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| Q. |
The highest grade and best quality coal is – |
| A. | Lignite |
| B. | Peat |
| C. | Bituminous |
| D. | Anthracite |
| Answer» D. Anthracite | |
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Explanation: Anthracite is usually considered to be the highest grade of coal and is actually considered to be metamorphic. Compared to other coals it is much harder, has a glassy luster, and is denser and blacker with few impurities. It is largely used for heating domestically as it burns with little smoke. |
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