Teaching BPSC बिहार मध्य विद्यालय (6 to 8) शिक्षक भर्ती 4.0 Mock Test General Knowledge Science Technology and Inventions
Who among the following invented steam engine?
1
Enrico Fermi
2
James Boyle
3
James Watt
4
More than one of the above
5
None of the above