Hazmat Technician Exam Questions and Answers
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what is MC-306/DOT 406? - ✔✔Non-Pressure Cargo Truck
What does the head of a 306/406 look like? - ✔✔Flat, may be slightly rounded
What does the cross section of a 306/406 look like? - ✔✔Elliptical
What do 306/406 most carry? - ✔✔petroleum products such as gasoline and fuel oil.
What specifically do 306/406 carry? - ✔✔alcohol (UN/DOT Hazard Class 3.0)
jet fuel (UN/DOT Hazard Class 3.0)
liquid food products
flammable and combustible liquids (UN/DOT Hazard Class 3.0)
What can 306/406 be referred to as besides non pressure cargo? - ✔✔atmospheric tank trucks
What is the capacity of MC 306/ DOT 406 - ✔✔The capacity of MC-306/DOT-406 cargo tank trucks
ranges from 2,000 gallons (7,572 liters) up to 10,000 gallons (37,854 liters). Some can hold 16,000 gallons
(60,567 liters) or more. These larger cargo tanks are sometimes referred to as "supertankers."
What is the pressure of a 306/406? - ✔✔MC-306/DOT-406 cargo tanks are designed for working
pressures of less than 4 psi (28 kPa).
What are 306/406 typically made of? - ✔✔Over 90% of these tanks are constructed of aluminum
Page 1/44
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,How can you determine the number of compartments on a 306/406? - ✔✔many cases, you can determine
the number of compartments by counting the number of internal safety valves (bottom outlets) or control
valves.
What is overturn protection? - ✔✔Overturn rails or guards are designed to protect all fill openings,
manways, inspection devices, and relief devices from damage during a rollover.
Where is the emergency shutoff on a 306/406? - ✔✔There is a shutoff on the driver's side at the left front
of the tank, and there may be an additional one at the right rear of the tank.
What is a MC 307/ DOT 407? - ✔✔Low Pressure Cargo Tanks
What is the capacity of MC 307/407? - ✔✔On average, MC-307/DOT-407 tanks have a capacity of 5,000-
7,000 gallons (18,931- 26,504 liters).
What is the minimum pressure of a 307/407? - ✔✔MC-307/DOT-407 tanks have a minimum design
pressure of 25 psig (172 kPa).
What is the working pressure of a 307/407? - ✔✔Typical working pressures for the MC-307/DOT-407
range from approximately 35 psig to to under 40 psig (172-275 kPa).
What is the cross section of a 307/407? - ✔✔Low pressure tanks are circular in cross-section.
What is the pressure of the cylinders in a high pressure tube trailer? - ✔✔The pressures in the cylinders of
a high pressure trailer tube may reach up to 5,000 psi (34,474 kPa)
What is a MC-312/DOT-412? - ✔✔Corrosive Liquid Cargo Tank Trucks (MC-312/DOT-412)
What does the cross sections and head of a 312/412 look like? - ✔✔MC-312/DOT-412 tanks have circular
cross-sections with disc shaped heads.
What is the capacity of a 312/412? - ✔✔The capacity of corrosive liquid MC-312/DOT-412 cargo tanks
ranges from 3,000 to 7,000 gallons
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,What is the pressure of 312/412? - ✔✔MC-312/DOT-412 tanks have an approximate working pressure of
5-25 psig (34-172 kPa)
What is a MC 338? - ✔✔Cryogenic Liquid Tank
What can MC 338 do? - ✔✔The design of a cryogenic liquid cargo tank allows it to carry gases that have
been liquefied through temperature reduction.
Capacity of a MC 338? - ✔✔MC-338s have a capacity of 8,000 to 10,000 gallons
What is an MC 331? - ✔✔High Pressure Tank
Capacity of a 331? - ✔✔MC-331 tanks have a capacity ranging from 8,000 to 11,500 gallons (30,290-43,543
liters).
What is the pressure of a 331? - ✔✔Design pressures for MC-331 tanks range from 100 psig to 500 psig
(690 to 3,447 kPa), but be prepared to find a normal operating pressure of approximately 250 psig (1,724
kPa).
What is does the cross section and head look like on a 331? - ✔✔pressure tanks are built with circular
cross-sections and rounded heads
What are pressurized portable tank containers used to transport? - ✔✔Pressure portable tank containers
are used to transport liquefied gases and liquids such as:
liquefied petroleum gas (UN/DOT Hazard Class 2.1)
anhydrous ammonia (UN/DOT Hazard Class 2.2)
high vapor pressure flammable liquids (UN/DOT Hazard Class 3.0)
sodium (UN/DOT Hazard Class 4.3)
aluminum alkyls (UN/DOT Hazard Class 4.2)
Page 3/44
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, motor fuel anti-knock compound (UN/DOT Hazard Class 3.0)
What is the psi and capacity of portable pressure tank containers? - ✔✔Pressure tank containers are
designed to handle internal pressures ranging from 100 psig to 500 psig (690 to 3,447 kPa) and to contain
up to 5,500 gallons (20,824 liters).
What is the psi of a non pressure portable tank? - ✔✔Nonpressure portable tanks carry solid and liquid
materials at maximum allowable working pressures (MAWP) of up to 100 psig (690 kPa).
What do non pressure portable tanks carry? - ✔✔food grade commodities
whiskey (UN/DOT Hazard Class 3.0)
liquid fertilizers (UN/DOT Hazard Class 6.1)
flammable and combustible solvents (UN/DOT Hazard Class 3.0)
resins
sodium hydroxide (UN/DOT Hazard Class 8.0)
water treatment chemicals (UN/DOT Hazard Class varies)
What is the capacity of a non pressure tank? - ✔✔maximum capacity of 6,300 gallons (24,000 L)
What do IM101 carry? - ✔✔IM-101 tanks carry toxics (UN/DOT Hazard Class 6.1) , corrosives (UN/DOT
Hazard Class 8), and flammable liquids (UN/DOT Hazard Class 3) with flash points below 32º F (0º C).
What is the psi of a IM 101 - ✔✔IM-101 portable tank containers, known internationally as IMO Type 1
tank containers, are built to withstand maximum allowable working pressures ranging from 25.4 psig to
100 psig
What is the capacity of a IM 101? - ✔✔Capacities normally range from 5,000 to 6,300 gallons
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100% Pass
what is MC-306/DOT 406? - ✔✔Non-Pressure Cargo Truck
What does the head of a 306/406 look like? - ✔✔Flat, may be slightly rounded
What does the cross section of a 306/406 look like? - ✔✔Elliptical
What do 306/406 most carry? - ✔✔petroleum products such as gasoline and fuel oil.
What specifically do 306/406 carry? - ✔✔alcohol (UN/DOT Hazard Class 3.0)
jet fuel (UN/DOT Hazard Class 3.0)
liquid food products
flammable and combustible liquids (UN/DOT Hazard Class 3.0)
What can 306/406 be referred to as besides non pressure cargo? - ✔✔atmospheric tank trucks
What is the capacity of MC 306/ DOT 406 - ✔✔The capacity of MC-306/DOT-406 cargo tank trucks
ranges from 2,000 gallons (7,572 liters) up to 10,000 gallons (37,854 liters). Some can hold 16,000 gallons
(60,567 liters) or more. These larger cargo tanks are sometimes referred to as "supertankers."
What is the pressure of a 306/406? - ✔✔MC-306/DOT-406 cargo tanks are designed for working
pressures of less than 4 psi (28 kPa).
What are 306/406 typically made of? - ✔✔Over 90% of these tanks are constructed of aluminum
Page 1/44
Crafted for Academic Insight by KatelynWhitman. All rights reserved © 2025
,How can you determine the number of compartments on a 306/406? - ✔✔many cases, you can determine
the number of compartments by counting the number of internal safety valves (bottom outlets) or control
valves.
What is overturn protection? - ✔✔Overturn rails or guards are designed to protect all fill openings,
manways, inspection devices, and relief devices from damage during a rollover.
Where is the emergency shutoff on a 306/406? - ✔✔There is a shutoff on the driver's side at the left front
of the tank, and there may be an additional one at the right rear of the tank.
What is a MC 307/ DOT 407? - ✔✔Low Pressure Cargo Tanks
What is the capacity of MC 307/407? - ✔✔On average, MC-307/DOT-407 tanks have a capacity of 5,000-
7,000 gallons (18,931- 26,504 liters).
What is the minimum pressure of a 307/407? - ✔✔MC-307/DOT-407 tanks have a minimum design
pressure of 25 psig (172 kPa).
What is the working pressure of a 307/407? - ✔✔Typical working pressures for the MC-307/DOT-407
range from approximately 35 psig to to under 40 psig (172-275 kPa).
What is the cross section of a 307/407? - ✔✔Low pressure tanks are circular in cross-section.
What is the pressure of the cylinders in a high pressure tube trailer? - ✔✔The pressures in the cylinders of
a high pressure trailer tube may reach up to 5,000 psi (34,474 kPa)
What is a MC-312/DOT-412? - ✔✔Corrosive Liquid Cargo Tank Trucks (MC-312/DOT-412)
What does the cross sections and head of a 312/412 look like? - ✔✔MC-312/DOT-412 tanks have circular
cross-sections with disc shaped heads.
What is the capacity of a 312/412? - ✔✔The capacity of corrosive liquid MC-312/DOT-412 cargo tanks
ranges from 3,000 to 7,000 gallons
Page 2/44
Crafted for Academic Insight by KatelynWhitman. All rights reserved © 2025
,What is the pressure of 312/412? - ✔✔MC-312/DOT-412 tanks have an approximate working pressure of
5-25 psig (34-172 kPa)
What is a MC 338? - ✔✔Cryogenic Liquid Tank
What can MC 338 do? - ✔✔The design of a cryogenic liquid cargo tank allows it to carry gases that have
been liquefied through temperature reduction.
Capacity of a MC 338? - ✔✔MC-338s have a capacity of 8,000 to 10,000 gallons
What is an MC 331? - ✔✔High Pressure Tank
Capacity of a 331? - ✔✔MC-331 tanks have a capacity ranging from 8,000 to 11,500 gallons (30,290-43,543
liters).
What is the pressure of a 331? - ✔✔Design pressures for MC-331 tanks range from 100 psig to 500 psig
(690 to 3,447 kPa), but be prepared to find a normal operating pressure of approximately 250 psig (1,724
kPa).
What is does the cross section and head look like on a 331? - ✔✔pressure tanks are built with circular
cross-sections and rounded heads
What are pressurized portable tank containers used to transport? - ✔✔Pressure portable tank containers
are used to transport liquefied gases and liquids such as:
liquefied petroleum gas (UN/DOT Hazard Class 2.1)
anhydrous ammonia (UN/DOT Hazard Class 2.2)
high vapor pressure flammable liquids (UN/DOT Hazard Class 3.0)
sodium (UN/DOT Hazard Class 4.3)
aluminum alkyls (UN/DOT Hazard Class 4.2)
Page 3/44
Crafted for Academic Insight by KatelynWhitman. All rights reserved © 2025
, motor fuel anti-knock compound (UN/DOT Hazard Class 3.0)
What is the psi and capacity of portable pressure tank containers? - ✔✔Pressure tank containers are
designed to handle internal pressures ranging from 100 psig to 500 psig (690 to 3,447 kPa) and to contain
up to 5,500 gallons (20,824 liters).
What is the psi of a non pressure portable tank? - ✔✔Nonpressure portable tanks carry solid and liquid
materials at maximum allowable working pressures (MAWP) of up to 100 psig (690 kPa).
What do non pressure portable tanks carry? - ✔✔food grade commodities
whiskey (UN/DOT Hazard Class 3.0)
liquid fertilizers (UN/DOT Hazard Class 6.1)
flammable and combustible solvents (UN/DOT Hazard Class 3.0)
resins
sodium hydroxide (UN/DOT Hazard Class 8.0)
water treatment chemicals (UN/DOT Hazard Class varies)
What is the capacity of a non pressure tank? - ✔✔maximum capacity of 6,300 gallons (24,000 L)
What do IM101 carry? - ✔✔IM-101 tanks carry toxics (UN/DOT Hazard Class 6.1) , corrosives (UN/DOT
Hazard Class 8), and flammable liquids (UN/DOT Hazard Class 3) with flash points below 32º F (0º C).
What is the psi of a IM 101 - ✔✔IM-101 portable tank containers, known internationally as IMO Type 1
tank containers, are built to withstand maximum allowable working pressures ranging from 25.4 psig to
100 psig
What is the capacity of a IM 101? - ✔✔Capacities normally range from 5,000 to 6,300 gallons
Page 4/44
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