FILTRATION
TOP 10 MCQ
1. The fluid flows through the filter medium by virtue of [GPAT-2023 SHIFT-II]
(a) Pressure difference across the filter
(b) Temperature difference across the filter
(c) Volume difference across the filter
(d) Potential difference across the filter
2. The relation between emissive power of the surface and its absorptivity is given by [GPAT-2019]
(a) Stefan–Boltzmann Law
(b) Darcy’s Law
(c) Fourier’s Law
(d) Kirchhoff’s Law
COMMON DATA FOR QUESTION (83–85)
In a pharmaceutical industry, batch filtration of liquids where the proportion of solids to liquids is high is to be carried out. Complete recovery of solids is required. After filtration, the filtrate, which is corrosive, gives a crystalline product on evaporation. The liquid tends to deposit scales or crystals on the heating surface during evaporation. [GATE-2005]
3. The suitable filtration equipment is
(a) Plate and frame filter press
(b) Leaf filters
(c) Meta filters
(d) Membrane filters
4. The filter aid used in the above filtration is
(a) Sand
(b) Nylon fiber cloth
(c) Activated carbon
(d) Filter paper
5. A suitable evaporator is
(a) Falling film evaporator
(b) Forced circulation evaporator
(c) Vertical evaporator
(d) Horizontal evaporator
6. Edge filter also called as
(a) Plate and Frame
(b) Ring filter
(c) Meta filter
(d) Edge Runner Filter
7. Drying is done in drum filter mainly by
(a) Vacuum
(b) Pressure
(c) Surface Area
(d) All the above
8. The process of separating the solids whose concentration is less than 1% w/v in the solvent
(a) Filtration
(b) Ultra filtration
(c) Surface filtration
(d) Clarification
9. Which types of pressure filtration avoids foaming
(a) Positive
(b) Negative
(c) Elevated
(d) Graded
10. Filter aid should have
(a) Low specific gravity
(b) Less viscous
(c) High boiling point
(d) Low boiling point
ANSWER KEY
| 1-a | 2-d | 3-b | 4-c | 5-b | 6-c | 7-a | 8-c | 9-a | 10-a |
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