Important Inventions and Discoveries in World – 14

Important Inventions and Discoveries in World » Exercise – 1

14. When was the toothbrush invented?

(a) 1770
(b) 1765
(c) 1790
(d) 1742

Answer
Answer : (a)
Explanation
Explanation : The first toothbrush was made out of a bone and small brush, by jail prisoner William Addis of England.
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