Hydrocarbons in the air can be analyzed by mixing an air sample ...

[tfester]

Hydrocarbons in the air can be analyzed by mixing an air sample with a fuel and then burning the mixture. When the mixture burns, _____.
 
  A) heat is produced in proportion to the hydrocarbons present
  B) ions are produced according to the amount of hydrocarbons present
  C) the flame produces different colors based on the hydrocarbons present
  D) the orange flame turns blue if hydrocarbons are present

Question 2

A wearable personnel protection indicator signifies the presence of hydrogen sulfide by _____.
 
  A) changing color B) vibrating
  C) reducing in size D) emitting a bad smell

[Smiles0805]

Answer to Question 1

B

Answer to Question 2

A

[tfester]

Thanks for the timely response, appreciate it

[cdmart10]

Gracias!