know here all things of Oxygen was invented by which scientist | Carl Wilhelm discovered what ?
question : Electricity was invented or discovered by whom ?
answer : The famous scientist named Carl Wilhelm was the inventor of Oxygen in the year of 1773.
question : Carl Wilhelm invented which thing and when ?
answer : In ‘1773’ year the well known scientist whose name is ‘ Carl Wilhelm ‘ was the inventor of Oxygen.
question : when and by whom Oxygen was discovered ?
answer : Oxygen was the discovery of Carl Wilhelm which was discovered in 1773 year.
so in short we can say –
invention : Oxygen
inventor : Carl Wilhelm
year : 1773
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