1. dimethylmercury is a man - made chemical which, if absorbed through the skin, does not show symptoms of…

1. dimethylmercury is a man - made chemical which, if absorbed through the skin, does not show symptoms of poisoning until months later. by then, it is too late to treat and will likely result in death. which of the following whmis symbols should be found on a container of dimethylmercury?\na) skull and crossbones symbol\nb) flame symbol\nc) exclamation mark symbol\nd) biohazard symbol\n2. iron, gold, and oxygen are all good examples of\na) compounds\nb) mixtures\nc) elements\nd) all of the above\n3. what is the key function of the swim bladder for a fish?\na) to regulate food intake\nb) to regulate buoyancy\nc) to regulate urination\nd) to regulate circulation\n4. the purpose of valves in devices such as bicycle pumps and water taps is to\na) create the force to cause the fluid to flow\nb) regulate the flow of the fluids\nc) stop fluids from flowing\nd) maintain a constant fluid flow\n5. the cleaning of ancient paintings requires an extensive knowledge of

1. dimethylmercury is a man - made chemical which, if absorbed through the skin, does not show symptoms of poisoning until months later. by then, it is too late to treat and will likely result in death. which of the following whmis symbols should be found on a container of dimethylmercury?\na) skull and crossbones symbol\nb) flame symbol\nc) exclamation mark symbol\nd) biohazard symbol\n2. iron, gold, and oxygen are all good examples of\na) compounds\nb) mixtures\nc) elements\nd) all of the above\n3. what is the key function of the swim bladder for a fish?\na) to regulate food intake\nb) to regulate buoyancy\nc) to regulate urination\nd) to regulate circulation\n4. the purpose of valves in devices such as bicycle pumps and water taps is to\na) create the force to cause the fluid to flow\nb) regulate the flow of the fluids\nc) stop fluids from flowing\nd) maintain a constant fluid flow\n5. the cleaning of ancient paintings requires an extensive knowledge of

Answer

Brief Explanations:

  1. Dimethylmercury is highly toxic and can cause death, so the skull - and - crossbones symbol (A) is appropriate for it as it represents a toxic and potentially lethal substance.
  2. Iron, gold, and oxygen are pure substances made of only one type of atom, which are elements (C). Compounds are made of two or more different elements chemically combined, and mixtures are physical combinations of substances.
  3. The swim bladder in a fish is mainly used to regulate buoyancy (B), allowing the fish to move up and down in the water column.
  4. Valves in devices like bicycle pumps and water taps are used to regulate the flow of fluids (B). They can open and close to control the direction and amount of fluid passing through.

Answer:

  1. A.
  2. C.
  3. B.
  4. B.