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| Q. |
Major modification required to produce temperature of - 200?C in a vapour compression refrigeration system using Freon 12 as refrigerant, is |
| A. | Condenser capacity must be increased to handle the refrigerant |
| B. | Size of compressor required would be large to handle volumes of vapour |
| C. | Compression ratio has to be restricted till stronger body of compressor is needed |
| D. | Freon 12 cannot be used for such low temperatures |
| E. | Insulation should be capable of withstanding such low temperatures |
| Answer» D. Freon 12 cannot be used for such low temperatures | |
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