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30 multiple-choice questions and 12 flashcards on Personal Protective Equipment, about 10% of the OSHA 30 bank. Every one carries a written rationale.
Personal Protective Equipment is one of 10 chapters in CoStudy's OSHA 30 (Construction) bank, and it holds 30 of the bank's 300 multiple-choice questions — roughly 10% of the total. That proportion is not arbitrary: chapters follow the certifying body's published exam outline, and the number of questions in each is set by that domain's published weight, so the share of your practice time this chapter takes matches the share of the real exam it accounts for.
Studying by chapter is worth doing once you have a diagnostic score. A single overall percentage tells you whether you are close; it does not tell you which domain is dragging. Working a weak chapter in isolation, and re-testing it in isolation, is the fastest way to move a score that has stalled — and it is why the mock exams in CoStudy report by domain rather than as one number.
10 questions drawn from this chapter, with the full rationale shown — the controlling principle behind the right answer, and why each wrong option tempts and fails.
Under OSHA, PPE for required tasks is:
Answer: D — Provided by the employer at no cost (with limited exceptions like ordinary work boots)
Employer-vs-employee responsibility. D is correct.
Electricians will work near exposed energized conductors overhead. Which head protection is appropriate?
Answer: A — A helmet rated for the voltage class, worn undamaged and unmodified
A) Correct — head protection for electrical exposure must be rated for the voltage class involved and must not be altered or drilled. B) Not all hard hats carry a high-voltage electrical rating. C) Bump caps do not meet impact or electrical requirements. D) Vented shells are not appropriate where electrical protection is needed.
A face shield should be worn:
Answer: D — Over primary eye protection (safety glasses or goggles)
Face shields are secondary protection.
A hard hat marked Class E provides:
Answer: C — High-voltage electrical protection (up to 20,000 V)
Common misconception. Class E (Electrical) = up to 20,000 V; Class G = General/low-voltage; Class C = Conductive/none.
Respirators are governed by:
Answer: A — 29 CFR 1910.134
A correct; B is hearing; C is falls; D is recordkeeping.
Before being issued a tight-fitting respirator, a worker must:
Answer: D — Pass a medical evaluation and fit test
Medical evaluation + fit test mandatory.
Eye-wash stations are required to be located:
Answer: A — Within 10 seconds (about 55 ft) of an eye hazard
ANSI Z358.1: within 10 seconds.
An SCBA (Self-Contained Breathing Apparatus) is preferred over an APR (Air-Purifying Respirator) when:
Answer: A — The atmosphere is IDLH or oxygen-deficient
IDLH / oxygen-deficient atmospheres require SCBA or SAR.
Workers will handle sheet metal edges and also mix an epoxy grout later in the shift. Which glove approach is correct?
Answer: C — Cut-resistant gloves for the metal, chemical-resistant for the epoxy
C) Correct — hand protection must be matched to each specific hazard, and cut resistance and chemical permeation resistance are different performance properties. A) Leather absorbs chemicals and is a poor barrier to epoxy resins. B) Cotton offers neither cut nor chemical protection. D) Thin exam gloves give no cut resistance and may not resist the resin system.
A worker's employer-required cut-resistant gloves wear out mid-project. Who is generally responsible for the replacement cost?
Answer: D — The employer, who must provide required PPE at no cost with narrow exceptions
D) Correct — the employer pays for required PPE, with a small set of exceptions largely involving everyday footwear and prescription eyewear inserts that workers take with them. A) Consumability does not shift the cost to the worker. B) Cost-sharing arrangements for required PPE are not permitted. C) Insurance carriers do not procure routine PPE.
3 cards from the 12 in this chapter.
Employer's responsibility for PPE?
Provided at no cost (with limited exceptions like ordinary safety-toe boots). Selected appropriate to hazard. Trained users.
What is OSHA's permissible exposure limit for noise, and at what level must a hearing conservation program begin?
90 dBA as an 8-hour time-weighted average, with a 5 dB exchange rate. A hearing conservation program is required at the 85 dBA 8-hour TWA action level.
Respirator program?
Required when respirators used. Medical evaluation, fit test (qualitative or quantitative), training. APR (air-purifying) vs. PAPR vs. SCBA.
These are a sample. The full Personal Protective Equipment chapter runs 42 items with per-chapter progress tracking, on the web and in the iOS app.