The pressure (kg/cm2 ) and temperature (°C) maintained in electrical desalters for crude oil are respectively (A) 10 and 120 (B) 1 and 200 (C) 50 and 250 (D) 10 and 300

The pressure (kg/cm2
) and temperature (°C) maintained in electrical
desalters for crude oil are respectively
(A) 10 and 120
(B) 1 and 200
(C) 50 and 250
(D) 10 and 300
by

1 Answer

Answer :

(B) 1 and 200
by

Related questions

Light oil whose major component is Benzol, is obtained by the distillation of crude tar in the temperature range of __________ °C. (A) 80-170 (B) 200-300 (C) 250-270

Description : Light oil whose major component is Benzol, is obtained by the distillation of crude tar in the temperature range of __________ °C. (A) 80-170 (B) 200-300 (C) 250-270

Last Answer : (A) 80-170

Operating condition in the electrical dehydrators for crude oil is about (A) 6.5 kgf/Cm2 & 95°C (B) 1 atm. & 110 °C (C) 20 kgf/cm2 & 110°C (D) 50 atm. and 150°C

Description : Operating condition in the electrical dehydrators for crude oil is about (A) 6.5 kgf/Cm2 & 95°C (B) 1 atm. & 110 °C (C) 20 kgf/cm2 & 110°C (D) 50 atm. and 150°C

Last Answer : (A) 6.5 kgf/Cm2 & 95°C

Pressure maintained in the high pressure primary tower of a three stage crude oil distillation system is about __________ kg/cm2 . (A) 1.5 (B) 3 (C) 6 (D) 12

Description : Pressure maintained in the high pressure primary tower of a three stage crude oil distillation system is about __________ kg/cm2 . (A) 1.5 (B) 3 (C) 6 (D) 12

Last Answer : (B) 3

Mercury electrolytic cell produces 50-70% NaOH solution. Its operating temperature is __________ °C. (A) 25 (B) 60-70 (C) 150-200 (D) 250-300

Description : Mercury electrolytic cell produces 50-70% NaOH solution. Its operating temperature is __________ °C. (A) 25 (B) 60-70 (C) 150-200 (D) 250-300

Last Answer : (B) 60-70

Exothermic condensation reaction of monochlorobenzene with chloral in presence of 20% oleum as catalyst produces DDT. The reaction temperature is maintained at __________ °C. (A) 15-30 (B) 90-100 (C) 250-300 (D) < 0

Description : Exothermic condensation reaction of monochlorobenzene with chloral in presence of 20% oleum as catalyst produces DDT. The reaction temperature is maintained at __________ °C. (A) 15-30 (B) 90-100 (C) 250-300 (D) < 0

Last Answer : (A) 15-30

The injection pressure of ic engine used on tractors is in range of kg/cm2 1. 0-6 2. 60-120 3. 120-200 4. 200-300

Description : The injection pressure of ic engine used on tractors is in range of kg/cm2 1. 0-6 2. 60-120 3. 120-200 4. 200-300

Last Answer : ans 3

In a tension test, the yield stress is 300 kg/cm2 , in the octahedral shear stress at the point is: (A) 100 kg/cm2 (B) 150 kg/cm2 (C) 200 kg/cm (D) 250 kg/cm2

Description : In a tension test, the yield stress is 300 kg/cm2 , in the octahedral shear stress at the point is: (A) 100 kg/cm2 (B) 150 kg/cm2 (C) 200 kg/cm (D) 250 kg/cm2

Last Answer : (A) 100 kg/cm2

Fusion zone in the electric furnace used for reduction of phosphate rock to elemental phosphorous is maintained at __________ °C. (A) 250-300 (B) 500-750 (C) 950-1050 (D) 1400-1450

Description : Fusion zone in the electric furnace used for reduction of phosphate rock to elemental phosphorous is maintained at __________ °C. (A) 250-300 (B) 500-750 (C) 950-1050 (D) 1400-1450

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Condensation polymerisation of caprolactam is carried out in the reactor maintained at a temperature of __________ °C for producing nylon- 6. (A) -20 to 25 (B) 50 to 75 (C) 100 to 150 (D) 250-280

Description : Condensation polymerisation of caprolactam is carried out in the reactor maintained at a temperature of __________ °C for producing nylon- 6. (A) -20 to 25 (B) 50 to 75 (C) 100 to 150 (D) 250-280

Last Answer : (D) 250-280

Injection pressure of fuel nozzle in diesel engine is a) 30-45 kg/cm2 b) 50-100 kg/cm2 c) 120-200 kg/cm2 d) 200 kg/cm2

Description : Injection pressure of fuel nozzle in diesel engine is a) 30-45 kg/cm2 b) 50-100 kg/cm2 c) 120-200 kg/cm2 d) 200 kg/cm2

Last Answer : c) 120-200 kg/cm2

Regeneration of molecular sieve requires it to be heated to a temperature of about __________ °C. (A) 80-120 (B) 200-300 (C) 600-800 (D) 1000-1100

Description : Regeneration of molecular sieve requires it to be heated to a temperature of about __________ °C. (A) 80-120 (B) 200-300 (C) 600-800 (D) 1000-1100

Last Answer : (D) 1000-1100

Traditionally, waste heat of low temperature range ________ has not been used for electricitygeneration despite efforts by ORC companies, mainly because the Carnot efficiency is rather low. a) 0-250 °C b) 0-150 °C c) 0-200 °C d) 0-120 °C

Description : Traditionally, waste heat of low temperature range ________ has not been used for electricitygeneration despite efforts by ORC companies, mainly because the Carnot efficiency is rather low. a) 0-250 °C b) 0-150 °C c) 0-200 °C d) 0-120 °C

Last Answer : 0-120 °C

90% of the caprolactam is converted to nylon-6 on its condensation polymerisation in the reactor maintained at a temperature of __________ °C. (A) -5 (B) 10-30 (C) 250-280 (D) 500-600

Description : 90% of the caprolactam is converted to nylon-6 on its condensation polymerisation in the reactor maintained at a temperature of __________ °C. (A) -5 (B) 10-30 (C) 250-280 (D) 500-600

Last Answer : (C) 250-280

Temperature and gage pressure maintained during the manufacture of hot SBR (styrene butadiene rubber) are (A) 50°C and 3 - 4 kg/cm2 (B) 50°C and 1 kgf/cm2 (C) 250°C and 10 kgf/cm2 (D) 250°C and 1 kgf/cm

Description : Temperature and gage pressure maintained during the manufacture of hot SBR (styrene butadiene rubber) are (A) 50°C and 3 - 4 kg/cm2 (B) 50°C and 1 kgf/cm2 (C) 250°C and 10 kgf/cm2 (D) 250°C and 1 kgf/cm

Last Answer : (A) 50°C and 3 - 4 kg/cm

Vacuum maintained in the vacuum distillation tower of the crude distillation plant is about __________ mm Hg (absolute). (A) 5-10 (B) 30-80 (C) 150-250 (D) 350-400

Description : Vacuum maintained in the vacuum distillation tower of the crude distillation plant is about __________ mm Hg (absolute). (A) 5-10 (B) 30-80 (C) 150-250 (D) 350-400

Last Answer : (B) 30-80

90% of the caprolactam is converted to nylon-6 on its condensation polymerisation in the reactor maintained at __________ °C. (A) < 0 (B) 10-30(C) 250-280 (D) 500-600

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Last Answer : (B) 10-30

A solid aluminium ball, when quenched in a water bath maintained at 40°C, cools down from 550°C to 450°C in 20 seconds. The expected temperature of the ball after next 20 seconds may be about __________ °C. (A) 370 (B) 340 (C) 320 (D) 300

Description : A solid aluminium ball, when quenched in a water bath maintained at 40°C, cools down from 550°C to 450°C in 20 seconds. The expected temperature of the ball after next 20 seconds may be about __________ °C. (A) 370 (B) 340 (C) 320 (D) 300

Last Answer : (A) 370

How much tomatoes are required for one kg tomato seeds ? (a) 50 – 300 kg (b) 300 — 350 kg(c) 160 — 210 kg (d) 200 — 250 kg

Description : How much tomatoes are required for one kg tomato seeds ? (a) 50 – 300 kg (b) 300 — 350 kg(c) 160 — 210 kg (d) 200 — 250 kg

Last Answer : (c) 160 — 210 kg

Flat rate parcel rates Flat Rate Parcel Boxes size Dimension of boxes (in mm) Weight (in Kg.) Tariff (in Rs.) Small - S 250*50*300 0 to 1 125 Medium - M 250*100*300 Above 1 to 2.5 200 Large - L 300*250*200 Above 2.5 to 5 400

Description : Flat rate parcel rates Flat Rate Parcel Boxes size Dimension of boxes (in mm) Weight (in Kg.) Tariff (in Rs.) Small - S 250*50*300 0 to 1 125 Medium - M 250*100*300 Above 1 to 2.5 200 Large - L 300*250*200 Above 2.5 to 5 400

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Which of the following situations can be approximated to a steady state heat transfer system? (A) A red hot steel slab (having outside surface temperature as 1300°C) exposed to the atmospheric air at 35°C (B) 10 kg of dry saturated steam at 8 kgf/cm2 flowing through a short length of stainless steel pipe exposed to atmospheric air at 35°C (C) Boiling brine kept in open vessel when the bottom surface temperature of the vessel is maintained constant at 180°C (D) A sub-cooled refrigerant liquid at 8°C flowing at the rate of 6 Kg/minute through a copper pipe exposed to atmospheric air at 35°C

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Last Answer : (B) 10 kg of dry saturated steam at 8 kgf/cm2 flowing through a short length of stainless steel pipe exposed to atmospheric air at 35°C

The stresses developed in concrete and steel in reinforced concrete beam 25 cm width and 70 cm effective depth, are 62.5 kg/cm2 and 250 kg/cm2 respectively. If m = 15, the depth of its neutral axis is (A) 20 cm (B) 25 cm (C) 30 cm (D) 35 cm

Description : The stresses developed in concrete and steel in reinforced concrete beam 25 cm width and 70 cm effective depth, are 62.5 kg/cm2 and 250 kg/cm2 respectively. If m = 15, the depth of its neutral axis is (A) 20 cm (B) 25 cm (C) 30 cm (D) 35 cm

Last Answer : Answer: Option C

Permissible compressive strength of M 200 concrete grade is (A) 100 kg/cm2 (B) 150 kg/cm2 (C) 200 kg/cm2 (D) 250 kg/cm2

Description : Permissible compressive strength of M 200 concrete grade is (A) 100 kg/cm2 (B) 150 kg/cm2 (C) 200 kg/cm2 (D) 250 kg/cm2

Last Answer : (C) 200 kg/cm2

Permissible compressive strength of M 200 concrete grade is (A) 100 kg/cm2 (B) 150 kg/cm2 (C) 200 kg/cm2 (D) 250 kg/cm2

Description : Permissible compressive strength of M 200 concrete grade is (A) 100 kg/cm2 (B) 150 kg/cm2 (C) 200 kg/cm2 (D) 250 kg/cm2

Last Answer : Answer: Option C

Permissible compressive strength of M 150 concrete grade is (A) 100 kg/cm2 (B) 150 kg/cm2 (C) 200 kg/cm2 (D) 250 kg/cm2

Description : Permissible compressive strength of M 150 concrete grade is (A) 100 kg/cm2 (B) 150 kg/cm2 (C) 200 kg/cm2 (D) 250 kg/cm2

Last Answer : Answer: Option C

Hot extrusion of aluminium is done in the temperature range of __________ °C. (A) 550-600 (B) 450-500 (C) 350-400 (D) 250-300

Description : Hot extrusion of aluminium is done in the temperature range of __________ °C. (A) 550-600 (B) 450-500 (C) 350-400 (D) 250-300

Last Answer : (C) 350-400

The vacuum maintained in vacuum distillation unit for reduced crude is about __________ mm Hg. (A) 1.2 (B) 12 (C) 120 (D) 700

Description : The vacuum maintained in vacuum distillation unit for reduced crude is about __________ mm Hg. (A) 1.2 (B) 12 (C) 120 (D) 700

Last Answer : (C) 120

Flash point of most vegetable oils is about __________ °C. (A) 50 (B) 100 (C) 200 (D) 300

Description : Flash point of most vegetable oils is about __________ °C. (A) 50 (B) 100 (C) 200 (D) 300

Last Answer : (C) 200

Hot water (0.01 m3 /min) enters the tube side of a counter current shell and tube heat exchanger at 80°C and leaves at 50°C. Cold oil (0.05 m3 /min) of density 800 kg/m3 and specific heat of 2 kJ/kg.K enters at 20°C. The log mean temperature difference in °C is approximately (A) 32 (B) 37 (C) 45 (D) 50

Description : Hot water (0.01 m3 /min) enters the tube side of a counter current shell and tube heat exchanger at 80°C and leaves at 50°C. Cold oil (0.05 m3 /min) of density 800 kg/m3 and specific heat of ... mean temperature difference in °C is approximately (A) 32 (B) 37 (C) 45 (D) 50

Last Answer : (A) 32

The principal stresses at a point are 100, 100 and -200 kgf/cm2 , the octahedral shear stress at the point is: (A) 100 kg/cm2 (B) 200 kg/cm2 (C) 300 kg/cm2(D) 400 kg/cm2

Description : The principal stresses at a point are 100, 100 and -200 kgf/cm2 , the octahedral shear stress at the  point is:  (A) 100 kg/cm2 (B) 200 kg/cm2 (C) 300 kg/cm2 (D) 400 kg/cm2

Last Answer : (A) 100 kg/cm2

A short column 20 cm × 20 cm in section is reinforced with 4 bars whose area of cross section is 20 sq. cm. If permissible compressive stresses in concrete and steel are 40 kg/cm2 and 300 kg/cm2 , the Safe load on the column, should not exceed (A) 4120 kg (B) 41,200 kg (C) 412,000 kg (D) None of these

Description : A short column 20 cm 20 cm in section is reinforced with 4 bars whose area of cross section is 20 sq. cm. If permissible compressive stresses in concrete and steel are 40 kg/cm2 and 300 kg/cm2 , the Safe load on ... should not exceed (A) 4120 kg (B) 41,200 kg (C) 412,000 kg (D) None of these

Last Answer : Answer: Option B

In favourable circumstances a 15 cm concrete cube after 28 days, attains a maximum crushing strength (A) 100 kg/cm2 (B) 200 kg/cm2 (C) 300 kg/cm2 (D) 400 kg/cm

Description : In favourable circumstances a 15 cm concrete cube after 28 days, attains a maximum crushing strength (A) 100 kg/cm2 (B) 200 kg/cm2 (C) 300 kg/cm2 (D) 400 kg/cm

Last Answer : Answer: Option D

Permissible compressive strength of M 300 concrete grade is (A) 100 kg/cm2 (B) 150 kg/cm2 (C) 200 kg/cm2 (D) 300 kg/cm2

Description : Permissible compressive strength of M 300 concrete grade is (A) 100 kg/cm2 (B) 150 kg/cm2 (C) 200 kg/cm2 (D) 300 kg/cm2

Last Answer : (D) 300 kg/cm2

The 28 days cube strength of mass concrete using aggregates of maximum size 5 cm for gravity dams should be (A) Between 150 to 300 kg/cm2 (B) Between 350 to 600 kg/cm2 (C) Between 150 to 500 kg/cm2 (D) Below 200 kg/cm2

Description : The 28 days cube strength of mass concrete using aggregates of maximum size 5 cm for gravity dams should be (A) Between 150 to 300 kg/cm2 (B) Between 350 to 600 kg/cm2 (C) Between 150 to 500 kg/cm2 (D) Below 200 kg/cm2

Last Answer : Answer: Option D

The minimum cube strength of concrete used for a pre-stressed member, is (A) 50 kg/cm2 (B) 150 kg/cm2 (C) 250 kg/cm2 (D) 350 kg/cm

Description : The minimum cube strength of concrete used for a pre-stressed member, is (A) 50 kg/cm2 (B) 150 kg/cm2 (C) 250 kg/cm2 (D) 350 kg/cm

Last Answer : Answer: Option D

Utilizing the answer to the previous problem, estimate the overall or average increase in temperature ( ΔT) of the concrete roof from the energy absorbed from the sun during a12hour day. Assume that all of the radiation absorbed goes into heating the roof. The specific heat of concrete is about 900 J/kg, and the density is about 2,300 kg/m3 .  a. 7.9 °C  b. 8.9°C  c. 9.9°C  d. 10.9°C formula: ΔQ = m c ΔT

Description : Utilizing the answer to the previous problem, estimate the overall or average increase in temperature ( ΔT) of the concrete roof from the energy absorbed from the sun during a12hour day. Assume that all of the radiation absorbed goes into ... °C  b. 8.9°C  c. 9.9°C  d. 10.9°C formula: ΔQ = m c ΔT

Last Answer : 7.9 °C

Optimum reaction temperature in steam reforming of naphtha is __________ °C. (A) 700 - 1000 (B) 300 - 450 (C) 1500-1700 (D) 100-200

Description : Optimum reaction temperature in steam reforming of naphtha is __________ °C. (A) 700 - 1000 (B) 300 - 450 (C) 1500-1700 (D) 100-200

Last Answer : (A) 700 - 1000

The temperature in the calcium carbide furnace is __________ °C. (A) 200-300 (B) 700-850 (C) 2000-2200 (D) 4000-4500

Description : The temperature in the calcium carbide furnace is __________ °C. (A) 200-300 (B) 700-850 (C) 2000-2200 (D) 4000-4500

Last Answer : (C) 2000-2200

What is the range of tempering temperature (°C) for most of the materials? (A) 75-100 (B) 200-300 (C) 350-450 (D) 500-600

Description : What is the range of tempering temperature (°C) for most of the materials? (A) 75-100 (B) 200-300 (C) 350-450 (D) 500-600

Last Answer : (B) 200-300

Steam pressures usually used in thermal power plants are (A) 5 kg/cm2 to 10 kg / cm2 (B) 50 kg/cm2 to 100 kg / cm2 (C) 110 kg/cm2 to 170 kg / cm2 (D) 200 kg/cm2 to 215 kg / cm2

Description : Steam pressures usually used in thermal power plants are (A) 5 kg/cm2 to 10 kg / cm2 (B) 50 kg/cm2 to 100 kg / cm2 (C) 110 kg/cm2 to 170 kg / cm2 (D) 200 kg/cm2 to 215 kg / cm2

Last Answer : Ans: C

If the maximum shear stress at the end of a simply supported R.C.C. beam of 6 m effective span is 10 kg/cm2 , the share stirrups are provided for a distance from either end where, is (A) 50 cm (B) 100 cm(C) 150 cm (D) 200 cm

Description : If the maximum shear stress at the end of a simply supported R.C.C. beam of 6 m effective span is 10 kg/cm2 , the share stirrups are provided for a distance from either end where, is (A) 50 cm (B) 100 cm (C) 150 cm (D) 200 cm

Last Answer : Answer: Option C

Fermentation of molasses to produce ethyl alcohol is done at __________ °C. (A) 20 - 30 (B) < - 5 (C) 100 - 150 (D) 250 - 300

Description : Fermentation of molasses to produce ethyl alcohol is done at __________ °C. (A) 20 - 30 (B) < - 5 (C) 100 - 150 (D) 250 - 300

Last Answer : (A) 20 - 30

The amount of coproporphyrins excreted per day in feces is about (A) 10–50 µgs (B) 100–150 µgs (C) 200–250 µgs (D) 300–1000 µgs

Description : The amount of coproporphyrins excreted per day in feces is about (A) 10–50 µgs (B) 100–150 µgs (C) 200–250 µgs (D) 300–1000 µgs

Last Answer : Answer : D

A officer undertakes to complete a job in 250 days. He employs 300 male for 50 days and they complete 1/2 of the work . He then reduces the number of male to 100, who work for 120 days, after which there are 20 days holidays. How many male must be employed for the remaining period to finish the work? a) 25 b) 50 c) 45 d) 35

Description : A officer undertakes to complete a job in 250 days. He employs 300 male for 50 days and they complete 1/2 of the work . He then reduces the number of male to 100, who work for 120 days, after which there ... male must be employed for the remaining period to finish the work? a) 25 b) 50 c) 45 d) 35

Last Answer : B 300 male in 50 days do = 1/2work 1 male in 1 day does = ½*1/50*1/300 work 100 male in 120 days do = ½ *1/50*1/300 *100*120 =2/5 work Total work done = ½ + 2/5 =(5+4)/10=9/10 ... is done in 50 days by 300 male 1/10 work is done in 60 days by =300*50*1*2/10*60 =50 male

A high temperature waste heat recovery unit consists of recovering waste heat at temperaturesgreater than _______. a) 200 °C b) 500 °C c) 300 °C d) 400 °C

Description : A high temperature waste heat recovery unit consists of recovering waste heat at temperaturesgreater than _______. a) 200 °C b) 500 °C c) 300 °C d) 400 °C

Last Answer : 400 °C

If the permissible compressive and tensile stresses in a singly reinforced beam are 50 kg/cm2 and 1400 kg/cm2 respectively and the modular ratio is 18, the percentage area At of the steel required for an economic section, is (A) 0.496 % (B) 0.596 % (C) 0.696 % (D) 0.796 %

Description : If the permissible compressive and tensile stresses in a singly reinforced beam are 50 kg/cm2 and 1400 kg/cm2 respectively and the modular ratio is 18, the percentage area At of the steel required for an economic section, is (A) 0.496 % (B) 0.596 % (C) 0.696 % (D) 0.796 %

Last Answer : Answer: Option C

Temperature and gage pressure maintained during the manufacture of cold SBR (styrene butadiene rubber) are (A) 5°C and 1 kgf/cm2 (B) - 20°C and 1 kgf/cm2 (C) 0°C and 1 kgf/cm2 (D) 0°C and 3 kgf/cm

Description : Temperature and gage pressure maintained during the manufacture of cold SBR (styrene butadiene rubber) are (A) 5°C and 1 kgf/cm2 (B) - 20°C and 1 kgf/cm2 (C) 0°C and 1 kgf/cm2 (D) 0°C and 3 kgf/cm

Last Answer : (A) 5°C and 1 kgf/cm

n a chemical factory where dyes are made, wet cake at 30 OC consisting of 60% moisture is put in a dryer to obtain an output having only 5% moisture, at atmospheric pressure. In each batch about 120 kgs of material is dried. a. The quantity of moisture removed per batch. b. What is the total quantity ( sensible & latent) of heat required to evaporate the moisture, if the latent heat of water is 540 kcal/kg at atmospheric conditions, Ignore heat absorbed by the solids c. Find the quantity of steam required for the drying process (per batch), if steam at 4 kg/cm2 is used for generating hot air in the dryer and the dryer efficiency is 80%. Latent heat of steam at 4 kg/cm2 is 520 kcal/kg.

Description : n a chemical factory where dyes are made, wet cake at 30 OC consisting of 60% moisture  is put in a dryer to obtain an output having only 5% moisture, at atmospheric pressure. In  each batch about 120 ... dryer and the dryer efficiency  is 80%. Latent heat of steam at 4 kg/cm2 is 520 kcal/kg.

Last Answer : Given that   Qty of material dried per batch - 120 Kgs  Moisture at inlet - 60% a. The quantity of moisture removed per batch.  Water quantity in a wet batch - 120 x 0.6 = 72 Kgs.  Quantity of bone dry ... - 48/0.95 = 50.5 Kgs.  Equivalent water in a dry batch - 50.5 - 48 = 2.5 Kgs.

The left face of a one dimensional slab of thickness 0.2 m is maintained at 80°C and the right face is exposed to air at 30°C. The thermal conductivity of the slab is 1.2 W/m.K and the heat transfer co-efficient from the right face is 10 W/m2 .K. At steady state, the temperature of the right face in °C is (A) 77.2 (B) 71.2 (C) 63.8 (D) 48.7

Description : The left face of a one dimensional slab of thickness 0.2 m is maintained at 80°C and the right face is exposed to air at 30°C. The thermal conductivity of the slab is 1.2 W/m.K and the heat transfer co-efficient from the ... temperature of the right face in °C is (A) 77.2 (B) 71.2 (C) 63.8 (D) 48.7

Last Answer : (D) 48.7

Recrystallisation temperature of steel is __________ °C. (A) 50 (B) 300 (C) 500 (D) 800

Description : Recrystallisation temperature of steel is __________ °C. (A) 50 (B) 300 (C) 500 (D) 800

Last Answer : (D) 800

high pressure boiler generates steam at a pressure greater than __________ kg/cm2. (A) 10 (B) 30 (C) 50 (D) 80

Description : high pressure boiler generates steam at a pressure greater than __________ kg/cm2. (A) 10 (B) 30 (C) 50 (D) 80

Last Answer : Option D