TMA1/SED324

TMA Quiz Questions TMA: TMA1/SED324 Matric Number:  SCORE=9.50 SED324 - School Science Laboratory Mr Ejembi John E. (jejembi@noun.edu.ng ) 1 Sectioning razors microtone and blades are jointly called cuts sharps tools instruments 2 A delibrate puncture of the skin to take blood is called blood transfusion smapling donation carrier 3 Electricity and electrical appliances cause which class of fire? E D B A 4 The sources of class B fire are paper and methane rubber and sodium petrol and alcohol hydrogen and electricity 5 Which of the following materials CANNOT produce in the laoratory? peroxides chlorates nitrates carbonates 6 Fire triangle contains oxygen, water and fire fuel, oxygen and heat heat, water and fire fuel, nitrates and air 7 The oxygen supply for a fire generally comes from about _____ by volume of air. 10% 15% 20% 30% 8 Peroxides and dichromates are examples of oxidising agents dehydarting agents reducing agents drying agents 9 Which of the following is NOT necessary for any fire to take place? Fuel Heat Oxygen Water 10 The commonest source of fire in the laboratory is compressed and liquiefied gases naked light burning of bushes oil installation 11 The main source of oxygen is rain air fire oxide 12 Vapourising liquids could be used to extinguish all these classes of fire EXCEPT A B C E 13 Whereever fire breaks out in the laboratory, one must be consciuos of chemicals extinguishing water safety 14 Where is the appropriate place to position the fire extinguisher in the laboratory? centre of laboratory behind the laboratory close to the laboratory door top of laboratory bench 15 These activities could be carried out in a library EXCEPT locate materials on shelves perform practicals and experiments read through reference materials identify the subject index 16 The mode of extinguishing fire depends on class of fire extinguishing tank all types of fire time to extinguish 17 The personnel that are responsible for extinguishing fire outbreak are called fire police flame controller fire brigade smoke spayer 18 Which class of fire could be water put off? D C B A 19 If fire is produced by spilled liquid, the best extinguisher is buckets forms carbon IV oxide blankets 20 The most readily available laboratory fire extinguisher is vapourising liquid form extinguisher fire blanket fire bucket