PROVISIONAL ANSWER KEY

Question Paper 0०९; 1/2022/0L
Category Code: 382/2020

Exam: Assistant Manager (Chemical)
Date of Test 2-0೩-2022

Department Kerala Ceramics Limited
Alphacode A

Question1:-Calculate the density and specific weight of Nitrogen at an absolute pressure of 1 MPa and a temperature 40
8-15.75 kg/m’ and 154.5 Nim?
B:-8.75 kg/m? and 85.83 ‏لوزلا‎
‎C-11.75 kg/m’ and 115.2 Nim?
D:-10.75 kg/m’ and 105.4 Nim?
Correct Answer: ‏رر‎
‎Question2::Which of the following factors does not contribute to the pressure drop in a pipeline ?
AcNelocity of fluid
B:-Size of pipe
CsLength of pipe and number of bends
D:-None of these
Correct Answer: ‏رر‎
‎Question3:-The no-slip condition of fluid in direct contact with a solid surface, stick to the surface is due to
ADensity
Bs Pressure
CViscosity
D:-Molecular weight
Correct Answer:- Option-C
Question4:-Hydraulic radius of 2 pipe is the ratio of
‘AcWetted perimeter to flow area
B:-Flow area to wetted perimeter
பரி area to square of wetted perimeter
D:-Square root of flow area to wetted perimeter
Correct Answer:- Option 8
೦050075: 70 handle smaller quantity of fluid at higher discharge pressure, use ‏ھ‎ ____ pump.
‘Ac-Reciprocating
B:-Centrifugal
ശിം
D:-Rotary vacuum
Correct Answer:- Option-A

Question6:-A U-tube manometer contains Kerosene, Mercury and Water, each at 21.2°C. The manometer is connected between two pipes (A and B) measured the pressure difference
between the pipe centerlines, is Py - 2, = 31.02 kPa, The mercury elevation difference z in manometer is (Density of Kerosene = 809 kg/m’, Mercury = 13550 kg/m’ , Water = 1000

11)

नणय m
8:0255 ೧
‏می‎ 302.6
D:0.325 m
Correct Answer:- ೦೧000
‘Question7:-Equation for pressure drop in a packed bed for laminar flow is given by the
‘A Kozzeny-Karman
B:-Blake-Plummer
വട

D:-Fanning friction factor