81.
What is an important material between some toilets and the bathroom floor?
A
caulking
B
wax seal
C
Both
D
no material
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What is an important material between some toilets and the bathroom floor?
caulking
wax seal
Both
no material
What is a zero liquid discharge system?
a system that precipitates metals out of factory wastewater by changing the pH
a system that uses ozone or hydrogen peroxide to oxidize organic chemicals in factory wastewater
a system that neutralizes acids or alkalis in factory wastewater
a system that evaporates water from factory wastewater so only solids remain
What happens when you flush a toilet?
The flush valve is lifted and water fills the bowl.
The flush valve is lowered and the water stops.
The flush valve is lowered and water fills the bowl.
None
What happens to sludge in a septic tank?
it dries out and form clumps that have to be shoveled out every few years
it floats on top of the liquid wastewater in the tank and needs to be pumped out every few years
it collects at the bottom of the tank and needs to be pumped out every few years
it flows through pipes in the septic tank to the drain field
What happens to liquid wastewater in a septic tank?
it evaporates through holes in the top of the septic tank
it is converted to sludge over time
it flows through pipes in the septic tank to the drain field
it drains through the bottom of the septic tank
What happens during the disinfection step at a wastewater treatment plant?
scum and sludge are separated from the liquid wastewater
treatment with chlorine or ultraviolet light to kill pathogens
liquid wastewater is mixed with air to help bacteria breakdown small particles of solid material
large solid things are screened out
What happens during the clarification or separation step at a wastewater treatmentplant?
large solid things are screened out
scum and sludge are separated from the liquid wastewater
treatment with chlorine or ultraviolet light to kill pathogens
liquid wastewater is mixed with air to help bacteria breakdown small particles of solid material
What element is added to water to prevent tooth decay?
None of these
Chlorine
Fluoride
Sugar
What causes acid rain?
carbon dioxide and methane given off by arctic soils as they warm in the spring
sulfur and nitrogen compounds from power plants, factories and motor vehicles
sulfur and nitrogen compounds given off by plants as the weather warms in the summer
carbon dioxide from power plants, factories and motor vehicles
What are the objectives of NUSP?
To address issues on sanitation & prepare city sanitation plan
To migrate urban inhabitants to safer places
To provide urban people with brooms to clean their houses
Wastewater released by houses is called
None
Sewage
Sludge
Both of them
Washing my hands should be:
None of the above
Mostly avoided
Only done when they look dirty
A habit that I do often
Viruses are:
Total Parasites
Complete saprophytes
Partial parasites
Partial saprophytes
The toilet tank acts as a
both
bucket
receptacle for waste
neither answer
The toilet shared between a group of households in a single building or plot is knownas:
Community toilet
Personal toilet
Shared toilet
The smallest form of bacteria is called:
Spirilla
Vibrio
Cocci
Bacilli
The maximum amount of forest covered area is present in:
Madhya Pradesh
Orissa
West Bengal
Himachal Pradesh
The main objective of a..................is to protect and promote human health by providing a clean environment and breaking the cycle of disease.
Sanitary System
Drainage System
Flush System
Toilet System
The conditions for bacteria to survive are
None
Food, temperature, stress, oxygen, acidity, time
Food , temperature, moisture, radiation, acidity, time
Food moisutre, acidity, oxygen, time, temperature
Strongest muscles of man are found in:
Leg
Wrist
Finger
Jaw