WorksheetsWater Quality and Boiler Treatment Quiz
Total questions: 15
Worksheet time: 8mins
What is the purpose of internal treatment of boiler feed water?
To remove dissolved gases only
To condition water using chemicals like phosphate and sodium aluminate
To filter out large debris
To add minerals to water
Which process is used for the external treatment of boiler feed water?
Chlorination
Demineralization and zeolite process
Priming and foaming
Caustic embrittlement
According to the content, which standard is used for specifications for drinking water?
ASTM
BIS - WHO standards
ISO 9001
FDA
Water is necessary for both plants and animals to survive because:
It is used in photosynthesis for plants and in metabolic processes for animals.
It is only necessary for animals to drink.
It is only necessary for plants to grow.
It is not necessary for either plants or animals.
What is the endless circulation of water between the atmosphere, lithosphere, hydrosphere, and biosphere called?
Hydrologic cycle
Carbon cycle
Nitrogen cycle
Photosynthesis
The distribution of water over land is considered uneven. Which evidence from global water distribution best supports this statement?
Most water is found in the oceans, leaving little fresh water on land
All continents have equal amounts of water
Water is only found in rivers and lakes
Water is evenly spread across all land areas
Why can't sea water be used for drinking?
Because it is too cold
Because it contains unsuitable constituents
Because it is always polluted
Because it is colorless
Why does water never occur in its pure form in nature?
Because it always contains dissolved substances
Because it evaporates quickly
Because it is always frozen
Because it is always mixed with oil
The ability of water to dissolve substances affects its use in daily life in which of the following ways?
It allows water to carry nutrients and chemicals, making it essential for biological and industrial processes.
It makes water unsafe to drink.
It prevents water from being used in cleaning.
It causes water to freeze at higher temperatures.
In which units is temperature commonly measured?
°C or °F
kg or g
m or cm
L or mL
Which unit is used to measure suspended solids in water?
mg/L
ppm
g/L
mL/L
At what temperature range should the filter paper be dried in an oven according to the procedure?
103ºC to 105ºC
90ºC to 95ºC
110ºC to 120ºC
80ºC to 85ºC
What is the formula for calculating the concentration of suspended solids in the sample?
Ws / V
Wf / V
(Ws - Wf) / V
(Wf - Ws) / V
If the weight of the filter paper with suspended matter (A) is 2.5 g, the weight of the filter paper alone (B) is 2.0 g, and the volume of the sample is 1 L, what is the Suspended Solid concentration in mg/L?
500 mg/L
250 mg/L
2000 mg/L
5 mg/L
Why is it important to use a well-shaken sample of wastewater in step ii of the procedure?
To ensure the solids are evenly distributed for accurate analysis
To increase the temperature of the sample
To remove dissolved gases
To sterilize the sample
