Question

20. If your clothing catches on fire, you should A: run to the nearest safety-shower B: ask your friend to use a fire extinguisher on you C: drop down and roll on the floor D: ask your friend to use a fire hose on you 21. A student identified a compound to be toxic and determined that contact is possible during an experiment involving that chemical. The student wore appropriate gloves and the required PPE. What did the student overlook in dealing with this toxic substance? A: assess the risks B: minimize the risks C: recognize the hazards D: plan for emergencies 22. Our skin is primarily made of lipids. What property of a chemical determine how quickly it is absorbed through our skin? A: water solubility B: oil solubility C: pH D: flash point 23. When heating a liquid in a test-tube, the open end of the test tube should be A: pointed towards your lab partner B: covered with a stopper C: pointed towards you D: pointing at an angle, and facing the inside of a fume hood, so that the liquid can splash gently on the sides without overflowing 24. Hazard associated with a cryogenic substance is A: it's flammability B: it's potential detonation C: asphyxiation D: it's toxicity 25. Incompatible chemicals A: react violently when mixed B: produce hazardous products when mixed C: both A and B D: require refrigerator storage A bottle of benzene should carry which pictogram? A through

Answer 1

L 100M MALLA do 4 clothing catches on fire, you should use drop down and roll technique, this helps to extinguish the flames. so, option C[ drop down and soll on the floor ] 2 of PP E are used properly. Then, we minimize the chances of wok. Hence, coprie-B) is covers 22 since, lipids are made up of fats. So fat solebilily determine's how quickly wit is Labsorbed through skin. (option-B) ou soubility | When heating a liquid in test tube, Open end of test tube. O The test tube should point at an angle facing inside fume hood to that liquid cal splash gantly Hoption-D)

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