Heat release during phase change is observed in case of a/an

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Heat release during phase change is observed in case of a/an

A. Boiler

B. Condenser

C. Evaporator

D. All (A), (B) & (C)

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Which of the following approaches the ideal gas behaviour most closely?

A. Wet steam

B. Saturated steam

C. Superheated steam

D. Saturated water

Discuss this answer

Hydro-cyclone is a

A. Crusher

B. wet classifier

C. Dry classifier

D. Magnetic separator

Discuss this answer

Fine grained steels have

A. High brittleness

B. Higher tendency to distort

C. High ductility

D. None of these

Discuss this answer

A furnace is made of a refractory brick wall of thickness 0.5 metre and thermal conductivity 0.7 W/m.°K For the same temperature drop and heat loss, this refractory wall can be replaced by a layer of diatomaceous earth of thermal conductivity 0.14 W/m.K and thickness __________ metre.

A. 0.01

B. 0.1

C. 0.25

D. 0.5

Discuss this answer

Lead is poured into the joint between two __________ pipes.

A. Mild steel

B. Concrete

C. Cast iron

D. Asbestos cement

Discuss this answer

A high pressure boiler generates steam at a pressure greater than __________ kg/cm².

A. 10

B. 30

C. 50

D. 80

Discuss this answer

__________ pipe is the most suitable for carrying sanitary drainage.

A. Stainless steel

B. Reinforced cement concrete

C. Cast iron

D. Asbestos cement

Discuss this answer

Circular cross section machine parts which are symmetrical about the axis of rotation are made by hot

A. Piercing

B. Spinning

C. Drawing

D. Extrusion

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Which of the following is preferred for riveting?

A. Lap joint

B. Butt joint

C. Either (A) or (B)

D. Neither (A) nor (B)

Discuss this answer

Induced draft fans provided in large thermal power plant boilers have __________ blades.

A. Forward curved

B. Backward curved

C. Double curved

D. Radial or straight

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Shrinkage allowance on pattern is provided to compensate for shrinkage when the

A. Metal changes from liquid state to solid state at freezing temperature

B. Solid phase temperature drops from freezing temperature to the room temperature

C. Liquid metal temperature drops from pouring temperature to room temperature

D. Liquid metal temperature drops from pouring temperature to freezing temperature

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Material of construction of the electrode used in the electric resistance welding is

A. Stainless steel

B. Graphite

C. Copper

D. Steel

Discuss this answer

Pick out the wrong statement about coating/electroplating of metals.

A. Phosphate coating is used as an excellent base for paints & enamels

B. Phosphate coating is less corrosion resistant than chromate coating

C. The base metal to be electroplated is normally made the cathode of the electrolytic cell and coating metal is made the anode

D. Calorising is the process of coating steel with chromium

Discuss this answer

__________ is a non volatile film forming constituent of a paint.

A. Thinner

B. Dryer

C. Drying oil

D. None of these

Discuss this answer

The difference between gross & net calorific values of fuel is due to the

A. Sensible heat carried away by the flue gases

B. Heat carried away by the steam from the moisture content of the fuel

C. Heat lost by radiation

D. Heat carried away by steam from the combustion of hydrogen in the fuel

Discuss this answer

Coarse grained steels have

A. Low toughness

B. No tendency to distort

C. High density

D. Very high toughness

Discuss this answer

Carbon is present in the form of __________ in grey cast iron.

A. Spheroids

B. Nodular aggregates of graphite

C. Flakes

D. Cementite

Discuss this answer

With increase in compression ratio, the volumetric efficiency of air compressor

A. Increases

B. Decreases

C. Remain same

D. May increase or decrease (depends on the suction pressure)

Discuss this answer

One face of a furnace wall is at 1030°C and the other face is exposed to room temperature (30°C). If the thermal conductivity of furnace wall is 3 W. m^{- 1}. k^-1 and the wall thickness is 0.3 m, the maximum heat loss (in W/m) is

A. 100

B. 900

C. 9000

D. 10000

Discuss this answer

Nusselt number/Biot number varies

A. Inversely with thermal conductivity

B. Directly with heat transfer co-efficient

C. Directly with thermal conductivity

D. Inversely with the dimension of the solid

Discuss this answer

Minimum thermal efficiency of a steam boiler may be around __________ percent

A. 25

B. 45

C. 65

D. 20

Discuss this answer

Electrical conductivities of semi-conductors are of the order of __________ ohm/cm.

A. 10^-3

B. 10³

C. 10^-15

D. 10¹⁵

Discuss this answer

Absolute zero, pressure will occur, when the molecular momentum of the system becomes zero. A liquid will cease to exist as liquid at

A. High vacuum

B. Zero pressure

C. 0°K

D. Earth's centre

Discuss this answer

Enzymes belong to the category of

A. Proteins

B. Carbohydrates

C. Vitamins

D. Fats

Discuss this answer

__________ stress cannot be sustained by a fluid in equilibrium.

A. Shear

B. Tensile

C. Compressive

D. None of these

Discuss this answer

Absolute zero pressure can be attained at a temperature of

A. 0°C

B. 50°K

C. 0°R

D. None of these

Discuss this answer

Milk is fat dispersed in water. It is an example of

A. Suspension

B. Emulsion

C. Gel

D. Solution

Discuss this answer

Which of the following is a boiler accessory
i.e., not a boiler mounting?

A. Blow off cock

B. Feed check valve

C. Feed water pump

D. Stop valve

Discuss this answer

Superheating of steam is done at constant

A. Enthalpy

B. Entropy

C. Pressure

D. Volume

Discuss this answer

Which one can be directly solidified from gaseous state without entering into liquid state?

A. Helium

B. Oxygen

C. Carbon dioxide

D. None of these

Discuss this answer

Accepted Answer

B. Condenser

Heat release during phase change is observed in case of a/an

Correct Answer :

Show all Chemical Engineering Basics MCQ

Related Questions

Which of the following approaches the ideal gas behaviour most closely?

Hydro-cyclone is a

Fine grained steels have

A furnace is made of a refractory brick wall of thickness 0.5 metre and thermal conductivity 0.7 W/m.°K For the same temperature drop and heat loss, this refractory wall can be replaced by a layer of diatomaceous earth of thermal conductivity 0.14 W/m.K and thickness __________ metre.

Lead is poured into the joint between two __________ pipes.

A high pressure boiler generates steam at a pressure greater than __________ kg/cm².

__________ pipe is the most suitable for carrying sanitary drainage.

Circular cross section machine parts which are symmetrical about the axis of rotation are made by hot

Which of the following is preferred for riveting?

Induced draft fans provided in large thermal power plant boilers have __________ blades.

Shrinkage allowance on pattern is provided to compensate for shrinkage when the

Material of construction of the electrode used in the electric resistance welding is

Pick out the wrong statement about coating/electroplating of metals.

__________ is a non volatile film forming constituent of a paint.

The difference between gross & net calorific values of fuel is due to the

Coarse grained steels have

Carbon is present in the form of __________ in grey cast iron.

With increase in compression ratio, the volumetric efficiency of air compressor

One face of a furnace wall is at 1030°C and the other face is exposed to room temperature (30°C). If the thermal conductivity of furnace wall is 3 W. m^{- 1}. k^-1 and the wall thickness is 0.3 m, the maximum heat loss (in W/m) is

Nusselt number/Biot number varies

Minimum thermal efficiency of a steam boiler may be around __________ percent

Electrical conductivities of semi-conductors are of the order of __________ ohm/cm.

Absolute zero, pressure will occur, when the molecular momentum of the system becomes zero. A liquid will cease to exist as liquid at

Enzymes belong to the category of

__________ stress cannot be sustained by a fluid in equilibrium.

Absolute zero pressure can be attained at a temperature of

Milk is fat dispersed in water. It is an example of

Which of the following is a boiler accessory
i.e., not a boiler mounting?

Superheating of steam is done at constant

Which one can be directly solidified from gaseous state without entering into liquid state?

Also checkout

Heat release during phase change is observed in case of a/an

Correct Answer :

Show all Chemical Engineering Basics MCQ

Related Questions

Which of the following approaches the ideal gas behaviour most closely?

Hydro-cyclone is a

Fine grained steels have

A furnace is made of a refractory brick wall of thickness 0.5 metre and thermal conductivity 0.7 W/m.°K For the same temperature drop and heat loss, this refractory wall can be replaced by a layer of diatomaceous earth of thermal conductivity 0.14 W/m.K and thickness __________ metre.

Lead is poured into the joint between two __________ pipes.

A high pressure boiler generates steam at a pressure greater than __________ kg/cm2.

__________ pipe is the most suitable for carrying sanitary drainage.

Circular cross section machine parts which are symmetrical about the axis of rotation are made by hot

Which of the following is preferred for riveting?

Induced draft fans provided in large thermal power plant boilers have __________ blades.

Shrinkage allowance on pattern is provided to compensate for shrinkage when the

Material of construction of the electrode used in the electric resistance welding is

Pick out the wrong statement about coating/electroplating of metals.

__________ is a non volatile film forming constituent of a paint.

The difference between gross & net calorific values of fuel is due to the

Coarse grained steels have

Carbon is present in the form of __________ in grey cast iron.

With increase in compression ratio, the volumetric efficiency of air compressor

One face of a furnace wall is at 1030°C and the other face is exposed to room temperature (30°C). If the thermal conductivity of furnace wall is 3 W. m- 1. k-1 and the wall thickness is 0.3 m, the maximum heat loss (in W/m) is

Nusselt number/Biot number varies

Minimum thermal efficiency of a steam boiler may be around __________ percent

Electrical conductivities of semi-conductors are of the order of __________ ohm/cm.

Absolute zero, pressure will occur, when the molecular momentum of the system becomes zero. A liquid will cease to exist as liquid at

Enzymes belong to the category of

__________ stress cannot be sustained by a fluid in equilibrium.

Absolute zero pressure can be attained at a temperature of

Milk is fat dispersed in water. It is an example of

Which of the following is a boiler accessory i.e., not a boiler mounting?

Superheating of steam is done at constant

Which one can be directly solidified from gaseous state without entering into liquid state?

Also checkout

A high pressure boiler generates steam at a pressure greater than __________ kg/cm².

One face of a furnace wall is at 1030°C and the other face is exposed to room temperature (30°C). If the thermal conductivity of furnace wall is 3 W. m^{- 1}. k^-1 and the wall thickness is 0.3 m, the maximum heat loss (in W/m) is

Which of the following is a boiler accessory
i.e., not a boiler mounting?