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FAUJI FERTILIZER BIN QASIM LIMITED

TEST PAPER

NAME : _____________________________ Date : _______________________

P.No. :_____________________________ Marks :________________________

Designation :_____________________________ Invigilator Sign. :________________________

INSTRUCTIONS : 1) ATTEMPT ALL QUESTIONS.

2) EACH QUESTION CARRIES EQUAL MARKS

3) FOR EACH QUESTION TO ANSWER, CHOSE FROM DIFFERENT OPTIONS GIVEN. WRITE YOUR CHOICEOF ANSWER IN THE BLOCK AGAINST EACH QUESTION.

Q-1.___________ is the heaviest of ammonia, carbon dioxide and urea.

Ammonia Carbon dioxide Urea.

Q-2.Viscosity of oil increases with ___________ in temperature.

Increase Decrease

Q-3.Thrust bearing limits the amount of ______________

Radial movement Axial Movement

Both A & B None of A & B

Q-4.Percentage of nitrogen in ammonia is _______________.

88 14 82

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72

Q-5.Atmospheric pressure at sea level is ___________ pressure at hill station.

Higher than

Lower than Equal to

Q-6.Liquid level can be determined by measuring ______________ at the bottom of tank.

Pressure. Weight Density.

Q-7.The only best way to operate the furnace efficiently is to _____________.

Analyse the flue gases. Check color of flame. Measure fuel pressure. All of above . A,B & C.

Q-8.Steam turbine should ______________ when the steam exhaust valve is closed.

Never be started Be started.

Q-9.Purpose of steam N.G. reforming reaction is to produce ______________________

Oxygen Hydrogen Carbon monoxide None of above.

Q-10.Reforming reaction is favoured by _______________.

High temp. High pressure

Low Temp. Low Pressure. Both A & B Both A & D

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Q-11.The percentage of pure liquid caustic is generally.

50 40 100

70

Q-12.Oxygen in gas fired boiler exhaust is kept at ________________

2~3 % 20% 25% 50%

Q-13.Hardness of ground water is ________________ river water.

More Than Less Than Same as None of above

Q-14.Centrifugal pumps are designed for _________________

High flow requirement Low flow requirement High pressure requirement None of above.

Q-15.Natural gas is __________________

Heaver than air. Lighter than air Same in weight.

Q-16.Temperature of water in steam drum is ______________

Same as steam temp. Slightly higher than steam temp.

Slightly lower than steam temp. None of above.

Q-17.Moisture from air can be removed by _______________

Alumina balls

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Silica gel Both A&B None of A&B

Q-18.CBD of cooling tower is done to __________________

Maintain PH. Reduce temperature. None of above.

Q-19.Complete the equation :

2NH3 + CO2

NH2 COO NH4 NH2 CO NH2 NH2 CO NH3 None of above

Q-20.Ammonia synthesis reaction is ________________

Endothermic Exothermic Isothermal None of above.

Q-21.N2 and H2 are supplied for NH3 synthesis reaction at molar ratio of ______________________

2 : 1 1 : 3 3 : 1

1 : 2

Q-22.Density of water is _______________ the lube oil

Greater Than Less Than Equal to

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Q-23.There is greater percentage of power lo ss in the form of P in case of

Rota meter Orifice Meter Venturimeter Pitot tube.

Q-24. When the velocity of liquid or gas increases, its pressure will

Also increase Decrease Remains Same

Q-25.Combustion is a chemical reaction in which fuel reacts with _______________ to release heat.

Nitrogen Hydrogen Oxygen None of above.

Q-26.Explosive range of hydrogen is

4 ~ 40% 5 ~ 74% 35 ~ 75% None of above.

Q-27.Repeated testing has shown that 14.7 psi of pressure supports a column if mercury _________________ inches.

22.5 27 30 34.2

Q-28.In a barometer the height of mercury column indicates atmospheric pressure.

Q-29.In a thermometer the height of a column of mercury indicates temperature.

Q-30.Fluid flows because of pressure differential as electricity flows because of potential

difference

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Q-31.For same velocity of different fluids of different densities, flowing, in different pipes, mass flow

rate will be different

Q-32.Which impeller is the best likely to become clogged

Open Semi enclosed Closed

Q-33.Two centrifugal compressors operating in parallel will give advantage of

Increased discharge pressure. Increased flow. Not increased flow & pressure.

Q-34.A small pipe offers more resistance them a larger pipe.

True False.

Q-35.When the gas is at the tips of the impeller blades, it is at maximum ______________.

Pressure Velocity Volume None of Above.

Q-36.Vapour pressure of water at 100o C is _______________

13.6 Cm.Hg 100 Cm.Hg 76 Cm.Hg 100 N/Cm2

Q-37.Velocity meters are used primarily for measuring the flow rate

Liquid Gases.

Q-38.Orifice meter and venturi meter measures.

Point velocity Avg. velocity Pressure

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Max. Velocity.

Q-39.SCF is the volume a gas would occupy if it were measured at a standard pressure of ________________ psia anr a standard temp. of ______________- oC

14.7 25 0 , 0

Q-40.____________________ valve is used for controlling direction of flow.

Check valve Gate Valve Butter fly valve.

Q-41. The P determines the _ _______________ of fluid flows. Pressure Rate.

Q-42.Momentum is the tendency of an object to keep it once it is started.

Accelerating Moving

Q-43.The ________________ can change low voltage current to high voltage current.

Generator Transformer Turbine.

Q-44.Thermocouple measure temperature________________.

Physically Chemical Pneumatically

Electrically.Q-45.Which is not a parameter of fire triangle?

Continuous Combusting Fuel Some heat

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Q-46.Ignition of fuel oil at its flash point would cause

Continuous Combustion Momentary flame No combustion.

Q-47.Ignition of fuel oil at its fire point would cause.

Continuous Combustion Momentary flame No combustion.

Q-48 A pyrometer is used to measure

Pressure Flow Temperature All of Above.

Q-49.Mercury is _________________ water.

Lighter than Heavier then

Q-50.Compressing a gas increase its pressure and decrease its ______________

Temperature volume

Q-51.Steam gives off more heat when it is

Cooling Condensing .

Q-52.Which is the smallest unit of pressure.

PSI In. HG mm.Hg

Q-53.CO degree in Celsius scale area to ______________ degree on Kelvin

18 14

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10

Q-54.Static pressure depend upon.

Height of liquid Mass of liquid Weight of liquid All of above.

Q-55.Which of the following effect the separation of petroleum product

Temperature Pressure Feed rate All of the above

Q-56.When any liquid is allowed to evaporate, the temperature of the liquid will ________________.

Increase Decrease.

Q-57.To accomplish the most cooling in a cooling tower, a _______________ rate of evaporation isdesire.

High Low

Q-58.A _______________ can measure average temperature over many location.

Thermocouple Thermo pole Pyrometer.

Q-59.On the Fahrenheit scale, absolute zero, the ______________ possible temperature is _____________ oF.

Lowest, -492

Lowest, -460 Highest, -492

Q-60.The lowest possible temp. is the theoretical point called absolute zero where an object wouldcontain _____________heat energy, and there would be no molecular motion.

No

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Very little. High.

Q-61.The heat transfer rate _________________ on the temperature difference.

Depend Dont depend

Q-62.In parallel flow, when both fluids flow in the same direction, the not fluid _________________ beclosed below the highest temp. of the cooler fluid.

Can Cant

Q-63.Counter flow ______________ cooling a fluid to a temperature lower them the highest temp. ofthe cooling fluid.

Permits Prevent.

Q-64.At atmospheric condition ammonia is _________________

Gas Liquid

Solid

Q-65.Methane is main component of ________________

Natural gas CNG Both

Q-66.Which of the following in not an explosive.

Calcium ammonia nitrate Nitro-glycerine Cellulose Nitrate.

Q-67.Which is heavier at atmospheric condition.

Air Nitrogen

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Carbon monoxide.

Q-68.Catalyst is used to ___________________ rate of reaction

Increase

Decrease. Alter

Q-69.1 MM is an abbreviation for one ________________

Thousand Million Billion

Q-70.A foot valve is a

Back pressure valve A relief valve Direction control valve Pressure reducing valve.

Q-71.Charles low states that the volume of gas changes in direct proposition to changes in absolute ___________proportion.

Pressure Temperature.

Q-72.Oleum is represented is represented by formula.

H2SO3 H2SO4 H2S2O6 H2S2O7

Q-73.One HP is equal to 746 ___________________.

K. Watt Watt Joule

Q-74.Poison for platinum catalyst is _________________

Sulphur Phosphorous

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Arsenic Coke.

Q-75.The fluid that is flowing fastest is _____________ of the main stream

In the Center At the edge.

Q-76.A fluid can be excepted to absorb heat at a faster rate in ______________ flow.

Laminar Turbulent.

Q-77.The thicker the static film, the ________________ the heat transfer rate.

Greater

Less.

Q-78.The value parentage of oxygen in the air is ___________%

79 21 19 23

Q-79.Molecular weight of heavy water is _________________

18 19 20 None of above

Q-80.Liquefying a petroleum gas is ___________ change

Chemical Mechanical

PhysicalQ-81.Valves are used to control ________________

Level Pressure Flow rate

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All of above.

Q-82.Table salt solution in water has a pH _______________ 7

Equal to Above Below.

Q-83.Steam has good fire extinguishing property.

Yes No

Q-84.___________________ is the formation & collapse of vapour bubble in the liquid.

Hunting

Surging Cavitation Air Binding

Q-85._________________ convert the velocity of gas to increase the gas pressure.

Impeller Casing Diffuser Volute

Q-86.The purpose of an ejector is to remove _______________ from a vessel or line

Gas Air Both A & B

Q-87.Temperature indication on centrifugal scale and Fahrenheit scale is equal to ________________

40 -32 32 -40

Q-88.________________ signal moves faster

Pneumatic Electrical

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Hydraulic

Q-89.Heat transfer by conduction is described by _____________

Fouriers Law

Ficks Law Newtons Law of cooling Stefon Boltzman Law

Q-90.Heating of a steam turbine is started ____________ start of lube oil circulation.

Before After Both case A & B

Q-91.If pressure of saturated steam is let down (lowered). The resultant steam would be

_____________.

Saturated steam Super heated Steam Super saturated steam

Q-92.Which type of pump is equipped with PSV at discharge ___________

Positive displacement Centrifugal

Both

Q-93.The blow down line provided from the bottom of a steam drum is _______________ line

Continuous blow down Intermittent blow Down Can be used for both A & B

Q-94.Before handing over an exchanger on hydrogen gas service, for maintenance, it must be purgedwith _______________

Inert Gas Natural Gas Air

Q-95.Pressure gauge at outlet line of a catalyst bed reactor is showing more pressure than the gauge atinlet line of that reactor what does it indicate?

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High differential pressure Low differential pressure Faulty gauge

Q-96.Which fluid is introduced first in heat exchanger

Heating medium Cooling medium.

Q-97.Is cooling tower heat exchanger ?

Yes No

Q-98.Rapid flow of gas back and forth in the centrifugal compressor is called ______________

Surging Chocking None of A & B Both A&B

Q-99.Sleeves bearing mounted at the end of the shaft prevent

Axial movement Radial movement None of the Above.

Q-100.A gas leaving a compressor contains added energy usually in the form of increased _________________

Pressure & Velocity Pressure & Temperature. Velocity & Temperature.

Q-101.Water with a pH value of 7.9 is _________________

Acidic Alkaline

Neutral

Q-102.Pressure inside a furnace is ____________________ atmospheric in forced draft type of furnaces.

Higher Than

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Lower Than Equal to

Q-103.Heat is transferred from the heat source to the air by

Conduction Convection

Q-104.Cleaning, while the exchanger is operating is called _______________ maintenance

Q-105.Rate of conduction varies with temp. difference

True False

Q-106.Coupling need no lubrication

Rigid Flexible Both A & B

Q-107.Labyrinth seal ____________ touches the shaft.

Does Does not.

Q-108.When oil is used as a fuel, it must be changes from a liquid to aVAPORS

before being mixed

with air.

Q-109.Flash backs at individual burners may be corrected by adjusting the ______________ air doors.

Primary Secondary