Exams / HS&E Operatives / Respiratory risks and silica dust / Question 6
HS&E Operatives practice question: Respiratory risks and silica dust (6 of 7) B. Occupational health A free question from our original HS&E Operatives practice exam. Try it, then open the answer to see why each option is right or wrong.
Last verified October 2026 against HSE guidance and the law ·How we write our questions
You have been wearing the same mask on a very dusty job. It is getting harder to breathe through.
What does this mean?
Choose one answer.
A A. You should take it off for a while to get some airB B. The filter is clogged, so the mask needs changingC C. The mask is working better than everD D. You should loosen the straps to breathe more easilyShow the answer and explanation Answer: B
A. Wrong: Wrong. Taking it off in the dust exposes you. Move out of the area and change the mask.B. Right: Right. HSE says the filter in a mask can quickly become clogged and stop working. Replace it.C. Wrong: Wrong. A clogged filter makes breathing harder and can let dust leak round the edge.D. Wrong: Wrong. A loose mask lets dusty air leak in round the sides.Explanation Masks only protect while they fit and the filter works. Change a clogged mask, and don't rely on a mask alone for high-risk dusty work.
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