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Chemistry 9 Chapter 2 Structure of Atom -1
1.
When did Rutherford performed an experiment to know about the structure of atom?
a) 1900
b) 1920
c) 1913
d) 1911
2.
Rutherford bombarded the gold foil with?
a) gamma particles
b) beta particles
c) alpha particles
d) none of these
3.
Rutherford obtained the alpha particles from the disintegration of?
a) tin
b) paladium
c) polonium
d) gold
4.
Alpha particles are ___ nuclie that are doubly positively charged?
a) oxygen
b) carbon
c) helium
d) hydrogen
5.
Most of the alpha particles bombarded on gold foil?
a) passed straight through it
b) were deflected through an angle
c) were slightly reflected
d) none of these
6.
Who proposed the planetary model for an atom?
a) Bohr
b) Plato
c) Aristotle
d) Rutherford
7.
According to Rutherford, an atom is a?
a) negatively charged particle
b) none of these
c) possitively charged particle
d) neutral particle
8.
According to Rutherford, the mass of an atom is present in the?
a) outside the atom
b) orbits
c) none of these
d) nucleus
9.
The nucleus of an atom is?
a) positively charged
b) all of these
c) neutral
d) negatively charged
10.
Most of the space occupied by an atom must be empty. This is the conclusion of?
a) Empedocles
b) Bohr
c) Aristotle
d) Rutherford
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