SANITARIAN WRITTEN EXAM PART 1. COMPLETE 2025 EXAM QUESTIONS AND ANSWERS WITH COMPLETE SOLUTION. GENUINE 2025 UPDATE.

SANITARIAN WRITTEN EXAM PART 1. COMPLETE 2025 EXAM QUESTIONS AND ANSWERS WITH COMPLETE SOLUTION. GENUINE 2025 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 The value of milk as a food is well known. Which of the following is NOT true? - CORRECT ANSWER - It contains adequate amounts of all vitamins Humans in an unventilated room have what following effect on the air: - CORRECT ANSWER - Temperature increases. The MOST effective means of disinfecting air in hospitals has been - CORRECT ANSWER - Combination of the above measures Of the following important activities at a school, which one is the sanitarians concern? - CORRECT ANSWER - Sanitation of the cafeteria, food handling, water supply, etc The disinfecting ability of chlorine is affected MOST by - CORRECT ANSWER - Temperature From the public health standpoint, the BEST floor covering in school kitchens & lunchrooms is - CORRECT ANSWER - Linoleum or plastic tile Which of the following areas of a hospital require the GREATEST degree of sanitation practices to prevent spread of communicable disease to hospital employees? - CORRECT ANSWER - Isolation room Those people MOST seriously affected by atmospheric pollution are - CORRECT ANSWER - The very young The elderly Those w/ heart diseases Those w/ lung diseases Inspections of water supplies used by interstate carriers are made by personnel of the: - CORRECT ANSWER - Office of Health Services