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Lesson: Chemical Disposal

Worksheet • 8 Questions


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

  • ACopper(II) chloride
  • BSodium hydroxide
  • CNitric acid
  • DCalcium chloride
  • EEthanol


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

  • ASulfates
  • BOrganic acids
  • CCyanides
  • DAlkalis
  • ESulfides


Which of the following is miscible with water?

  • AIsopropanol
  • B1-Hexanol
  • CMineral oil
  • DDichloromethane
  • ECyclohexane


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

  • AToo little water has been added.
  • BThe separation is slow.
  • CThe temperature is too high.
  • DThe ionic strength is too low.
  • ESurfactant is present.


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

  • AChloroform
  • BHydrochloric acid
  • CTin(IV) chloride
  • DAcetyl chloride
  • EChlorine


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

  • AToluene
  • BAcetonitrile
  • CDiethyl ether
  • DEthanol
  • EAcetone


Which of the following statements is false?

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


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

  • ANitric acid
  • BBrine
  • CHydrochloric acid
  • DChloroform
  • EDimethyl sulfoxide