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सामान्य ज्ञान
: विज्ञान
हवाई जहाज का विकास कब हुआ था? , When were airplanes developed?
हवाई जहाज का विकास कब हुआ था?
When were airplanes developed?
A. 1980
B. 1900
C. 1970
D. 1950
Correct Answer :
B. 1900
Explanation
Airplanes were developed in the early year of 1900.
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