Worksheet: Chemical Disposal

In this worksheet, we will practice categorizing waste, identifying hazardous and incompatible waste, and selecting safe waste disposal methods.


Which of the following could not be disposed of as aqueous organic waste?

  • AAcetone
  • BDiethyl ether
  • CEthanol
  • DToluene
  • EAcetonitrile


Which of the following materials would be disposed of as halogenated organic waste?

  • AChlorine
  • BTin(IV) chloride
  • CAcetyl chloride
  • DChloroform
  • EHydrochloric acid


After washing a reaction mixture, separation into aqueous and organic layers is not observed. Which of the following is not a possible cause?

  • ASurfactant is present.
  • BThe temperature is too high.
  • CThe ionic strength is too low.
  • DToo little water has been added.
  • EThe separation is slow.


Which of the following chemical classes is waste-compatible with mineral acids such as hydrochloric acid?

  • ASulfides
  • BCyanides
  • CAlkalis
  • DSulfates
  • EOrganic acids


Which of the following would be most hazardous if added to non-halogenated organic solvent waste?

  • ADimethyl sulfoxide
  • BHydrochloric acid
  • CChloroform
  • DNitric acid
  • EBrine


Which of the following cannot be diluted and disposed of as non-hazardous aqueous waste?

  • AEthanol
  • BNitric acid
  • CCalcium chloride
  • DCopper(II) chloride
  • ESodium hydroxide


Which of the following is miscible with water?

  • ACyclohexane
  • BMineral oil
  • CDichloromethane
  • DIsopropanol
  • E1-Hexanol


Which of the following statements is false?

  • AAcids and bases should not be placed in steel containers.
  • BWaste bottles should be stored in vented cupboards.
  • CWaste bottles should be filled via a funnel.
  • DWaste bottles should be tightly sealed.
  • ESome aqueous chemical waste can be disposed of in the sink.

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