How are the hydrocarbons in the samples removed in magnetic wind instruments?
A. By using a cold trap
B. By using a filter
C. By using a semipermeable membrane
D. By using magnetic effect
Answer:A
How are the hydrocarbons in the samples removed in magnetic wind instruments?
A. By using a cold trap B. By using a filter C. By using a semipermeable membrane D. By using magnetic effect
Explanation: The hydrocarbons in the samples are removed in magnetic wind instruments by using a cold trap. It is removed to avoid combustion.