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WorksheetsHSCT 2021 (2)
Total questions: 33
Worksheet time: 17mins
Which of the following is not a physical method for mitigation?
Diking
Dilution
Adsorption
Overpacking
Which of the following is set as the dose pre-alarm for Saphydose?
300 mSv
25 mSv
250 mSv
50 mSv
Which of these is a form of ionizing radiation with a range of approximately 3cm?
Beta
Alpha
Gamma
Neutron
100 litres of Propanoic acid with pH 5 has spilled onto the ground. How many litres of water is required to dilute the spill to pH 7?
10000
100
1000
100000
Convert 20mg/m3 of Ammonia gas (NH3) at room temperature and pressure to ppm.
28.2ppm
26.4ppm
15.2ppm
14.2ppm
FH40 alarm will be triggered at which of the following rate reading?
100 cps
10 cps
50 cps
1000 cps
How long can an unopened and undamaged Saratoga CA suite be stored?
10 years
20 days
24 hours
6 hours
The auto-ignition temperature of pentane is 500ºF, at what temperature will it self-ignite in ºC?
296ºC
227ºC
260ºC
842ºC
Radium-223 is a radioactive isotope. How many protons and neutrons does it have?
88 protons, 226 neutrons
88 protons, 223 neutrons
88 protons, 138 neutrons
88 protons, 135 neutrons
100 litres of Hydrochloric acid with pH 3 has spilled onto the ground. How many litres of water is required to dilute the spill to pH 7?
100
1000000
100000
1000
At 2m away from a radiation source, the dose rate was found to be 1Sv/hr. What is the prescribed distance between the source and the Cold-Warm boundary?
20m
200m
2000m
20000m
Convert 20mg/m3 of methane gas (CH4) at room temperature and pressure to ppm.
13.3 ppm
30.0 ppm
14.3 ppm
28.0 ppm
Radon-219 is a radioactive isotope. How many protons and neutrons does it have? To
86 protons, 222 neutrons
86 protons, 219 neutrons
86 protons, 136 neutrons
86 protons, 133 neutrons
The packaging for a new Saratoga CA suit was found to be damanged. What is the current shelf-life of the suit?
6 hours
20 days
24 hours
10 days
At 3m away from a radiation source, the dose rate was found to be 1Sv/hr. What is the prescribed distance between the source and the Cold-Warm boundary?
30m
300m
3000m
30000m
After an incident involving a hydrogen cyanide leak, responders should decontaminate using __________.
Mild bleach soulution
Water
Soap and water, followed by bleach solution
Soap and water
Before entering the warm zone, how would you reset the cumulative dose reading on the Ultra Radiac back to zero?
Press DOSE and RATE simultaneously for 5 seconds
Press DOSE 2 times quickly
Press DOSE and CLR/TEST simultaneously for 5 seconds
Press and hold DOSE for 5 seconds
In a “dirty bomb” incident, what is the demarcation for radiation hotspots exceeding 100mSv/hr?
Blue e-flare
Amber e-flare
White e-flare
Red e-flare
Lethal Dose refers to the concentration of toxic substances that enters the human body through;
i. Ingestion
ii. Injection
iii. Dermal Absorption
iv. Inhalation
iv
i, ii, iii
i, iii
ii, iii, iv
The following actions can be taken in a fire involving explosive substances:
Evacuate the public to a safe distance
Seek advice from expert representatives from the premises
Conduct defensive fire fighting
All of the above
chemical agents cause the following effects: build-up of fluid in the lungs, corrosive effect on the eyes and skin
Hydrogen Cyanide
Phosgene
Nitrogen Mustard
Soman
Which of the following regarding the Saratoga CA suit is false?
The suit can be re-used as long as the responder does not touch any contaminants.
The suit can be used for up to 6 hours in a contaminated environment.
A sealed suit can be stored for up to 10 years.
An uncontaminated suite can be worn continuously over several days.
For response to a suspected CA incident, why does the initial arriving crew arrive in bunker gear with SCBA?
It takes too long to don CA suits, affecting response time.
To minimize the logistics of opening up operational CA suits.
To minimize undue alarm to members of public and to reduce the signature of response until the incident is confirmed.
Bunker gear with SCBA provides best protection against CA.
Short-Term Exposure Limit (STEL) is the acceptable average exposure over a short period of _____ minutes as long as the time-weighted average is not exceeded.
15
5
30
60
An Isotope of a chemical element has the following properties compared to the normal state of that element:
The same number of protons and neutrons
The same number of protons but different number of neutrons
The same number of protons but different number of electrons
The same number of protons and electrons
Calcium carbide belongs to which of the following hazard classes?
Class 4
Class 1
Class 2
Class 6
Substances with a low vapour pressure are __________.
Less likely to evaporate
More likely to evaporate
Likely to sink in air
Less likely to rise in air
Which e-flare is used to indicate the start of the hot zone in an incident involving toxic chemicals?
White
Amber
Red
Blue
Which of the following is not a stage in Pump Ladder decontamination?
Drying
Registering
Showering
Undressing
Which of the following is a task for the first arriving PL(DO) in a Chemical Agent incident?
Decontamination
Monitoring
Medical treatment
Mitigation
Which of the following is the Dose high alarm for Ultra Radiac?
100µSv/hr
1µSv/hr
50mSv
250mSv
The Draeger Tubes should not be used to measure the concentration of which of the following substances?
Tabun
Ammonia
Chlorine
Phosgene
Aromatics are hydrocarbons which contain:
A six carbon ring structure
One single-bond only
A pair of double-bond
A triple-bond
