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1 . Oxygen was independently discovered by
A. William Ramsay
B. Joseph Priestley
C. Rutherford
D. Neils Bohr

2 . Who invented Rabies Vaccine ?
A. Rutherford
B. Robert Koch
C. Ferdinand Cohn D. Louis Pasteur

3 . In which year was MIDI introduced?
A. 1987
B. 1983
C. 1973
D. 1977

4 . Electron was invented by
A. J.J Thomson B. Ernest Rutherford
C. James Chadwick D. Werner Heisenberg

5 . Who invented Dynamite?
A. Thomas Alva Edison
B. Benjamin Franklin
C. Sir Alexander Graham Bell
D.  Alfred B. Nobel




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