TMA3/SED324

TMA Quiz Questions TMA: TMA3/SED324 Matric Number: SCORE=7.50 SED324 - School Science Laboratory Mr Ejembi John E. (jejembi@noun.edu.ng ) 1 Microorganisms can get into  the body through the following processes EXCEPT penetration ingestion concentration inhalation 2 Which is NOT a protective clothing  to reduce direct contact with  organisms? Rubber cloves Masks Laboratory clothes Wrist watches 3 What would you do to cultures, instruments and glasswares before  disposing them? autoclaving bury expose direct buirning 4 What type of bags can be used in  disposing off carcasses? Transparent Opaque Leather Rubber 5 The colour code of live wire is green blue brown yellow 6 What causes wrong electrical  connections considering the  wiring colour codes? Colour blindness Colour rioting Colour mixing Colour separation 7 Exposed electrical equipment  are often covered with dirty clothes wooden tapes plastic strips black tapes 8 Laboratory appliances are  protected using correct fuse tester meter hammer 9 Who cause most of the  electrical accident during  installations in schools? Teachers Students Electricians Plumbers 10 Faulty workmanship is  caused by the following  reasons EXCEPT lack of experience management of materials lack of expertise giving enough time 11 Human contact through  ingestion takes place during eating smelling excreting spilling 12 Types of hazards are classsified into 5 7 9 11 13 Colour of hazardous water reactive chemicals is orange red white blue 14 The hazardous chemicals  with yellow colour label is  likely to be oxidiser explosives corrosive flammable 15 Gases are divided into  how many sub-classes  based on their hazardous  nature? 1 3 5 7 16 Chemicals could be labelled  to identify the nature of  the substance as flammable, sweeten, aroma salty, toxic, flammable corrosive, flammable, toxic packaging, corrosive, brighten 17 Which of the following laboratory equipment is NOT A division of glass material? Glasswares Glass tubings Glass bottles Glass chairs 18 Mouth pipettes are advisable  to draw up the following reagents  EXCEPT calcium hydorxide volatile liquids sodium hydroxide hydrochloric acid 19 Which of the following is NOT  true of reagents in glass bottles? They are not to be stored inb direct in light They should be poured on the floors They must be away from radiation They should not be placed on warm floors 20 Unserviceable non-consumale items include pipettes computers ammeters calorimeters