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प्रश्न
What was the invention that removed seeds from cotton?
पर्याय
Rolling Mill
Cotton Gin
Spinning Mule
Spinning Jenny
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उत्तर
Cotton Gin
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संबंधित प्रश्न
Which of the following was used as fuel in olden days to smelt iron?
Who discovered a faster and cheaper method of producing Steel?
Who improved the Railway transport system in the country?
The first railway line in England was opened between______ and ______ in 1825.
How was the death of the miners reduced?
John Loudon Me Adam became famous for ______.
A Scottish engineer ______ converted a stationary steam engine to a rotary engine.
Answer all the questions given under the caption.
Iron and Steel
- In the olden days iron ore was smelted in brick furnaces. Charcoal was used as fuel.
- The iron produced was not sturdy and strong. It had to be smelted again.
- How was the cast iron blowing cylinder later improved?
- How did the rolling mill increases fuel efficiency in iron production?
When did modern rail transport commence?
Coal production in England increased from 4.7 million tonnes in 1750 to 250 million tonnes in 1900. Give reasons.
