Deputy Manager (Production) Kerala PSC Previous Question Paper|Deputy Manager Kerala PSC Question paper 406/2022
Deputy Manager Travancore Sugars and Chemicals Ltd
Question Paper Code: 161/2023/OL
Category Code: 406/2022
Exam: Deputy Manager (Production)
Date of Test 13-11-2023
Department : Travancore Sugars and Chemicals Ltd
Deputy Manager Kerala PSC Question paper 406/2022
Question1:-Purging is done
A:-To recover heat
B:-To avoid accumulation of inert
C:-To increase the yield
D:-To control the concentration accurately
Correct Answer:- Option-B
Question2:-Molality of a 20% NaOH solution is
A:-20 M
B:-6.25 M
C:-0.00625 M
D:-2 M
Correct Answer:- Option-B
Question3:-Clapeyron equation relates
A:-Vapour pressure with temperature
B:-Vapour pressure with concentration
C:-Vapour pressure with density
D:-Vapour pressure with compressibility factor
Correct Answer:- Option-A
Question4:-When two immiscible liquids are mixed, the boiling point of resulting
mixture
A:-Is greater than the boiling point of both pure liquids
B:-Is less than the boiling point of more volatile liquid
C:-Lies between the boiling point of the pure liquids
D:-May be less than or greater than the boiling point of low volatile liquid
Correct Answer:- Option-B
Question5:-Fugacity and pressure are numerically equal when the gas is
A:-At high pressure
B:-At standard state
C:-Ideal state
D:-Low pressure
Correct Answer:- Option-C
Question6:-Entropy of perfect crystalline substance at absolute zero is
A:-Zero
B:-Negative
C:-Positive
D:-Can't say
Correct Answer:- Option-A
Question7:-Heat capacity of a gas is given by where is in kJ/kmol K
and T in K. Dimensions of constant a and b respectively are
A:-Dimensionless
B:-kJ/kmolK, kJ/kmol
C:-kJ/kmolK, kJ/kmolK
D:-kJ/kmol , kJ/kmol
Correct Answer:- Option-B
Question8:-Gross heating value of a fuel is obtained when water formed during
combustion is
A:-In the vapour state
B:-In the liquid state
C:-In the vapour state or liquid state
D:-Negligible
Correct Answer:- Option-B
Question9:-The point at which both liquid and gas phases are identical is called
A:-Triple point
B:-Saturation point
C:-Critical point
D:-Freezing point
Correct Answer:- Option-C
Question10:-Seeds containing 30% oil and rest inerts is extracted with hexane. The
underflow analysed 10% oil and 20% hexane. The percent recovery of oil is
A:-25%
B:-33.33%
C:-50%
D:-66.67%
Correct Answer:- Option-D
Question11:-The dimensions of kinematic viscosity is
A:-
B:-
C:-
D:-
Correct Answer:- Option-A
Question12:-Loss due to sudden contraction is proportional to
A:-Velocity head
B:-Density
C:-Viscosity
D:-Gravity
Correct Answer:- Option-A
Question13:-In laminar flow through a pipe, if the diameter of the pipe is reduced to
half, for a constant volumetric flow rate, pressure drop across the pipe
A:-Increases two times
B:-Decreases two times
C:-Decreases 16 times
D:-Increases 16 times
Correct Answer:- Option-D
Question14:-In Venturimeter pressure loss is
A:-more than orifice meter
B:-less than orifice meter
C:-same as orifice meter
D:-can't say
Correct Answer:- Option-B
Question15:-Cavitation in a centrifugal pump can be prevented by
A:-maintaining suction head equal to developed head
B:-maintaining suction head lower than the vapour pressure
C:-maintaining suction head sufficiently greater than the vapour pressure
D:-by proper sizing of suction line
Correct Answer:- Option-C
Question16:-Priming is required for
A:-Centrifugal pump
B:-Plunger pump
C:-Piston pumps
D:-All pumps
Correct Answer:- Option-A
Question17:-Hydraulic radius for a circular pipe of diameter D is given by
A:-D/4
B:-D/8
C:-4D
D:-8D
Correct Answer:- Option-A
Question18:-Drag is the force exerted by the
A:-Solid on the fluid in the opposite direction of flow
B:-Fluid on the solid in the opposite direction of flow
C:-Fluid on the solid in the direction of flow
D:-Solid on the fluid in the direction of flow
Correct Answer:- Option-C
Question19:-Viscosity increases with stress over time for
A:-Thixotropic fluid
B:-Rheopectic fluid
C:-Bingham plastic
D:-Newtonian fluid
Correct Answer:- Option-B
Question20:-Pressure drop across the fluidized bed with increase in expansion of
the bed
A:-Increases
B:-Decreases
C:-First increases and then decreases
D:-Remains constant
Correct Answer:- Option-D
Question21:-In a Tylor standard screen series, the ratio of the area of the openings
in any screen to that of the next smaller screen is
A:-1.41
B:-1.65
C:-1.73
D:-2
Correct Answer:- Option-D
Question22:-Crushing of sticky clay is done by
A:-Ball mill
B:-Jaw crusher
C:-Hammer mills
D:-Fluid energy mill
Correct Answer:- Option-C
Question23:-For marine impeller, the flow number may be considered constant and
equal to
A:-2100
B:-0.5
C:-4000
D:-0.97
Correct Answer:- Option-B
Question24:-The McCabe Δ L Law states that the
A:-The linear crystal growth rate does not depends on the crystal size
B:-The linear crystal growth rate depends on the crystal size
C:-Theoretical growth rate proportional to area
D:-Imperfections in the crystal size
Correct Answer:- Option-A
Question25:-In a rotary drum filter, the filtration rate
A:-Remains unaffected with change in drum speed
B:-Increases with increases in speed
C:-Decreases with increase in drum speed
D:-Increases linearly with increase in drum speed
Correct Answer:- Option-B
Question26:-A cyclone separator collection efficiency is a function of
A:-Particle size distribution of the feed
B:-Average particle size
C:-Increased centrifugal action
D:-Decreased centrifugal action
Correct Answer:-Question Cancelled
Question27:-Mass flow bins has the characteristics of
A:-Density can vary
B:-Product can remain in dead zones until complete cleanout of the system
C:-Flow is erratic
D:-Flow is uniform
Correct Answer:- Option-D
Question28:-Used to enlarge the storage bin opening and cause flow by breaking
up material bridges are known as
A:-Feeders
B:-Belt feeders
C:-Apron feeders
D:-Vibrating hoppers
Correct Answer:- Option-D
Question29:-As the distance between the heat source and the object receiving the
heat increases, the rate of heat transfer by radiation
A:-Increases
B:-Increases linearly
C:-Decreases
D:-Remains constant
Correct Answer:- Option-C
Question30:-Calculate the rate of heat transfer per unit area through a copper plate
45 mm thick whose one face is maintained at 350°C and the other face at 50°C.
Take thermal conductivity of copper as 370 W/m°C.
A:-0.455 MW/
B:-0.566 MW/
C:-2.466 MW/
D:-3.466 MW/
Correct Answer:- Option-C
Question31:-The colburn j factor for heat transfer is defined as
A:-
B:-
C:-
D:-
Correct Answer:- Option-C
Question32:-Peclet number is defined as
A:-Ratio between rate of heat transfer by convection to rate of heat transfer by
bulk flow
B:-Ratio between rate of heat transfer by bulk flow to rate of heat transfer by
convection
C:-Ratio between rate of heat transfer by bulk flow to rate of heat transfer by
conduction
D:-Ratio between momentum diffusivity to thermal diffusivity
Correct Answer:- Option-C
Question33:-For the nucleate boiling on a vertical flat plate, Jacob correlation is
given as
A:-
B:-
C:-
D:-
Correct Answer:- Option-D
Question34:-Film wise condensation
A:-is characterized by a thin liquid film forming over the entire surface
B:-is less common than drop wise condensation
C:-occurs on non wettable surfaces
D:-is charaterized by high heat transfer coefficients than that for drop wise
condensation
Correct Answer:- Option-A
Question35:-Assuming the sun to be a black body emitting radiation with maximum
intensity at , what is the surface temperature of the sun?
A:-20.09K
B:-10.02K
C:-273K
D:-303K
Correct Answer:- Option-B
Question36:-A cold fluid is heated from 40°C to 130°C by steam at 150°C. The
LMTD in parallel flow is
A:-Lower than the LMTD in counter flow
B:-Greater than the LMTD in counter flow
C:-Equal to the LMTD in counter flow
D:-Zero
Correct Answer:- Option-A
Question37:-The tube side heat transfer coefficient just at the entrance of tube is
A:-one
B:-zero
C:-infinity
D:-same as the average value of heat transfer coefficient for tube side
Correct Answer:- Option-C
Question38:-The steam economy of an evaporator is defined as
A:-the number of kilograms of steam consumed per hour
B:-the number of kilograms of steam consumed per kilogram of solvent
vaporized
C:-the number of kilograms of solvent vapourized per hour
D:-the number of kilograms of solvent vaporized per kilogram of steam fed to
the evaporator
Correct Answer:- Option-D
Question39:-The rate of diffusion in gases is about
A:-
B:-
C:-
D:-
Correct Answer:-Question Cancelled
Question40:-Which one of the following is not associated with absorption columns?
A:-Cavitation
B:-Channeling
C:-Flooding
D:-Scrubbing
Correct Answer:- Option-A
Question41:-A plot of partial pressure of the absorbed gas against temperature at
various constant volume is known as
A:-Polytherm
B:-Adsorption isobar
C:-Adsorption isostere
D:-None of the above
Correct Answer:- Option-C
Question42:-Pick out the correct statement:
A:-Fenske equation is used to calculate the minimum reflux ratio in distillation
B:-Fenske equation is used to calculate the optimum reflux ratioin distillation
C:-Fenske equation is used to calculate the minimum number of plates for
constant relative volatility
D:-Fenske equation is used to calculate the minimum number of plates for
multi component distillation
Correct Answer:- Option-C
Question43:-When the Lewis number is equal to 1
A:-Humid heat is almost equal to the specific heat
B:-Concentration boundary layer is present above the thermal boundary layer
C:-Psychrometric line is present above that of the adiabatic saturation line
D:-Psychromatic line is present below the adiabatic saturation line
Correct Answer:- Option-A
Question44:-In Liquid-Liquid extractors, the interface is set in an open section
A:-at the middle of the extractor
B:-at the top or bottom of the extractor
C:-at the inlet of dispersed phase
D:-at the inlet of the continuous phase
Correct Answer:- Option-B
Question45:-Removal of one element from a solid alloy is known as
A:-Selective leaching
B:-Adsorption
C:-Absorption
D:-Humidification
Correct Answer:- Option-A
Question46:-Which of the following terminology correspond to Freeze drying?
A:-Lyophilization
B:-Salt solution
C:-Short drying time
D:-Operates at high pressure
Correct Answer:- Option-A
Question47:-The point where the falling rate drying curve intercepts the x-axis
corresponds to
A:-Unbound moisture
B:-Equilibrium moisture
C:-Free moisture
D:-Critical moisture
Correct Answer:- Option-B
Question48:-In a McCabe-Thiele diagram of a binary distillation, the q-line for a feed
of Saturated Vapour
A:-will be a vertical line
B:-will be a horizontal line
C:-have slope infinity
D:-have slope positive
Correct Answer:- Option-B
Question49:-Volume of the reactor corresponding to 100% conversion is
A:-100 litres
B:-50 litres
C:-10 litres
D:-Infinity
Correct Answer:- Option-D
Question50:-For the reactions requiring large residence time, which one of the
following reactors is perferred?
A:-Continuous Stirred Reactor (CSTR)
B:-Plug Flow Reactors (PFR)
C:-Tubular reactors
D:-Combinations of CSTR and PFR
Correct Answer:-Question Cancelled
Question51:-Example for solid-solid reaction
A:-Coal
B:-Iron
C:-Glass
D:-Silver
Correct Answer:- Option-C
Question52:-Pick out the wrong statement from the following:
A:-Batch reactors operates under steady state
B:-Batch reactors have back mixing
C:-Batch reactors operates under unsteady state
D:-Batch reactors are used in pharmaceutical industries
Correct Answer:- Option-A
Question53:-In a plug flow reactor, under what condition, ideal plug flow will be
observed?
A:-Reynolds number = 2100
B:-Reynolds number < 2100
C:-Reynolds number infinity
D:-Reynolds number zero
Correct Answer:- Option-D
Question54:- in Michaelis-Menten equation is
A:-Bimolecular association rate constant of enzyme-substrate binding
B:-Substrate concentration at which the reaction velocity is half of the
maximum reaction velocity
C:-Unimolecular rate constant of the enzyme-substrate complex dissociating
to enzyme and substrate
D:-Unimolecular rate constant of the enzyme-substrate complex dissociating
to enzyme and product
Correct Answer:- Option-B
Question55:-When , the ratio of
A:-10/11
B:-1/2
C:-5/6
D:-11/10
Correct Answer:-Question Cancelled
Question56:-If the residence time obtained for a reactor by the RTD experiment is
less than that expected, it indicates
A:-Combination of PFR and CSTR
B:-CSTR
C:-PFR
D:-Presence of dead volume
Correct Answer:- Option-D
Question57:-One parameter in non-ideal PFR is
A:-Number of ideal tanks
B:-Dispersion co-efficient
C:-Residence time
D:-None of the above
Correct Answer:- Option-B
Question58:-For tanks in series model, the spread of the trace curve is to
A:-Cube of the distance from the tracer origin
B:-Square of the distance from the tracer origin
C:-1/square of the distance from the tractor origin
D:-Square root of the distance from the tracer origin
Correct Answer:- Option-D
Question59:-Introduction of an integral action in the forward path of a unity
feedback system results in a
A:-marginally stable system
B:-system with no steady state error
C:-system with reduced noise immunity
D:-system with better speed of response
Correct Answer:- Option-B
Question60:-Identify the correct statement from the following:
A:-Absolute humidity is expressed in percentage
B:-Warm air possesses less water vapor than cold air
C:-The higher the amount of water vapour, the higher the absolute humidity
D:-Saturated air has an absolute humidity of 100%
Correct Answer:- Option-C
Question61:-In measurement systems, which of the following are undesirable static
characteristics:
A:-Drift, static error and dead zone
B:-Reproducibility and non-linearity
C:-Sensitivity and accuracy
D:-Drift, Static error, dead zone and non-linearity
Correct Answer:- Option-D
Question62:-The primary controller in a cascade control system must always be
tuned:
A:-faster than the secondary
B:-using the Ziegler-Nichols method
C:-with greater filtering than the secondary
D:-after the secondary is tuned
Correct Answer:- Option-D
Question63:-What is the relation between bar and psi?
A:-1 bar = 1 psi
B:-1 bar = 201 psi
C:-1 bar = 20 psi
D:-1 bar = 14.5 psi
Correct Answer:- Option-D
Question64:-Phase lag of the frequency response of a second order system to a
sinusoidal forcing function
A:-approaches 180° asymptotically
B:-is 120°
C:-is 30°
D:-is 90°
Correct Answer:- Option-A
Question65:-Which of the following is not an advantage of laminar flow burner used
in flame photometry?
A:-Stable flame for analysis
B:-Noiseless
C:-Sample containing two or more solvents can be burned efficiently
D:-Efficient atomization of sample
Correct Answer:- Option-C
Question66:-The temperature of tempering oil baths maintained at 400°C during
heat treatment of steel is measured by a/an ___________ thermocouple.
A:-Iron-constantan
B:-Chromel-alumel
C:-Platinum-Platinum/Rhodium
D:-None of these
Correct Answer:- Option-A
Question67:-Cavitation in a control valve is caused by
A:-a laminar flow regime
B:-vibration in the packing
C:-the Von Karman effect
D:-pressure recovery
Correct Answer:- Option-D
Question68:-In a feed-back control system G and H denote open loop and close
loop transfer functions respectively. The output-input relationship is
A:-H / (1 + G)
B:-G / (1 + H)
C:-G / H
D:-H / G
Correct Answer:- Option-A
Question69:-Aerobic process of water treatment
A:-produces more sludge than anaerobic process
B:-produces less sludge than anaerobic process
C:-produces same amount of sludge as anaerobic process
D:-produces no sludge
Correct Answer:- Option-A
Question70:-The power development by a hydro plant is directly proportional to
A:-head of dam
B:-discharge of water
C:-product of discharge and head of water
D:-none of the above
Correct Answer:- Option-C
Question71:-Which type of fire extinguisher must not be used in case of electrical
base fire?
A:-Halon extinguisher
B:-Carbon chloride extinguisher
C:-Foam extinguisher
D:-Dry power extinguisher
Correct Answer:- Option-C
Question72:-Match the following:
List I List II
a. R.D.X. i. Cyclotetramethylene tetranitraamine
b. P.E.T.N. ii. 2, 4, 6 Trinitrotoluene
c. H.M.X. iii. Pentaerythritol teranitrate
d. T.N.T. iv. Cyclotrimethlene trinitra amine
a b c d
A:-i ii iii iv
B:-ii iii iv i
C:-iv i ii iii
D:-iv iii i ii
Correct Answer:- Option-D
Question73:-High COD to BOD ratio of an organic pollutant represents:
A:-Presence of free oxygen for the aerobic decomposition
B:-high biodegradability of the pollutant
C:-presence of toxic material in the pollutant
D:-low biodegradability of the pollutant
Correct Answer:- Option-D
Question74:-By using combined cycle steam and gas power plant
A:-specific fuel consumption can be decreased
B:-efficiency increased
C:-Specific fuel consumption can be decreased and efficiency increased
D:-None of the mentioned above
Correct Answer:- Option-C
Question75:-In fault tree analysis, event symbols describe the events that lead to
A:-Subsystem level failure
B:-Parts level failure
C:-System level failure
D:-Component level failure
Correct Answer:- Option-C
Question76:-The plume behavior which occurs in the super adiabatic condition with
light to moderate wind speed in the presence of large-scale thermal eddies are
known as
A:-Coning Plume
B:-Looping Plume
C:-Neutral Plume
D:-Fanning Plume
Correct Answer:- Option-B
Question77:-The operating temperature of a central receiver power tower of solar
plant is
A:-100°C - 200°C
B:-5000°C - 10000°C
C:-1000°C - 5000°C
D:-500°C - 1000°C
Correct Answer:- Option-D
Question78:-If you bypass an emergency shutdown (ESD) function for preventive
maintenance but have not properly defined mitigations, you have
A:-Weakened the hardware barrier
B:-Removed a hardware barrier
C:-Removed a human barrier
D:-None of the above
Correct Answer:- Option-B
Question79:-At point where dissolved oxygen is minimum
A:-Rate of reaeration equals rate of deoxygenation
B:-Rate of reaeration exceeds rate of deoxygenation
C:-Rate of deoxygenation exceeds rate of reaertion
D:-Rate of reaeration equals two times rate of deoxygenation
Correct Answer:- Option-C
Question80:-What is downwind turbine?
A:-Rotor is positioned at the three-quarters of the height of the tower
B:-Rotor of the turbine is in front of the unit
C:-Rotor is positioned at the bottom of the tower
D:-Rotor of the turbine is behind the unit
Correct Answer:- Option-D
Question81:-The type of polymerisation involved in the formation of Nylon-6 is
A:-Ring opening polymerisation
B:-Condensation Polymerisation
C:-Addition Polymerisation
D:-None of the above
Correct Answer:- Option-A
Question82:-Mostly Sulphuric Acid is manufactured by
A:-Girbatol process
B:-Frasch process
C:-Electric process
D:-Double contact double absorption process
Correct Answer:- Option-D
Question83:-Undesirable side reaction occured during the manufacture of Urea is
A:-Formation of
B:-Formation of
C:-Formation of
D:-None of the above
Correct Answer:- Option-C
Question84:-Strength of sugar solutions are expressed in
A:-
B:-
C:-
D:-
Correct Answer:- Option-C
Question85:-In petroleum refinery operations, __________ process is used for
converting paraffins and naphthenes to aromatics.
A:-Isomerisation
B:-Hydrocracking
C:-Catalytic reforming
D:-Alkylation
Correct Answer:- Option-C
Question86:-Select the correct combination that correctly matches the process in
group 1 with the entries in group 2:
Group 1 Group 2
P. Electric Process I. Pulp production
Q. Sulphite Process II. Phosphorus production
R. Solvay Process III. Sulpher Mining
S. Frasch Process IV. Soda ash
A:-P - III, Q - IV, R - II, S - I
B:-P - IV, Q - II, R - III, S - I
C:-P - II, Q - I, R - IV, S - III
D:-P - I, Q - IV, R - III, S - II
Correct Answer:- Option-C
Question87:-Polyvinyl chloride is prepared by
A:-Addition type kinetics
B:-Condensation polymerisation
C:-Reacting hydrochloric acid with polyethylene
D:-Reacting chlorine with polyethylene
Correct Answer:- Option-A
Question88:-Catalitic cracking is a
A:-Hydrogen addition process
B:-Breaking down of higher molecular weight componds to lower molecular
weight compounds with endothermic reaction
C:-Breaking down of higher molecular weight componds to lower molecular
weight compounds with exothermic reaction
D:-A coking process
Correct Answer:- Option-B
Question89:-Tripple superphosphate is prepared by the reaction of
A:-Phosphate rock with sulphuric acid
B:-Phosphate rock with phosphoric acid
C:-Phosphate rock with sulpher
D:-None of the above
Correct Answer:- Option-B
Question90:-In India which one of the industries produce elemental sulpher as a by
product?
A:-Petroleum refineries
B:-Paper and pulp industries
C:-Coal mining plants
D:-Sulphuric acid plants
Correct Answer:- Option-A
Question91:-If the interest rate is 12% and the compounding is done at the end of
every two months, the effective rate of return will be
A:-
B:-
C:-
D:-
Correct Answer:- Option-B
Question92:-Allocation of depreciation is uniform in
A:-Straight line method
B:-Sinking fund method
C:-Declining balance method
D:-Units of producing method
Correct Answer:- Option-A
Question93:-Quick ratio is defined as
A:-Liquid Assets / Current liabilities
B:-Current Assets / Current liabilities
C:-Working Assets / Current assets
D:-Liquid Assets / Total investment
Correct Answer:- Option-A
Question94:-At discounted cashflow rate of return
A:-Net Present Value = 0
B:-Net Present Value > 0
C:-Net Present Value < 0
D:-Can't Predict
Correct Answer:- Option-A
Question95:-If the investment at zero time is 10 lakhs and annual cash flow is Rs.
2,50,000, the payback period will be
A:-2 years
B:-2.5 years
C:-4 years
D:-3 years
Correct Answer:- Option-C
Question96:-At break even point
A:-Cash flow is zero
B:-Sales venue is zero
C:-Total cost is zero
D:-Gross Profit is zero
Correct Answer:- Option-D
Question97:-If the cost of a 100 MT chemical plant is 50 lakhs in the year 2005,
what is the cost of a 200 MT plant in the year 2010? Assume that the cost index in
2005 and 2010 were 450 and 540 respectively.
A:-90 lakhs
B:-120 lakhs
C:-60 lakhs
D:-100 lakhs
Correct Answer:- Option-A
Question98:-Which of the following is not correct?
A:-CPM uses deterministic model
B:-PERT uses probabilistic model
C:-CPM is used for projects that require research and development
D:-PERT is an event oriented technique
Correct Answer:- Option-C
Question99:-Which one of the following is not a current asset?
A:-Cash in hand
B:-Machinery
C:-Sundry debtors
D:-Bills receivable
Correct Answer:- Option-B
Question100:-Which one of the following is correct?
A:-Creditor is a person who owes money to the business
B:-Sundry debtor is a liability
C:-Closing stock will not appear in trial balance
D:-Secured loan is not a liability
Correct Answer:- Option-C
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