Inventions MCQs

✅ The correct answer is option D.
William Gray, inventor of the pay telephone, also invented the inflatable chest protector worn by baseball umpires and catchers.

✅ The correct answer is option C.

✅ The correct answer is option C.
Banneker was a member of the planning committee that designed Washington, DC along with Pierre L’Enfant. When L’Enfant was fired Banneker recreated the plans from memory.

✅ The correct answer is option D.
No one knows for sure when the first chocolate bar appeared or even who made it, but an important event occurred in 1828. The Van Houten press was invented, which extracted cocoa butter from the bean – the same press that brought the Cadbury Brothers success with Cocoa Essence.

✅ The correct answer is option B.
On May 24, 1844, Samuel Morse send his famous message, “What hath God wrought?”

✅ The correct answer is option A.
Leslie R. Groves, however, was the military head of the project and the overall supremo, while Robert Oppenheimer was the scientific director. The world’s first atomic bomb was exploded in the New Mexico desert on July 16, 1945.

✅ The correct answer is option B.

✅ The correct answer is option D.
The card was invented by Frank McNamara and Ralph Schneider.

✅ The correct answer is option C.
Invented in 1856.

✅ The correct answer is option C.
His middle name, Lionel, is the source of the Lionel Train brand name.