Kerala PSC Analyst Exam Previous Question

Kerala PSC Analyst-Chemical Testing Laboratory-Industries and Commerce Exam Question paper. Exam held on 2014.

1. The velocity at which the flow changes from one form to other is known as:

(A) Average Velocity

(B) Super Critical Velocity

(C) Critical Velocity

(D) Maximum Velocity

2. Sending part of the condensed liquid back to the column is called:

(A) Feed

(B) Distillate

(C) Rafinate

(D) Reflux

3. A rotating cylinder of perforated sheet metal or wire screen is called:

(A) Grizzlies

(B) Trommel

(C) Hummer Screen

(D) Cyclone Separator

4. The element which receives the information from the measuring devices and decides what action should be taken is called:

(A) Controller

(B) Sensor

(C) Transducer

(D) Transmitter

5. When an input variable of a system changes, there is a time interval during which no effect is observed on the output of the system is called:

(A) Dead time

(B) Peak time

(C) Interval time

(D) Effective time

6. In cyclone separators which liquid is commonly used for solid suspension:

(A) Alcohol

(B) Water

(C) Kerosene

(D) Benzene

7. The locus of the intersection of the upper operating line and lower operating line is called:

(A) Tie-line

(B) c-line

(C) d-line

(D) q-line

8. The point of minimum cross section from an orifice flow is called:

(A) Capillary

(B) Weirs

(C) Vena contracta

(D) Ventury

9. The efficiency of a single plate based on vapour-phase composition is called:

(A) Single plate efficiency

(B) Overall plate efficiency

(C) Column efficiency

(D) Murphree efficiency

10. Fine grinders are defined as those machines that can be made to give a product that will pass:

(A) 100 mesh screen

(B) 200 mesh screen

(C) 300 mesh screen

(D) 400 mesh screen

11. The most common digital converters used widely are:

(A) 8 bit or 12 bit

(B) 10 bit or 14 bit

(C) 15 bit or 20 bit

(D) 20 bit or 25 bit

12. Which maintenance is naturally undertaken before the interruption of production and major breakdown?

(A) Preventive maintenance

(B) Predictive maintenance

(C) Annual maintenance

(D) Breakdown maintenance

13. Rittinger's law states that the energy required for the crushing process is proportional to:

(A) The mass

(B) The surface sheared

(C) The volume

(D) The density

14. The most widely used settling apparatus is:

(A) Extractor

(B) Distiller

(C) Dorr agitator

(D) Dorr thickner

15. The device used to control the rate of flow of fluids in pipe lines are called:

(A) Pipe fittings

(B) Nipples

(C) Valves

(D) Plugs

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