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Worksheet: Chemical Disposal


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 chemical classes is waste-compatible with mineral acids such as hydrochloric acid?

  • ASulfides
  • BCyanides
  • CAlkalis
  • DSulfates
  • EOrganic acids


Which of the following is miscible with water?

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


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 materials would be disposed of as halogenated organic waste?

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


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

  • AAcetone
  • BDiethyl ether
  • CEthanol
  • DToluene
  • EAcetonitrile


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.


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

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