defence exam Navy SSR (Medical) Mock Test Series 2025 General Science Biology Invention and Discoveries

"ટેલિફોન" ની શોધ કોણે કરી?

1
થોમસ આલ્વા એડિસન
2
એલેક્ઝાન્ડર વિલિયમ
3
એકરમેન
4
ગ્રેહામ બેલ
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