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| Q. |
Lead pencil contains – |
| A. | lead |
| B. | ferrous sulphide |
| C. | lead sulphide |
| D. | graphite |
| Answer» D. graphite | |
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Explanation: Most pencil cores are made of graphite mixed with a clay binder, leaving grey or black marks that can be easily erased. Graphite pencils are used for both writing and drawing, and the result is durable: although writing can usually be removed with an eraser, it is resistant to moisture, most chemicals, ultraviolet radiation and natural aging. |
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