocarbon?

I CH3CH2CH2CH3

II CH3CHC(CH3)2

III CH3CH2CH(CH3)2

IV CH3CHCHCH3

a)

I and III

b)

II and IV

c)

I, II and III

d)

I, III and IV

20.

Benzene Formula is

a)

C6H12

b)

C6H8

c)

C8H6

d)

C6H6

21.

Prefix But is used when no. of carbon are

a)

1

b)

3

c)

4

d)

5

22.

The carbons circled in red...

a)

are double bonded

b)

are sharing two pairs of electrons

c)

are sharing three pairs of electrons

d)

Are sharing six electrons

23.

Which of the following is/are alkyne?

a)

C3H4

b)

C4H8

c)

C5H12

d)

C6H10

24.

Which of the following is the functional group of an alkene?

a)

C-C

b)

C=C

c)

-OH

d)

-COOH

25.

Compounds that are composed of the same number and type of atoms but have them arranged in different ways are ___________.

a)

isomers

b)

isotopes

c)

polymers

d)

alkanes

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