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Who invented Portland cement and in which year?(a) William Aspdin, 1824(b) William Aspdin, 1840s(c) Joseph Aspdin, 1840s(d) Joseph Aspdin, 1824 |
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Answer» Correct answer is (b) William Aspdin, 1840s For explanation I would say: Joseph Aspdin patented Portland cement in 1824. William Aspdin, his son is regarded as the inventor of modern Portland cement due to his developments in 1840s. |
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