MCQOPTIONS
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MCQOPTIONS
| 1. |
What is the meaning of middle digit in three digits after R type of halo-carbon refrigerants? |
| A. | Number of hydrogen atoms |
| B. | Number of fluorine atoms |
| C. | Number of hydrogen atoms + 1 |
| D. | Number of carbon atoms |
| Answer» D. Number of carbon atoms | |