REHS EXAM ACTUAL QUESTIONS WITH 100

REHS EXAM (ACTUAL / ) QUESTIONS WITH 100%

VERIFIED CORRECT ANSWERS | LATEST VERSION

• A factor or agent which increases the risk of cancer is known as a
• teratogen
• mutagen
• carcinogen
• fomite

carcinogen

• The four major causes of death among all age groups of Americans

include all of the following except.

• homicide
• accidents
• malignant neoplasms
• heart disease

homicide

• Which bacteria in large numbers can survive extended storage in

cheddar cheese?

a) Salmonella

b) Brucella sp. 1 / 4

c) Shigella

d) Clostridium perfringens

Salmonella

• Which of the following is non-toxic to aquatic organisms, a good

viricide, and adds oxygen to treated wastewater effluents?

• ozone
• calcium hypochlorine
• sulfur dioxide
• chlorine dioxide

ozone

• The typical limitation of use of the septic tank absorption field

system is due to

• cost
• land use considerations
• soil type and size requirements
• appearance

soil type and size requirements

• Which of the following is true about disposal of animal wastes? 2 / 4

• If wet manure is plowed under, fly eggs present will not hatch.
• Composting of manure takes advantage of the inclination that

larvae move out and away from moist manure in search of a dry place to pupate.

• Where a small number of animals are kept, the manure should be

collected once a week.

• Odors associated with the handling and disposal of these wastes do

not determine the disposal method or its location.composting of manure takes advantage of the inclination that larvae move out and away from moist manure in search of a dry place to pupate

• Resource recovery and reduction of solid wastes should start
• at the point of generation
• at the sanitary landfill
• in the home
• at the transfer station

at the point of generation

• ______can be recovered from refuse by burning it in a refractory

lined incineration or water-wall incinerator.

• glass
• aluminum
• ferrous metal 3 / 4

• energy

energy

• Incinerators are rated in terms of
• percent fuel capacity per day
• BTU's per day
• tons of burnable waste per day
• cubic feet of solid waste per day.

tons of burnable waste per day

• The three essentials for combustion in an incinerator are
• temperature, time and heat
• time, temperature and moisture
• temperature, heat and fuel
• time, temperature and turbulence

time, temperature and turbulence

• The second step of the combustion process in an incinerator

requires a high temperature of at least

• 1500o to 1600oF
• 1500o to 1800o F
• 1900o to 2000o F
• / 4