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Boopathisankar Muthuraj
's Polls
Inventions in the world
Who invented the telephone?
A. J.L Baird
0 votes (0%)
A. J.L Baird
B. Alexander Graham Bell
5 votes (100%)
B. Alexander Graham Bell
C. Marconi
0 votes (0%)
C. Marconi
D. James Dewar
0 votes (0%)
D. James Dewar
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