Equipment III Correct! Incorrect! 1. Single pass heat exchangers are more efficient than multi-pass heat exchangers. True False View the lesson section again Correct! Incorrect! 2. Fine dust dispersions can pose an explosion hazard when exposed to an ignition source and oxygen. True False View the lesson section again Correct! Incorrect! 3. Indirect drying occurs when heat is transferred through contact with the drying medium. True False View the lesson section again