MCQOPTIONS
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| 1. |
_Coke oven gas burns with an yellowish flame, because of the presence of$? |
| A. | CO‚ÇÇ |
| B. | CH‚ÇÑ |
| C. | H‚ÇÇ |
| D. | NH‚ÇÉ |
| Answer» C. H‚Äö√á√á | |