Autoclaves MCQs : This section focuses on the "Autoclaves" in Waste Water Engineering. These Multiple Choice Questions (MCQs) should be practiced to improve the Waste Water Engineering skills required for various interviews (campus interview, walk-in interview, company interview), placement, entrance exam and other competitive examinations.
Question 1
A waste autoclave is a form of solid waste treatment that uses heat, steam and pressure of an industrial autoclave in the processing of waste.
A. TRUE
B. FALSE
C. Can be true or false
D. Can not say
View Answer
Ans : A
Explanation: A waste autoclave is a form of solid waste treatment that uses heat, steam and pressure of an industrial autoclave in the processing of waste.
Question 2
Waste autoclaves process waste in?
A. batches
B. continuous-flow
C. Both A and B
D. None of the above
View Answer
Ans : C
Explanation: Waste autoclaves process waste either in batches or in continuous-flow processes.
Question 3
In batch processes, saturated steam is pumped into the autoclave at temperatures around?
A. 80 degree
B. 100 degree
C. 125 degree
D. 160 degree
View Answer
Ans : D
Explanation: In batch processes, saturated steam is pumped into the autoclave at temperatures around 160 degree.
Question 4
The autoclave process gives a ___________ pathogen and virus kill rate.
A. high
B. very high
C. low
D. very low
View Answer
Ans : B
Explanation: The autoclave process gives a very high pathogen and virus kill rate, although the fibrous products which come from the process are susceptible to bacteria and fungus as they are high in starch, cellulose and amino acids.
Question 5
____________ has developed and built a municipal solid waste treatment plant based on an autoclaves system
A. Ambiensys
B. Babcock
C. Estech
D. Ecohispanica
View Answer
Ans : D
Explanation: ECOHISPANICA has developed and built a municipal solid waste treatment plant based on an autoclaves system called Waste Cleaner. It is the first system able to process municipal solid waste (MSW) in continuous mode.
Question 6
Autoclaves are used in the medical applications to perform ______
A. Vulcanization
B. Heating
C. Sterilization
D. Cleaning
View Answer
Ans : C
Explanation: Autoclaves are used in medical applications to perform sterilization and in the chemical industry to cure coatings and vulcanize rubber for hydrothermal synthesis. There are other industrial applications also.
Question 7
What is the common temperature used in autoclaves?
A. 109 degree
B. 122 degree
C. 135 degree
D. 142 degree
View Answer
Ans : B
Explanation: Many autoclaves are used to sterilize the equipment and supplies by subjecting them to high-pressure saturated steam at 121 °C (249 °F) for around 15–20 minutes depending on the size of the load and the contents.
Question 8
Who invented the autoclave?
A. Pasteur
B. Arnold O. Beckman
C. Antonie van Leeuwenhoek
D. Charles Chamberland
View Answer
Ans : D
Explanation: Pasteur invented hot air oven. Charles Chamberland invented autoclave. Arnold O. Beckman invented pH meter. Antonie van Leeuwenhoek is considered as the father of microbiology.
Question 9
What is the inner surface of autoclaves made of?
A. Mild steel
B. Copper
C. Stainless steel
D. Aluminum
View Answer
Ans : C
Explanation: There is a horizontal and vertical type of autoclave. In vertical autoclaves, the whole autoclave is made of stainless steel and the outer surface is made of mild steel. Vertical autoclaves are used mainly for the sterilization process.
Question 10
When designed for sterilizing waste containing mostly liquids, a waste autoclave is known as an Effluent Decontamination System.
A. Yes
B. No
C. Can be yes or no
D. Can not say
View Answer
Ans : A
Explanation: Yes, When designed for sterilizing waste containing mostly liquids, a waste autoclave is known as an Effluent Decontamination System.