railway RRB NTPC Mock Test Series 2024-25 (CBT 1 + CBT 2) General Knowledge Science Technology and Inventions

କିଏ "ଡାଇନାମାଇଟ୍" ଉଦ୍ଭାବନ କରିଥିଲେ ?

1
ଥୋମାସ୍ ଆଲଭା ଏଡିସନ 
2
ବେଞ୍ଜାମିନ୍ ଫ୍ରାଙ୍କଲିନ୍ 
3
ରୁଡ଼ଲ୍ଫ ଡିଜେଲ୍
4
ଆଲଫ୍ରେଡ୍ ନୋବେଲ୍
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