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प्रश्न
Answer the following briefly in not more than 30 words.
Name the important raw materials used in the manufacturing of cement?
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उत्तर
The important raw materials used in the manufacturing of cement are: limestone, silica, alumina and gypsum. Apart from these, coal, electric power and rail transportation are also needed.
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संबंधित प्रश्न
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Read the data in the table given below and answer the questions that follow:
| Total production of finished steel in India | |
| Year | Production (in million tonnes) |
| 2015- 2016 | 106.60 |
| 2016-2017 | 120.14 |
| 2017- 2018 | 126.85 |
| 2018-2019 | 101.29 |
| 2019-2020 | 102.62 |
Compare the 2015-2016 and 2019-2020 data and give any one reason for the reduction of production of steel in 2019-2020.
Read the data in the table given below and answer the questions that follow:
| Total production of finished steel in India | |
| Year | Production (in million tonnes) |
| 2015- 2016 | 106.60 |
| 2016-2017 | 120.14 |
| 2017- 2018 | 126.85 |
| 2018-2019 | 101.29 |
| 2019-2020 | 102.62 |
Why is production and consumption of steel considered as an index of a country’s development?
Why is Aluminum smelting the second most important metallurgical industry in India? Explain.
