Which is not a reason why compressed air is preferred over vacuuming for cleaning dust from a circuit board? Choose one:
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Compressed air can generally provide greater cleaning power
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Compressed air is less likely to cause ESD damage
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Compressed air is less likely to spread dust
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None of the above
To answer this question, the user needs to know the advantages of using compressed air over vacuuming for cleaning dust from a circuit board.
Option A: This option is a valid reason why compressed air is preferred over vacuuming. Compressed air is generally more powerful and can remove more dust and debris than a vacuum.
Option B: This option is also a valid reason why compressed air is preferred over vacuuming. Vacuuming can generate static electricity, which can damage sensitive electronic components. Compressed air is less likely to cause ESD damage.
Option C: This option is incorrect. Vacuuming is more likely to spread dust around the circuit board, while compressed air blows the dust away from the board.
Option D: This option is incorrect. Options A and B are both valid reasons why compressed air is preferred over vacuuming.
Therefore, the answer is: C
Compressed air actually tends to spread dust around (blowing it into the air and onto other components) rather than containing it, whereas a vacuum captures dust into a bag/canister. So 'compressed air is less likely to spread dust' is false, making it correctly identified as NOT a valid reason to prefer air over vacuuming. The genuine reasons air is often preferred are its stronger, more targeted cleaning power in tight spaces and its lower risk of static-related ESD damage compared to some vacuums, which is why those two remain valid (not selected) reasons.