NCEIV38 0-0808 Flashcards

1
Q

Lesson 38

A

Lesson 38 Water and the traveler

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

Contamination o

A

Contamination of water supplies is usually due to poor sanitation close to water sources, sewage disposal into the sources themselves, leakage of sewage into distribution systems or contamination with industrial or farm waste.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

Even if a piped

A

Even if a piped water supply is safe at its source, it is not always safe by the time it reaches the tap.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

Intermittent ta

A

Intermittent tap-water supplies should be regarded as particularly suspect.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

Travelers on sh

A

Travelers on short trips to areas with water supplies of uncertain quality should avoid drinking tap-water, or untreated water from any other source.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

It is best to h

A

It is best to hot drinks, bottled or canned drinks of well-known brand names – international standards of water treatment are usually followed at bottling plants.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

Carbonated drin

A

Carbonated drinks are acidic, and slightly safer.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

Make sure that

A

Make sure that all bottles are opened in your presence, and that their rims are clean and dry.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

Boiling is alwa

A

Boiling is always a good way of treating water.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

Some hotels sup

A

Some hotels supply boiled water on request and this can be used for drinking, or for brushing teeth.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

Portable boilin

A

Portable boiling elements that can boil small quantities of water are useful when the right voltage of electricity is available.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

Refuse politely

A

Refuse politely any cold drink from an unknown source.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

Ice is only as

A

Ice is only as safe as the water from which it is made, and should not be put in drinks unless it is known to be safe.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

Drink can be co

A

Drink can be cooled by placing them on ice rather than adding ice to them.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

Alcohol may be

A

Alcohol may be a medical disinfectant, but should not be relied upon to sterilize water.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

Ethanol is more

A

Ethanol is more effective at a concentration of 50-70 per cent; below 20 per cent, its bactericidal action is negligible.

17
Q

Spirits labelle

A

Spirits labelled 95 proof contain only about 47 per cent alcohol.

18
Q

Beware of methy

A

Beware of methylated alcohol, which is very poisonous, and should never be added to drinking water.

19
Q

If no other saf

A

If no other safe supply can be obtained, tap water that is too hot to touch can be left to cool and is generally safe to drink.

20
Q

Those planning

A

Those planning a trip to remote areas, or intending to live in countries where drinking water is not readily available, should know about the various possible methods for making water safe.