Inventions - Single MCQs (Page 3)

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Q21. The scientist credited with the discovery of noble gases is?...Q22. Electron was first identified by?...Q23. Nobel Prize was started after the name of Alfred Nobel who invented?...Q24. Who invented the telephone?...Q25. The nucleic acid in cells was discovered by?...Q26. Fax machine was invented by ?...Q27. Penicillin was invented by Fleming in the year ?...Q28. Toricelli invented ?...Q29. Lift was invented by ?...Q30. Telegrahic code was introduced by?...