Which of the following statement about SF6 gas is incorrect?
A. it is a non-toxic gas
B. it is non-inflammable
C. it has density 5 times that of air at 20oC
D. it has dark yellow color.
Answer:D
Which of the following statement about SF6 gas is incorrect?
A. it is a non-toxic gas B. it is non-inflammable C. it has density 5 times that of air at 20oC D. it has dark yellow color.