A. Copper, silver and zinc
B. Copper, nickel and zinc
C. Silver, tin and zinc
D. Silver, nickel, and zinc
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A. Henry Greathead
B. Wright Brothers
C. Brequet Brothers
D. Zeiss
A. Macmillan
B. Daimler
C. Henry Ford
D. Wright Brothers
A. George Eastman
B. William Friese-Greene
C. Karl Graebe
D. Unknown Optician
A. Sir Ernest
B. Gail Borden
C. Frank Whittle
D. William Hurst
A. Max Plank
B. J.C. Perrier
C. Wilhelm K. Roentgen
D. Samuel Colt
A. Swinston
B. Barid
C. Walt
D. None of the above
A. Birla Auditorium Jaipur, India
B. Peace, Palace Phnom Penh Cambodia
C. Bangladesh
D. Cuba Havanah
A. Italy
B. Germany
C. Brazil
D. Czech Republic
A. South Sudan
B. Kosovo
C. East Timor
D. Holy See
