Centrifuge MCQs : This section focuses on the "Centrifuge". These Multiple Choice Questions (MCQs) should be practiced to improve the Centrifuge skills required for various interviews (campus interview, walk-in interview, company interview), placement, entrance exam and other competitive examinations.
Question 1
Basket centrifuge can be used for liquid-liquid separations.
A. TRUE
B. FALSE
Question 2
Dorr-Oliver thickener is also called a _____
A. Continuous thickener
B. Raker
C. Continuous thickener & Raker
D. None of the mentioned
Question 3
In the centrifuge, heavier particles will have a larger radius.
A. TRUE
B. FALSE
Question 4
Sedimentation and centrifugation involve two miscible phases.
A. TRUE
B. FALSE
Question 5
Statement 1: The radius of neutral zone depends on the radius of the centrifuge.
A. True, False
B. True, True
C. False, False
D. False, True
Question 6
The area of neutral zone, in a centrifuge is __________
A. Between the heavy and light liquid
B. Next to the light liquid and away from the heavy liquid
C. Next to the heavy liquid and away from the light liquid
D. Above the heavy liquid and below the light liquid
Question 7
The compression zone in batch sedimentation is considered the overflow.
A. TRUE
B. FALSE
Question 8
The experimental details of the batch sedimentation experiment are comprehended by plotting which of the following two?
A. Height of interface against time
B. Concentration of solids against time
C. Settling rate vs slurry concentration
D. All of the mentioned
Question 9
Which food industry is centrifuge NOT used in?
A. Savory and snack foods
B. Sugar Industry
C. Dairy processing
D. None of the mentioned
Question 10
Which of the following does the terminal velocity of a particle NOT depend on?
A. Density of fluid and particle
B. Shape of the particle
C. Viscosity of the fluid
D. None of the mentioned
Question 11
Which of the following is an application of sedimentation in the food industry?
A. Effluent treatment plant
B. Settling of dust on fruits
C. Effluent treatment plant & Settling of dust on fruits
D. None of the mentioned
Question 12
Which of the following is true?
A. Last traces of alkali or charcoal are removed from oil using the centrifuge
B. Coconut cream obtained by centrifuge is not used in the cosmetic industry
C. All of the mentioned
D. None of the mentioned
Question 13
With respect to Sedimentation, the boundary between the thick suspension and solids will be decreasing and that between the clear liquid and the thick suspension will be increasing with the passage of time.
A. TRUE
B. FALSE