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Level 1 (Basic 11-16)
1. In which country was the first aerosol can made?
2, In which year was the first aerosol can made?
3. How many aerosol cans are made per year in the UK?
4. Name two liquified propellants.
5. Where are liquified propellants stored at an aerosol manufacturer?
6. Which of these propellants is an ideal gas?
PROPANE BUTANE NITROGEN ISO-BUTANE
7. What is the highest safe temperature for an aerosol?
8. What happens inside an aerosol when it is tested in a water bath at 50 ºC ?
9. What are the two metals used to make aerosol cans?
10. What type of welding is used to weld the seam of a steel aerosol can?
11. What process is used to fix the valve assembly into the top of an aerosol can?
12. What is the dry ingredient in dry shampoo?
13. What type of propellants never leave the can?
14. What is the smallest safe size for aerosol particles to avoid breathing them into the lungs?
15. What is 50 microns written in standard form and SI units?
Level 2 (Hard 16+)
1. How is static electricity prevented in rubber conveyor belts?
2. In this graph what must the temperature units be?
3. This is a graph of pressure against temperature for which propellant in an aerosol can?
4. The graph in question 3 shows the pressure line reaching zero at -42 ºC. What happens to the propellant vapour at that temperature?
5. Why are storage tanks for liquified propellants painted white
6. This diagram shows 3 cans filled with nitrogen propellant. When the can is almost empty the pressure is 3 bar.
Estimate the pressure for the full and half full can.
.
7. Which of these are correct descriptions for the nitrogen propellant in the can?
LIQUIFIED VOLATILE REACTIVE INERT VAPOUR IDEAL
8. Aerosols must not produce spray droplets less than 10 microns diameter. Why not?
9. What type of radiation is absorbed by propane gas?
10. Why are flammable gas sensors placed near the ground in aerosol filling buildings?