Which of the elements listed below belong to the halogen group?
a. Na, Ca, K
b. C, O, H
c. F, Cl, Br, I
d. Au, Ag, Pt
Answer
The correct answer is C
(Fluorine, Chlorine, Bromine and Iodine)
The pneumoconiosis that is caused by inhalation of iron oxide is called?
a. Anthracosis
b. Siderosis
c. Silicosis
d. Silicosiderosis
Answer
The correct answer is B
Anthracosis is a pneumoconiosis caused by the exposure to coal dust (black lung)
Silicosis is a pneumoconiosis caused by the dust of stone, sand or flint containing silica.
Siderosis is a lung disease caused by inhalation of iron oxide or other metallic particles.
Silicosiderosis is a pneumoconiosis in which the inhaled dust is that of silica and iron
1
,IF a vessel contains 80% air and 20% hydrocarbons, what is he oxygen content of the vessel?
a. 14%
b. 21%
c. 16.8%
d. 15.5%
Answer
The correct answer is C
Normal air contains 21% oxygen by volume. The question states the vessel only contains 80%
normal air, therefore
0.21 x 0.80 = 0.168 = 16.8%
The tool rest on a grinding wheel should be ______ away from the wheel.
a. 1/4 inch
b. 1/2 inch
c. 1/3 inch
d. 1 inch
Answer
The correct answer is A
Of the choices offered, always keep the tool rest 1/4 inch from the working edge of the
wheel is the best answer. However, you will find 1/8 inch as the required distance in most
safety literature. As a test strategy, I would answer 1/8 of an inch if that is an option, how-
ever, if 1/4 is the lowest number, then select it.
2
,An elevator daily spot check should include which of the following?
a. V-Groove
b. Governor
c. Cable gripper jaws
d. Brakes
Answer
The correct answer is D
According to the NSC Accident Prevention Manual (Administration and Programs) daily spot
checks of elevators should be conducted at the beginning of each day and include: level floor
stops, testing of the alarm bell, brakes and other mechanical operations. Selection A "V-
Groove refers to older friction equipment in which the hoisting rope is not attached ot the
machine. The elevator ismoved by the traction of the ropes in v-grooves on the drive pulley.
The V-groove would require monthly inspection. Selection B "Governor" refers to a speed
control device that is normally checked monthly. Selection C "cable gripper jaws" refers to
cable grabbing devices that hold governors, counter weights or the car itself, which are in-
spected annually.
Which of the following measurements does not the inverse square law not apply to?
a. Heat
b. Illumination
c. Noise
d. Radiation
Answer
The correct answer is C
You can use the inverse square law for measurements concerning noise, illumination and ra-
diation, but not heat.
3
, Damage to the eyes of an unprotected observer from the flash of an electric welder's arc
could be caused by the exposure to:
a. Infrared light
b. Invisible radiation
c. Ultraviolet radiation
d. Sensible light
Answer
The correct answer is C.
Damage to the eyes from ultraviolet radiation is much more violent than those of the visible
or infrared, a sever burn can be produced with little or not warning an significant damage to
the lens of the eye can occur.
When conducting a fire investigation, the number one area to be determine is?
a. Fire ignition sequence
b. Response time
c. Number of deaths
d. Were all building and fire codes followed in construction
Answer
The correct answer is A
To determine the root cause, you need to determine the fire ignition source and the area of
origin.
Carbon tetrachloride is most likely to cause damage to the ______________.
4
a. Na, Ca, K
b. C, O, H
c. F, Cl, Br, I
d. Au, Ag, Pt
Answer
The correct answer is C
(Fluorine, Chlorine, Bromine and Iodine)
The pneumoconiosis that is caused by inhalation of iron oxide is called?
a. Anthracosis
b. Siderosis
c. Silicosis
d. Silicosiderosis
Answer
The correct answer is B
Anthracosis is a pneumoconiosis caused by the exposure to coal dust (black lung)
Silicosis is a pneumoconiosis caused by the dust of stone, sand or flint containing silica.
Siderosis is a lung disease caused by inhalation of iron oxide or other metallic particles.
Silicosiderosis is a pneumoconiosis in which the inhaled dust is that of silica and iron
1
,IF a vessel contains 80% air and 20% hydrocarbons, what is he oxygen content of the vessel?
a. 14%
b. 21%
c. 16.8%
d. 15.5%
Answer
The correct answer is C
Normal air contains 21% oxygen by volume. The question states the vessel only contains 80%
normal air, therefore
0.21 x 0.80 = 0.168 = 16.8%
The tool rest on a grinding wheel should be ______ away from the wheel.
a. 1/4 inch
b. 1/2 inch
c. 1/3 inch
d. 1 inch
Answer
The correct answer is A
Of the choices offered, always keep the tool rest 1/4 inch from the working edge of the
wheel is the best answer. However, you will find 1/8 inch as the required distance in most
safety literature. As a test strategy, I would answer 1/8 of an inch if that is an option, how-
ever, if 1/4 is the lowest number, then select it.
2
,An elevator daily spot check should include which of the following?
a. V-Groove
b. Governor
c. Cable gripper jaws
d. Brakes
Answer
The correct answer is D
According to the NSC Accident Prevention Manual (Administration and Programs) daily spot
checks of elevators should be conducted at the beginning of each day and include: level floor
stops, testing of the alarm bell, brakes and other mechanical operations. Selection A "V-
Groove refers to older friction equipment in which the hoisting rope is not attached ot the
machine. The elevator ismoved by the traction of the ropes in v-grooves on the drive pulley.
The V-groove would require monthly inspection. Selection B "Governor" refers to a speed
control device that is normally checked monthly. Selection C "cable gripper jaws" refers to
cable grabbing devices that hold governors, counter weights or the car itself, which are in-
spected annually.
Which of the following measurements does not the inverse square law not apply to?
a. Heat
b. Illumination
c. Noise
d. Radiation
Answer
The correct answer is C
You can use the inverse square law for measurements concerning noise, illumination and ra-
diation, but not heat.
3
, Damage to the eyes of an unprotected observer from the flash of an electric welder's arc
could be caused by the exposure to:
a. Infrared light
b. Invisible radiation
c. Ultraviolet radiation
d. Sensible light
Answer
The correct answer is C.
Damage to the eyes from ultraviolet radiation is much more violent than those of the visible
or infrared, a sever burn can be produced with little or not warning an significant damage to
the lens of the eye can occur.
When conducting a fire investigation, the number one area to be determine is?
a. Fire ignition sequence
b. Response time
c. Number of deaths
d. Were all building and fire codes followed in construction
Answer
The correct answer is A
To determine the root cause, you need to determine the fire ignition source and the area of
origin.
Carbon tetrachloride is most likely to cause damage to the ______________.
4
