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Chemistry 9 Chapter 2 Structure of Atom -9
1.
Which one of the following isotopes is used to trace the path of carbon in photosynthesis?
a) Na-24
b) cobalt-60
c) C-14
d) I-131
2.
Which one of the following isotopes is used to image the brain?
a) I-131
b) Na-24
c) I-123
d) C-14
3.
Which one of the following isotopes is used in the treatment of cancer?
a) cobalt-60
b) Na-24
c) I-123
d) C-14
4.
Which one of the following isotopes is used to determine the molecular structure of thiosulphate?
a) S-35
b) Na-24
c) C-14
d) Cobalt-60
5.
Which one of the following isotopes is used to estimate the age of carbon containing substances?
a) C-12
b) none of these
c) C-13
d) C-14
6.
To estimate the age of carbon containing substances by using carbon isotope is known as?
a) carbonization
b) carbon dating
c) electronic configuration
d) none of these
7.
Electrons in an atom revolves around the nucleus in the?
a) all of these
b) orbits
c) energy levels
d) shells
8.
The shell of an atom is described by the value?
a) p
b) m
c) n
d) o
9.
When n=1 , it would be a?
a) M shell
b) K shell
c) N shell
d) L shell
10.
The n value for L shell is?
a) 1
b) 3
c) 4
d) 2
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