Which subatomic particle determines the chemical properties of an element?
A. Proton
B. Electron
C. Neutron
D. Isotope
Submitted by :- Jamil Ahmed
What is the charge of a neutron?
A. Positive
B. Negative
C. Neutral
D. It varies
Submitted by :- Jamil Ahmed
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
Submitted by :- Jamil Ahmed
The radiations with highest speed are _______.
A. Alpha radiations
B. Gamma radiations
C. Beta radiations
D. None of the above
Submitted by :- Jamil Ahmed
Petra means ______ ?
A. Petrol
B. Sediment
C. Rock
D. Fuel
Submitted by :- Jamil Ahmed