Which of the following were unknown to man in the Stone Age ?
A
Welding
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B
Farming
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C
Cooking with fire
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D
Painting
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Solution
The correct option is A Welding Farming and cooking using fire were common during the Stone Age. Paintings were used to convey ideas which is evident from the cave paintings. Welding and other processes were unknown to man as only copper and bronze were common at that time.