Aerosols- MCQs
1. Topical pharmaceutical solutions are formulated using
a) butane
b) isobutene
c) propane
d) all of these
Answer: d) all of these
2. The particle size for metered-dose inhalants should remain in the micrometer range and
should be
a) 2-8 micrometers
b) 5-10 micrometers
c) 10-15 micrometers
d) 2-10 micrometers
Answer: a) 2-8 micrometers
3. Active ingredients that may be irritating if inhaled can be used as
a) spray
b) foam
c) wet stream
d) all of these
Answer: b) foam
4. In Pressure filling apparatus, the pressure exerted by ____ helps in the flow of the
propellant into the container
a) Hydrogen
b) Argon
c) CFC
d) Nitrogen
Answer: d) Nitrogen
5. Aerosol containers must be able to withstand pressures as high as ____ at 130 °F.
a) 100 to 180 psig
b) 120 to 170 psig
c) 140 to 180 psig
d) 140 to 200 psig
Answer: c) 140 to 180 psig
6. Glass used for aerosol containers is/are
a) Uncoated glass
b) Plastic-coated glass
c) Both of these
d) None of these
Answer: c) Both of these
7. Valves may be
a) Continuous spray valve
b) Metering valves
c) Both of these
d) None of these
Answer: c) Both of these
8. Propellant 114 is
a) methane derivative
b) ethane derivative
c) propane derivative
d) butane derivative
Answer: b) ethane derivative
9. Molecular formula of Dichlorotetrafluoroethane is
a) CCl3F
b) CCl2F2
c) CClF2CClF2
d) None of these
Answer: c) CClF2CClF2
10. The compounds chosen for Liquefied-gas systems generally have boiling points
a) below 70°F
b) below 21°C
c) above 70°F
d) a and b
Answer: d) a and b
11. The compressed gases used as aerosol propellants are
a) nitrogen
b) nitrous oxide
c) carbon dioxide
d) all of these
Answer: d) all of these
12. The dip tubes are made from
a) Nylon
b) Derlin
c) Buna-N
d) Polyethylene
Answer: d) Polyethylene
13. Which of the following is responsible for developing proper pressure within the
container?
a) Propellant
b) Container
c) Valve
d) Product concentrate
Answer: a) Propellant
14. In Pressure filling apparatus, the propellant stops flowing when the pressure of burette
and container becomes
a) equal
b) 0
c) 1
d) none of these
Answer: a) equal
15. Manufacture of pharmaceutical aerosols can be done by
a) Pressure filling apparatus
b) Cold filling apparatus
c) Compressed gas filling apparatus
d) All of these
Answer: d) All of these
16. In Pressure filling apparatus, the pressure exerted by ____ helps in the flow of the
propellant into the container
a) Hydrogen
b) Argon
c) CFC
d) Nitrogen
Answer: d) Nitrogen
17. Metals used for aerosol containers are
a) Tinplated steel
b) Aluminum
c) Stainless steel
d) All of these
Answer: d) All of these
18. Aerosol containers are made up of
a) metals
b) glass
c) plastic
d) a and b
Answer: d) a and b
19. Before use, the insulated box in cold filling apparatus should be filled with
a) dry ice
b) acetone
c) ethanol
d) a and b
Answer: d) a and b
20. This apparatus consists of a delivery gauge. Identify
a) Pressure filling apparatus
b) Cold filling apparatus
c) Compressed gas filling apparatus
d) All of these
Answer: c) Compressed gas filling apparatus
