ഹെൻറി കാവൻഡിഷ് ഹൈഡ്രജൻ കണ്ടെത്തിയ വർഷം ഏതാണ് ?
A1744
B1746
C1766
D1768
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ഇന്ത്യൻ രസതന്ത്രത്തിന്റെ പിതാവാണ് :
Who among the following invented Dynamite?