Inventions - Single MCQs (Page 1)

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Q1. टेलीफोन का आविष्कार किसने किया था?...Q2. Google Doodle honoured Otto Wichterle on his 108th birthday on October 27, 2021....Q3. Thomas Clifford Allbutt is associated with the invention of...Q4. Antonio Meucci is associated with the invention of...Q5. Who Invented the 3-D printer?...Q6. Who Invented Induction Coil?...Q7. Who invented first working laser?...Q8. Transistor was invented by?...Q9. Dendrology is associated with the study of?...Q10. The oral polio vaccine was discovered by?...