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Chapter 18 Atomic and Nuclear Physics-6
1.
What is the size of a proton?
a) 10
-15
m
b) 10
-10
m
c) 10
-14
m
d) 10
-18
m
2.
What is the size of an atom?
a) 10
-15
m
b) 10
-14
m
c) 10
-10
m
d) 10
-18
m
3.
When Becquerel discovered that uranium salt crystals emit an invisible radiation that can darken a photographic plate?
a) 1968
b) 1896
c) 1869
d) 1986
4.
Who discovered in 1896 that uranium salt crystals emit an invisible radiation that can darken a photographic plate?
a) Marie Curie
b) Democritus
c) Becquerel
d) Rutherford
5.
What was the name of husband of Marie Curie?
a) Marie Pier
b) Marie Curie
c) Marie Pascal
d) Marie Pierre
6.
What was the relation of Marie Curie with Marie Pierre?
a) Marie Curie was the mother of Marie Pierre
b) Marie Curie was the wife of Marie Pierre
c) Marie Curie was the brother of Marie Pierre
d) Marie Curie was the husband of Marie Pierre
7.
Which of the following element was discovered by Marie Curie and Marie Pierre?
a) Krypton
b) Deutrium
c) Polonium
d) Barium
8.
Which of the following element was discovered by Marie Curie and Marie Pierre?
a) Krypton
b) Barium
c) Radium
d) Deutrium
9.
What is the process of emission of radiations by some elements called?
a) Nuclear transmutation
b) Nuclear radioactivity
c) Natural transmutation
d) Natural radioactivity
10.
What is the symbol for tritium?
a) 1
1
H
b) 1
3
H
c) 1
0
H
d) 1
2
H
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