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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 Submitted by :- Jamil Ahmed
Who discovered radioactivity?
A. Marie Curie B. Albert Einstein C. Max Planck D. Niels Bohr Submitted by :- Jamil Ahmed
Who discovered the Proton?
A. Ernest Rutherford B. J. Thomson C. Marie Curie D. Niels Bohr Submitted by :- Jamil Ahmed
Who discovered the electron?
A. Ernest Rutherford B. J.J. Thomson C. Marie Curie D. Niels Bohr Submitted by :- Jamil Ahmed
Which one of the following results in the discovery of proton.
A. Cathode rays B. X-rays C. Canal rays D. Alpha rays Submitted by :- Jamil Ahmed
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