Which of the following inventions were done by Thomas Alva Edison?
A. Incandescent lamp
B. Phonograph C (Gramophone) and microphone
C. Carbon telephone transmitters
D. All of the above
Answer: Option D
Solution(By Examveda Team)
Incandescent lamp, Phonograph C (Gramophone) and microphone and Carbon telephone transmitters inventions were done by Thomas Alva Edison. Thomas Alva Edison was an American inventor and businessman who has been described as America's greatest inventor. He developed many devices in fields such as electric power generation, mass communication, sound recording, and motion pictures.This Question Belongs to General Knowledge >> Basic General Knowledge
Who amongst the following had called Rabindranath Tagore as THE GREAT SENTINEL?
A. Abul Kalam Azad
B. Mahatma Gandhi
C. Dr. Rajendra Prasad
D. Subhash Chandra Bose
Grand Central Terminal, Park Avenue, New York is the world's
A. highest railway station
B. longest railway station
C. largest railway station
D. None of the above
Entomology is the science that studies
A. The origin and history of technical and scientific terms
B. Behavior of human beings
C. Insects
D. The formation of rocks
E. None of these
Eritrea, which became the 182nd member of the UN in 1993, is in the continent of
A. Africa
B. Australia
C. Europe
D. Asia
E. None of these
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