Chemistry 9 Chapter 5 - Physical States of Matter -8

Chemistry 9 Chapter 5 - Physical States of Matter -8

1. The different forms of an element in the same physical state and
phase are called as?

a) Metals
b) Isotopes
c) Allotropes
d) Isomers

2. In diamond, each carbon atom is bonded to how many other carbons?

a) 5
b) 3
c) 2
d) 4

3. In graphite, the carbon atoms are arranged in layers of ___ arrays?

a) Hexagonal

b) Trigonal

c) Pentagonal
d) Diagonal

4. How many carbon atoms form a hollow sphere in buckeyball?

a) 70
b) 50
c) 40
d) 60

5. Which one of the following is a liquid?

a) Diamond
b) Buckeyball
c) Graphite

d) None of these

6. The white and red phosphorus molecules are the allotropes of?

a) Sulphur

b) Carbon
c) Magnesium
d) Phosphorus

7. Which one of the following is the amorphous form?

a) Plastic sulphur

b) None
c) Rhombic sulphur
d) Monoclinic sulphur

8. Which one of the following is incorrect about gases?

a) No definite shape

b) Strong attractive forces

c) No definite volume

d) No attractive forces

9. White phosphorus consists of?

a) Diatomic molecules
b) Hexaatomic molecules
c) Pentaatomic molecules
d) Tetraatomic molecules

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