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Refresher 1 Flashcards

1
Q

What color of safety helmet is used by
engineers, managers, supervisors and
foremen?

A

WHITE

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2
Q

What color of safety helmet is used by
safety officers?

A

green

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3
Q

When should a hard hat be worn?

A

Only in areas with a potential for head
injuries from falling objects (for falling debris) - for top portion of head

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4
Q

What color of safety helmet is used by
Fire fighters?

A

red

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5
Q

What color of safety helmet is used by
electricians, carpenters and other technical operator?

A

blue

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6
Q

What color of safety helmet is used by
Labourers and earth moving operators?

A

yellow

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7
Q

What color of safety helmet is used by
Welders, workers and high heat application?

A

brown

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8
Q

What color of safety helmet is used by
Site visitors?

A

grey

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9
Q

Which type of helmet is designed for side impact protection?

A

Safety helmet

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10
Q

How often should a hard hat be inspected?

A

Daily before use - tool box inspection first (all ppe)

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11
Q

What does the color of a hard hat typically indicate?

A

The worker’s job function.

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12
Q

How long does a hard hat typically last?

A

Five years

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13
Q

Which class of fire involves energized electrical equipment?

A

Class C

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14
Q

Which class of fire involves ordinary combustible easy to sunog

A

Class a

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15
Q

Which class of fire involves flammable liquids - liq easy to sunog

A

Class B

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16
Q

Which class of fire involves combustible metal

A

Class D

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17
Q

Which class of fire involves commercial cooking equipment

A

Class K

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18
Q

Which extinguishing agent is commonly used for Class C (electric) fires?

A

Carbon dioxide

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19
Q

How often should you inspect a fire
extinguisher placed outdoors?

A

Monthly

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20
Q

What is the first step to take when
encountering a fire?

A

Raise the alarm and call for help

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21
Q

Fire extinguisher for common combustible

A

Class a

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22
Q

Fire extinguisher for flammable liq, solvent, oil, etc

A

Class b

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23
Q

Fire extinguisher for electrical equip

A

Class c

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24
Q

Fire extinguisher for combustible metals

A

Class d

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25
Fire extinguisher for combustible cooking media
Class k
26
Extinguishing agent for class a solids
Powder, formal, water
27
Extinguishing agent for class b flammable liqs
Powder, formal, co2
28
Extinguishing agent for class c (gases)
powder
29
Extinguishing agent for metals (class d)
powder
30
Extinguishing agent for electrical
powder, co2
31
Extinguishing agent for cooking oils (class f)
Wet chem
32
Color for powder
blue
33
Color for foam
beige
34
Color for co2
black
35
Color for water
red
36
Color for wet chemicals
yellow
37
What color is a water-type fire extinguisher typically painted?
Red
38
Which fire extinguisher type is suitable for fires involving cooking oils?
Wet chemical
39
What does a needle within the green zone on a fire extinguisher pressure gauge indicate?
The extinguisher is in good working condition
40
What should you do if you find a fire extinguisher is missing?
Report it to your manager
41
Who is responsible for ensuring fire extinguishers are in good working condition?
The building owner
42
According to **ANSI** Z89.1-1986, what class of helmets are intended to reduce the force of impact of falling objects and to reduce the danger of contact with exposed low-voltage electrical conductors. For certification, sample shells are proof tested at 2,200 volts of electrical charge?
Class A
43
General (class g) - protect 2200 volts Electrical (class E) - protect 20,000 Common usage - no electrical protection
Class A Class B Class C
44
According to ANSI Z89.1-1986, what class of helmets are intended to reduce the force of impact of falling objects and to reduce the danger of contact with exposed high-voltage electrical conductors. Sample shells are proof tested at 20,000 volts?
class B
45
According to ANSI Z89.1-1986, what class of helmets are intended to reduce the force of impact of falling objects, but offer no electrical protection?
Class c
46
When an object is dropped, it typically forms
parabolic trajectory
47
This includes everything from the Earth's **core** to the surface, including **landforms** like mountains and deserts, as well as the soil and rocks we find on Earth's surface.
geosphere
48
This encompasses all the water on Earth, including oceans, rivers, lakes, groundwater, and ice.
hydrosphere
49
This is the layer of gases that surrounds Earth, including the five atmospheric layers responsible for weather.
atmosphere
50
This includes all living organisms on Earth, from the smallest bacteria to the largest animals and plants.
biosphere
51
These are provided before the intake works to prevent the entry of **big objects** like debris, branches of trees, part of animals etc.
screen
52
This is done to remove the impurities which have specific gravity more than that of water and are settleable.
sedimentation
53
This is a process in which some chemical like alum or ferrous sulphate is mixed in water resulting in particle destabilization.
coagulation
54
This is a physical and chemical process for separating suspended and colloidal impurities from water by passage through a porous bed made up of **gravel and sand** etc.
filtration
55
The filtration of water removes the suspended impurities and removes a large percentage of bacteria but still some of the bacteria remain there in the filtered water. This bacteria may be harmful bacteria (disease producing bacteria) known as pathogenic bacteria. The process of killing these bacteria is known as
disinfection
56
This is done to remove taste and odor and to promote the exchange of gases between the water and the atmosphere.
aeration
57
The reduction or removal of hardness from water is called as
water softening
58
This refers to the dispersion of solid or liquid particles of microscopic size in the air. It can also be defined as a colloidal system in which the dispersion medium is gas and the dispersed phase is solid or liquid.
aerosols
59
____________ is important natural contaminant because of its peculiar properties of irritation and allergy sometimes leading to bronchitis, asthma and dermatitis.
pollens
60
It means burning of solid waste in controlled conditions.
incineration
61
Not burning of solid waste, burn undesired grass to form another form land
kaingin
62
Different species of animals and plants fulfill different functions in the ecological contest. The **role** of each species in an ecosystem is fixed and that is known as its
niche
63
It is the surroundings in which a species live.
habitat
64
The complex of several communities in any area, some at climax and others at different stages of succession, under same climatic conditions is known as
biome
65
It is associated with the ecology of an individual species and its population. It is the study of a particular species and its behavior and adaptation to the environmental condition at every stage of that **individual’s life cycle**. It is sometimes called as species ecology.
autecology
66
It is the study of communities, their composition, their behavior and relation to the environment.
synecology
67
The threshold of audibility is the lowest intensity perceived as a sound is (used in formula of decibel equivalent of sound)
Db = 10 log I / 10^-12 W/M^2 Answer : 10^-12 W/M^2 (threshold of hearing) = 0db
68
Highest sound that can hear (beyond eardrums destruction)
Threshold of pain = 1 W/M^2 = 120Db

D3 (10 decks)

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