MCQOPTIONS
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| 1. |
*/*_Which of the following statement is correct for ammonia as a refrigerant?? |
| A. | It is toxic to mucous membranes. |
| B. | It requires large displacement per TR compared to fluoro carbons. |
| C. | It reacts with copper and its alloys. |
| D. | All of these |
| Answer» E. | |