1. 5.19 What does H2S stand for?1) a. Water
2) b. Hydrogen
3) c. Hydrogen sulfide
4) d. Dihydrosodium
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2. 5.61 When working with benzene, in addition to a respirator, hard hat and safety footwear, what other personal protective equipment should be worn?1) a. Safety glasses and leather gloves
2) b. Leather gloves, long-sleeve coveralls and goggles
3) c. Rubber gloves, chemical protective clothing, goggles and face shield
4) d. Rubber gloves, goggles, and coveralls
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3. 5.69 Hydrogen sulfide may be present in all petroleum products, crude oil and many types of petrochemicals.1) a. True
2) b. False
3)
4)
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4. 5.44 Before entering a confined space, which tests are required?1) a. Oxygen content
2) b. Lower explosive limit
3) c. Toxic vapour testing
4) d. Answers a., b. and c. are all correct
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5. 5.42 Products have defined limits of combustion. What are these?1) a. The Permissible Exposure Limit and the Threshold Limit Value
2) b. The Lower Explosive Limit, Upper Explosive Limit and the Flash Point
3) c. The Flash Point and the Threshold Limit Value
4) d. The Permissible Exposure Limit and the Lower Explosive Limit
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