Q. Who invented 'safety pin'?

(A) William Hunt (U.S.)
(B) Charles Fredrick Wiesenthal (US)
(C) J.C. Perier (France)
(D) Sir Richard Arkwright (England)

✅ Correct Answer: (A) William Hunt (U.S.)

Published by Jatin Dubey ⭐ 3.78K Points at 18-Dec-2022 11:23 am in Science

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