KSWindow HelpDEC15Choose BEST answer from drop-down menuChoosedocs.google.comIn the highly unlikely event of a fire in the laboratory, you shouid:a) use the fire extinguisher.b) stop, drop, and roll.c) calmly evacuate the lab.Post Attendee - ZoomChoose BEST answer from drop-down menuChooseIdentification of an unknown is an example of:a) quantitative analysis.b) the Dumas method.c) gravimetric analysis.d) qualitative analysis.átvNAJVAO

Fire extinguishers remove oxygen so the fire cannot continue to burn.In the highly unlikely event of a fire in the laboratory, you shouid: a) use the fire extinguisher. Hence, best answer is option a a) Quantitative analysis is any method used for determining the amount of a chemical in a sample. Example : acid-base titration. In this method unknown compound is not identified.Hence this is incorrect option. b) The Dumas method is a procedure used to determine the molecular weight of an unknown substance.so it is quantitative method. In this method unknown compound is not identified.Hence this is incorrect option. c) Gravimetric analysis is a method in analytical chemistry to determine the quantity of an analyte based on the mass of a solid. This is quantitative method. In this method unknown compound is not identified.Hence this is incorrect option. d) Qualitative analysis deals with the identification of elements or or functional groups and identification of an unknown compound. Hence, identification of unknown compound is a qualitative method (option d)