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| Q. |
Coal gas is attained from to a process carried out at |
| A. | 300oc |
| B. | 700oc |
| C. | 900oc |
| D. | 1300oc |
| Answer» D. 1300oc | |
| Explanation: coal gas is produced by heating the coal at 1300oc when there is a lack of air. it is usually done in coke ovens or gas making retorts. this gas is colorless and is lighter than air. | |
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