How many fume hoods are in your lab? 1.2 3 4 Wearing lab coats in lab is optiona

Question

How many fume hoods are in your lab? 1.2 3 4 Wearing lab coats in lab is optional. True False If you need to leave lab temporarily. you should take off your lab cost and gloves first True False For personal safety, it is particularly important foe students to be focused on task During the prelab lecture when handling chemicals when handling glassware All are correct It is poor lab practice to: Recap a reagent bottle immediately after dispensing the required quantity. Use a spatula and powder funnel to return excess reagent to the reagent bottle. Clean the spatula before and after using it to dispense a solid chemical. Recap the waste carboy right after you have disposed of waste liquid chemical the most generally useful decontamination agent in the laboratory is: Magnesium carbonate Cold Water Sodium Bicarbonate Spill kit the most important factor when decontaminating skin after contact with a chemical is: Room temperature Maintaining Modesty Doing so immediately Right-sized gloss in lab. liquid concentrated acids should be stored: In the acid fume hood in the acid-and-haze fume hood in unvented cabinets under a hood on shelves near the balances Goggles must be worn: Once the experiment has started at all times when in the lab Until you pack up to lease lab Except by instructors Which statement is *false*. in preparing a solution of a specific molarity in a volumetric highest accuracy is obtained by working at the glassware's temperature of calibration Quantitative transfer of solid is aided by weighing in a beaker and using a powder fun Dissolve the solid completely before adding liquid up to the mark and mixing. Fill the flask to the mark on the neck before adding the solid to be dissolved. When you have finished using a beret you should empty it into: The nearest sink Back into the stock solution bottle into a waste container None of the above

Explanation / Answer

Q1.

At least 1 fume

Q2.

False, it is mandatory, due to hazard and safety issues

Q3.

False, it is better to always be wearing safety equipment

Q4

Student must be always focused in the lab, therefore all are correct

Q5

Use a spatula and owder funnel to RETURN the excess reagent used, since it could be already contaminated, and could contaminate the whole bottle of reagent (which is clean)

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