Part 1 Questions with 100% Correct
Answers | Verified | Latest Update.
Infectious hepatitis is an important, but poorly understood disease according to present
day knowledge. Which of the following statements is TRUE regarding this disease? -
Correct Answer-The agent occurs in both the blood & feces of patients
Outbreaks of many diseases have been traced to un-pasteurized milk as the source of
transmission. Which of the following diseases would NOT be transmitted this way? -
Correct Answer-Dengue
An outbreak of trachoma (pink eye) was traced to a public swimming pool. Which of the
following is the MOST likely cause? - Correct Answer-The use of community towels.
Which of the following areas would be LEAST closely associated with infant mortality
rate in a community? - Correct Answer-Auto Accidents
Office of Health Service regulations require bacteriological drinking water samples to be
analyzed by the laboratory within ______ hours after collection - Correct Answer-30
The GREATEST advantage offered by the membrane filter technique over the multiple
tube test is - Correct Answer-Results are obtained in a shorter time
The primary purpose of rapid & filtration & coagulation in the water treatment process is
to remove - Correct Answer-Turbidity
How many pounds of calcium hypochlorite (70% available chlorine) are necessary to
make 25 gallons of 1% chlorine solution? - Correct Answer-3
Recommended guidelines for protecting a water well against contamination would
include all EXCEPT which one of the following? - Correct Answer-The well should be
protected by a pump house
A water supply from which one of the following sources is the MOST likely to be safe for
human consumption - Correct Answer-Drilled well
The LEAST important public health reason for treating sewage is to prevent - Correct
Answer-Unsightly conditions.
Digestion of organic matter in a septic tank is accomplished primarily - Correct Answer-
By anaerobic bacteria.
, Problems with grease traps in restaurants are MOST often caused by - Correct Answer-
Lack of maintenance
Which one of the following would be the LEAST suspected cause of a tile field system
(absorption system) failure? - Correct Answer-Deterioration of the tile
Oxidation ponds operate on the principle of: - Correct Answer-Algae furnishing oxygen
for aerobic action
Water drawn from a swimming pool for filtration should come from - Correct Answer-
Both the surface & the deepest part of the pool
The recommended free chlorine residual to be maintained thru-out a water supply
distribution system is - Correct Answer-4 ppm
Cross-connections in plumbing should be eliminated because they - Correct Answer-
Have been responsible for numerous cases of diseases such as typhoid fever &
dysentery
The terms "vectors" and "vehicles" are - Correct Answer-Different because vehicles are
usually inanimate objects
Which of the following is the MOST effective fly control procedure? - Correct Answer-
Environmental Sanitation
A restaurant operator wishes to properly sanitize, using a 3 compartment sink. If 4%
bleach is used, how much must be added to the 12 gallon sink to get 100ppm chlorine
concentration - Correct Answer-3.84 ounces
Rodents may be economic factors of considerable magnitude. Which of following is
MOST significant economically - Correct Answer-They spoil or damage food & property
Although pasteurization kills pathogens but not all bacteria, (vegetative and spores) this
process can be considered as - Correct Answer-Disinfection
Which of the following is NOT a disinfectant? - Correct Answer-Cold
Which of the following would offer the SUREST method of trichinosis control? - Correct
Answer-Thorough cooking of all pork products
The temperature range considered safe for holding potentially hazardous foods as
stated in Chapter 23: - Correct Answer-40 F or below or 140 F or above
Which of the following basic equipment is NOT routinely needed by a food sanitarian? -
Correct Answer-Pyrometer & thermocouples