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

નીચેના પૈકી કોણે ડીઝલ એન્જિનની શોધ કરી હતી?

1
રુડોલ્ફ ડીઝલ
2
ઓટિસ
3
લેરી પેજ
4
રાને લેનેક
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