Consider the following statements : 1. Practically all common refrigerants have approximately the same COP and power requirement. 2. Ammonia mixes freely with lubricating oil and this helps lubrication of compressors.3. Dielectric strength of refrigerants is an important property in hermetrically sealed compressor units. 4. Leakage of ammonia can be detected by halide torch method. Of these statements : (a) 1, 2 and 4 are correct (b) 2 and 4 are correct (c) 1, 2 and 4 are correct (d) 1 and 3 are correct.

Consider the following statements : 1. Practically all common refrige

1.	Consider the following statements : 1. Practically all common refrigerants have approximately the same COP and power requirement. 2. Ammonia mixes freely with lubricating oil and this helps lubrication of compressors.3. Dielectric strength of refrigerants is an important property in hermetrically sealed compressor units. 4. Leakage of ammonia can be detected by halide torch method. Of these statements : (a) 1, 2 and 4 are correct (b) 2 and 4 are correct (c) 1, 2 and 4 are correct (d) 1 and 3 are correct.
Answer» (d) 1 and 3 are correct.

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