What is the charge of a neutron?
A. Positive
B. Negative
C. Neutral
D. It varies
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Who proposed the concept of isotopes?
A. Dmitri Mendeleev
B. John Dalton
C. J. Thomson
D. Frederick Soddy
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Who discovered radioactivity?
A. Marie Curie
B. Albert Einstein
C. Max Planck
D. Niels Bohr
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Who discovered the Proton?
A. Ernest Rutherford
B. J. Thomson
C. Marie Curie
D. Niels Bohr
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Who discovered the electron?
A. Ernest Rutherford
B. J.J. Thomson
C. Marie Curie
D. Niels Bohr
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Which one of the following results in the discovery of proton.
The radiations with negative charge are________.
A. Alpha radiations
B. Gamma radiations
C. Beta radiations
D. positron
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The radiations with highest speed are _______.
A. Alpha radiations
B. Gamma radiations
C. Beta radiations
D. None of the above
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Petra means ______ ?
A. Petrol
B. Sediment
C. Rock
D. Fuel
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When the radiation of light is passed through a prism, it undergoes __________?
A. reflection
B. interference
C. diffraction
D. refraction
Submitted by :- Jamil Ahmed