Radioactivity was discovered by (1) Rutherford (2) Henri Becquerel (3) Roentgen (4) Einstein Answer : Henri Becquerel...
Electron was discovered by (1) Ernest Rutherford (2) Max Planck (3) Joseph Thomson (4) Albert Einstein Answer : Joseph Thomson...
X–rays were discovered by (1) Becquerel (2)Roentgen (3) Marie Curie (4)Van Lue Answer : Roentgen...
Which scientist discovered the radioactive element Radium ? (1) Marie Curie (2) Isaac Newton (3) Albert Einstein (4) Benjamin Franklin Answer : Marie Curie ...
Which of the following statement is false? (1) Polystyrene was discovered in 1839 by Edward Simon (2) It is used for making plastics and CD cases (3) It is not biodegradable (4) None of these Answer : None of these...
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