THE BEST WAY TO STORE CHEMICALS IS A. IN ALPHABETICAL ORDER. B. SEGREGATE BY CHEMICAL GROUPING TO ENSURE COMPATIBILITY. C. IN THE HALLWAY. D. ANY OF THE ABOVE.
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A. IN ALPHABETICAL ORDER. B. SEGREGATE BY CHEMICAL GROUPING TO ENSURE COMPATIBILITY. C. IN THE HALLWAY. D. ANY OF THE ABOVE. |
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- IN THE EVENT OF A FIRE, SEVERE WEATHER OR ANY OTHER EVENT REQUIRING LAB EVACUATION.... A. STABALIZE REACTIONS IN PROGRESS.B. CLOSE FUME HOOD SASHES.C. CLOSE THE LAB DOOR.D. ALL OF THE ABOVE.1. Samples that should not be stored should be prepared/analyzed as soon as possible, especially for measurement…a. hardnessb. Nitritec. Conductivityd. Phenol 2. The following are general sample treatments in pesticide analysis, except…a. Extractionb. Cleaningc. Concentrationd. FilteringSubparts 4-6
- A. Add HCI (aq) solution to both. B. Add Tollen's reagent to both. C. Add KOI reagent to both. D. Add Br2/CCI, to both. E. Add NaHCO, (aq) solution to both. F. Add Acetyl Chloride to both. G. Add HCRO4 /A to both. H. Beilstein Flame Test on both. I. Ferrous Hydroxide Test on both. J. Add cold concentrated H,SO, (aq) solution to both. K. Add FeCl3 (aq) solution to both L. Add water to both. M. Add cold KMNO4 (aq) solution to both. N. Cerium (IV) Test on both. O. Add Lucas reagent to both at room temperature. P. Add ROH to both. Q. Add 2,4-DNPH reagent to both. R. Add 15% Nal/Acetone to both. S. Add 2% AGNO,/ETOH.Which of the following may cause tailing? I. Heavy spots II. Thick paper III. Volatile solvent IV. Open chamber Select one: a. I and II b. I only c. I and IV d. I and IIISolutions make it easier to A.handle chemicals safely B.react chemicals with one another C.control rate, extent, and type of reaction D.all the above
- 21. In a cleaning mixture based on a mixture of water and oil, an additional ingredient is needed to unite it, which is called .... A. emullientB. emulsifierC. preservativesD. suspending agent 22. The side effects of using shampoo in hair damage can be overcome by…. A. reduce shampoo contact time with hairB. all answers are correctC. Dilute the shampoo with water before useD. pH of shampoo is made neutralA. Add HCI (aq) solution to both. B. Add Tollen's reagent to both. C. Add KOI reagent to both. D. Add Br2/CCI, to both. E. Add NaHCO3 (aq) solution to both. F. Add Acetyl Chloride to both. G. Add HCRO4/A to both. H. Beilstein Flame Test on both. I. Ferrous Hydroxide Test on both. J. Add cold concentrated H2SO, (aq) solution to both. K. Add FeCl3 (aq) solution to both L. Add water to both. M. Add cold KMNO4 (aq) solution to both. N. Cerium (IV) Test on both. O. Add Lucas reagent to both at room temperature. P. Add ROH to both. Q. Add 2,4-DNPH reagent to both. R. Add 15% Nal/Acetone to both. S. Add 2% AgNO,/ETOH.What's In I. True or False. Write true if the statement is correct and false if it is incorrect. Use separate paper for your answers. 1. In sterilization process, alcohol solution should be 70%-90%. 2. It is very important to observe safety rules in sanitizing tools and equipment. 3. First thing to do in the preparation of metal implements is to soak the tools in cold soapy water. 4. Remove immediately tools and implements from disinfectant solution. 5. In storing tools and implements keep unclean and dull. 6. All hair, used cotton or other waste materials must be removed from the floor right away, and deposit it in a closed container. 7. Each beautician must wear a washable uniform while serving clients. 8. Only VIP's client must be provided with a freshly laundered towel. 9. Finger bowls must be sanitized before another client use them. 10. All waste materials should be disposed of in an enclosed waste bin fitted with polythene bin liner, durable enough to resist tearing.
- is a process performing on liner to create inert condition. O a. Deactivation on liner materials O b. Degasser on liner materials O c. Design on liner materials O d. Answer a and cMatch each chemical or item with the proper disposal or cleanup method. Not all disposal and cleanup methods will be labeled. damp metal pieces Part B Return to correctly labeled "drying out" beaker. Answer Bank damp metal pieces Part B Place used items in the drawer. calcium chloride solutions Part A Rinse with deionized water, dry as best you can, return to volumetric flask Part A the instructor. volumetric flask Part A metal sheets Part C Return used material to the instructor. damp metal pieces Part B calcium chloride solutions Part A Pour down the sink with plenty of running water. metal sheets Part c volumetric flask Part A Pour into aqueous waste container. damp metal pieces Part B Place used items in garbage.In the event of an acid leak, what is the best technique to ensure that the acid is safe to handle? a. Dilluting b. Fusion c. Concentrating d. Evaporating