engineering recuitment ISRO Scientist Mechanical Mock Test Refrigeration and Air Conditioning Refrigerants
Which of the following are highly explosive and flammable in a refrigeration system?
1. Methane
2. Butane
3. R134a
Select the correct answer using the code given below:
1
2 and 3 only
2
1 and 2 only
3
1 and 3 only
4
1, 2 and 3