HomeGeneral KnowledgeWhich of the following inventions were done by Thomas Alva Edison? 1019. Which of the following inventions were done by Thomas Alva Edison?By Admin / September 19, 2025 A. Incandescent lamp B. Phonograph C (Gramophone) and microphone C. Carbon telephone transmitters D. All of the above ✅ The correct answer is option D.
1. In which field is the Dhanwantri Award given? Leave a Comment / Awards and Honours MCQs, General Knowledge / By Admin
2. Which of the following awards was conferred on Mrs. Kiran Bedi? Leave a Comment / Awards and Honours MCQs, General Knowledge / By Admin