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Chemistry 9 Chapter 2 Structure of Atom -7
1.
The natural abundance of chlorine-35 is?
a) 75%
b) 100%
c) 0 %
d) 35%
2.
How many neutrons are present in chlorine-37?
a) 20
b) 18
c) 17
d) 19
3.
The natural abundance of chlorine-37 is?
a) 25%
b) 75%
c) 35%
d) 100%
4.
How many protons are present in the isotopes of chlorine?
a) 19
b) 18
c) 20
d) 17
5.
Which one of the following is incorrect about chlorine?
a) water insoluble
b) pungent smell
c) fairly soluble in water
d) greyish yellow
6.
How many isotopes the uranium have?
a) 3
b) 4
c) 2
d) 5
7.
Which one of the following is the mass number of uranium isotopes?
a) 234
b) 235
c) 238
d) all of these
8.
The atomic number of uranium is?
a) 234
b) 238
c) 235
d) 92
9.
Which one of the following is used in the nuclear reactors and atomic bombs?
a) U-235
b) all of these
c) U-238
d) U-234
10.
Which one of the following is Not the isotope of uranium?
a) U-230
b) U-238
c) U-234
d) U-235
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