question_answer

Which of the following statements are true for Ammonia as a refrigerant?

1. It has higher compressor discharge temperature compared to fluororarbons.

2. It is toxic to mucous membranes.

3. It requires larger displacement per TR compared to fluorocarbons.

4. It reacts with copper and its alloys.

Select the correct answer using the codes given below:

A) 1 and 2            

B) 1, 2 and 3

C) 1, 2 and 4                     

D) 2, 3 and 4