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Inventions and Discoveries

19. 

Penicillin was discovered by

A. William Harvey B. Alexander Fleming C. Edward jenner D. J.c .Bose

Answer : B. Alexander Fleming

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20. 

The carbon filament is invented by

A. Volt B. Ampere C. Newton D. Edison

Answer : D. Edison

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21. 

Who is the father of discoveries

A. Edison B. Pascal C. Einstein D. Archimedes

Answer : D. Archimedes

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22. 

Recording of sound on tapes was first invented by

A. Fleming B. Ampere C. Poulsen D. Becquerrel

Answer : C. Poulsen

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23. 

Electrons were discovered by

A. Newton B. Chadwick C. Roentgen D. J.J.Thomson

Answer : D. J.J.Thomson

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24. 

who discovered the principle of lever?

A. Einstein B. Archimedes C. Newton D. Roentgen

Answer : B. Archimedes

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