Ammonia leakage in the refrigeration system is detected by

Question

Ammonia leakage in the refrigeration system is detected by

A. Sulphur stick, which on detection gives white smoke

B. Using chemical reagents

C. Its smell

D. Soap solution

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Alumina, silica, lime and iron oxide are the basic raw material for the manufacture of Portland cement. The component of Portland cement which first hardens is

A.

B.

C.

D.

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Brass parts with high residual tensile stress at the surface are susceptible to season cracking (i.e. spontaneous cracking occuring on exposure to atmospheric corrosion), if its zinc percentage is more than

A. 5

B. 10

C. 20

D. 35

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The most economical channel section for the fluid flow is the one for which the discharge is maximum for a given cross-sectional area. Vertical velocity distribution in an open channel for laminar flow can be assumed to be

A. Parabolic

B. Hyperbolic

C. Straight line

D. None of these

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__________ of hard alloy and tool steel is done to make it easily machinable.

A. Case carburising

B. Tempering

C. Normalising

D. Annealing

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Name the safety device used to protect the boiler, when the water level falls below a minimum level.

A. Blow down valve

B. Blow off cock

C. Fusible plug

D. Safety valve

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Saturated steam at a pressure of 25 kg/cm² is throttled to attain 5 kg/cm². Then the outcoming steam will be

A. Wet

B. Saturated

C. Superheated

D. None of these

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With increase in annealing temperature, the following defect density decreases.

A. Vacancy

B. Dislocation

C. Grain boundary

D. All of these

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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)

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Fibrous fracture is normally encountered in the __________ materials.

A. Hard

B. Elastic

C. Ductile

D. Brittle

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In a counter flow heat exchanger, hot fluid enters at 170°C & leaves at 150°C, while the cold fluid enters at 50°C & leaves at 70°C. The arithmetic mean temperature difference in this case is __________ °C.

A. 20

B. 60

C. 120

D. ∞

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Which of the following metals reacts violently with water?

A. Mercury

B. Sodium

C. Calcium

D. Magnesium

Discuss this answer

Projection welding & stud welding is categorised as the __________ welding.

A. Pressure

B. Thermit

C. Resistance

D. Arc

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Nitriding of a steel part does not increase its

A. Grain size

B. Fatigue limit

C. Surface hardness

D. Wear resistance

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Annealing of white cast iron produces __________ iron.

A. Grey

B. Nodular

C. Malleable

D. Spheroidal

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Cementite is in the lamellar form in the __________ phase of steel.

A. Martenistic

B. Bainitic

C. Pearlitic

D. Ferritic

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Propulsion of rocket follows from the

A. Newton's second law of motion

B. Newton's third law of motion

C. Law of projectiles

D. Archimedes principle

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Corrosion of metals cannot be prevented by its

A. Tempering

B. Chromising

C. Aluminising

D. Alloying

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Ganister contains maximum percentage of

A. FeO

B. SiO2

C. MgO

D. MnO2

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In a boundary layer developed along the flow, the pressure decreases in the downstream direction. The boundary layer thickness in this case will

A. Decrease gradually

B. Increase gradually

C. Increase rapidly

D. Remain constant

Discuss this answer

Blow off cock is provided in steam boiler to

A. Guard the boiler in case of abnormal rise in steam pressure

B. Drain out water and sludge during its repair

C. Regulate the supply of water in boiler

D. Put out the fire in the furnace when the water level in the boiler falls to unsafe limit

Discuss this answer

Inertial forces are obtained, when the elastic forces are multiplied by __________ number.

A. Mach

B. Froude

C. Reynolds

D. Euler

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Ferromagnetic materials owe their properties to __________ inner sub-shells.

A. Completely filled

B. Partially filled

C. Equally filled

D. Vacant

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Which of the following are made out of the carbon steel having carbon content of 0.9 to 1%?

A. Small punches, broaches reamers and springs

B. Cutlery, screws, rivets and files

C. Mandrels, twist drills, small lathe tools and razors

D. Forgings like can shaft, structural steel plate, threading dies and drawing dies

Discuss this answer

Cast iron contains __________ percent carbon.

A. 2.5

B. 3.75

C. 4.75

D. 5.25

Discuss this answer

Removal of non-condensable from steam or other vapour is termed as the __________ process.

A. Condensation

B. Deaeration

C. Scavenging

D. Exhaust

Discuss this answer

Silicon in steel

A. Makes it usable in almost all magnetic circuits where alternating current is used

B. Increases its electrical resistivity and decreases the hysteresis loss

C. Is present upto 5% & 4% respectively when used in transformers & motor armatures

D. All 'a', 'b' & 'c'

Discuss this answer

Energy of the sun arises mainly from __________ reactions.

A. Fusion

B. Fission

C. Combustion

D. None of these

Discuss this answer

The property of material, by which a given amount of energy is absorbed by it without plastic deformation, is called the

A. Resilience

B. Toughness

C. Ductility

D. Impact strength

Discuss this answer

Reduction in the grain size reduces the __________ of the material.

A. Fatigue resistance

B. Tensile strength

C. Creep resistance

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

Discuss this answer

In extrusion of metals, which of the following statement is true?

A. Speed of the extruded material is same as that of ram speed

B. Redundant work is a function of the die angle

C. Relative motion between the billet surface and the container wall is always present

D. Hollow ram is used for indirect extrusion

Discuss this answer

Accepted Answer

A. Sulphur stick, which on detection gives white smoke

Ammonia leakage in the refrigeration system is detected by

Correct Answer :

Show all Chemical Engineering Basics MCQ

Related Questions

Alumina, silica, lime and iron oxide are the basic raw material for the manufacture of Portland cement. The component of Portland cement which first hardens is

Brass parts with high residual tensile stress at the surface are susceptible to season cracking (i.e. spontaneous cracking occuring on exposure to atmospheric corrosion), if its zinc percentage is more than

The most economical channel section for the fluid flow is the one for which the discharge is maximum for a given cross-sectional area. Vertical velocity distribution in an open channel for laminar flow can be assumed to be

__________ of hard alloy and tool steel is done to make it easily machinable.

Name the safety device used to protect the boiler, when the water level falls below a minimum level.

Saturated steam at a pressure of 25 kg/cm² is throttled to attain 5 kg/cm². Then the outcoming steam will be

With increase in annealing temperature, the following defect density decreases.

Which of the following is preferred for riveting?

Fibrous fracture is normally encountered in the __________ materials.

In a counter flow heat exchanger, hot fluid enters at 170°C & leaves at 150°C, while the cold fluid enters at 50°C & leaves at 70°C. The arithmetic mean temperature difference in this case is __________ °C.

Which of the following metals reacts violently with water?

Projection welding & stud welding is categorised as the __________ welding.

Nitriding of a steel part does not increase its

Annealing of white cast iron produces __________ iron.

Cementite is in the lamellar form in the __________ phase of steel.

Propulsion of rocket follows from the

Corrosion of metals cannot be prevented by its

Ganister contains maximum percentage of

In a boundary layer developed along the flow, the pressure decreases in the downstream direction. The boundary layer thickness in this case will

Blow off cock is provided in steam boiler to

Inertial forces are obtained, when the elastic forces are multiplied by __________ number.

Ferromagnetic materials owe their properties to __________ inner sub-shells.

Which of the following are made out of the carbon steel having carbon content of 0.9 to 1%?

Cast iron contains __________ percent carbon.

Removal of non-condensable from steam or other vapour is termed as the __________ process.

Silicon in steel

Energy of the sun arises mainly from __________ reactions.

The property of material, by which a given amount of energy is absorbed by it without plastic deformation, is called the

Reduction in the grain size reduces the __________ of the material.

In extrusion of metals, which of the following statement is true?

Also checkout

Ammonia leakage in the refrigeration system is detected by

Correct Answer :

Show all Chemical Engineering Basics MCQ

Related Questions

Alumina, silica, lime and iron oxide are the basic raw material for the manufacture of Portland cement. The component of Portland cement which first hardens is

Brass parts with high residual tensile stress at the surface are susceptible to season cracking (i.e. spontaneous cracking occuring on exposure to atmospheric corrosion), if its zinc percentage is more than

The most economical channel section for the fluid flow is the one for which the discharge is maximum for a given cross-sectional area. Vertical velocity distribution in an open channel for laminar flow can be assumed to be

__________ of hard alloy and tool steel is done to make it easily machinable.

Name the safety device used to protect the boiler, when the water level falls below a minimum level.

Saturated steam at a pressure of 25 kg/cm2 is throttled to attain 5 kg/cm2. Then the outcoming steam will be

With increase in annealing temperature, the following defect density decreases.

Which of the following is preferred for riveting?

Fibrous fracture is normally encountered in the __________ materials.

In a counter flow heat exchanger, hot fluid enters at 170°C & leaves at 150°C, while the cold fluid enters at 50°C & leaves at 70°C. The arithmetic mean temperature difference in this case is __________ °C.

Which of the following metals reacts violently with water?

Projection welding & stud welding is categorised as the __________ welding.

Nitriding of a steel part does not increase its

Annealing of white cast iron produces __________ iron.

Cementite is in the lamellar form in the __________ phase of steel.

Propulsion of rocket follows from the

Corrosion of metals cannot be prevented by its

Ganister contains maximum percentage of

In a boundary layer developed along the flow, the pressure decreases in the downstream direction. The boundary layer thickness in this case will

Blow off cock is provided in steam boiler to

Inertial forces are obtained, when the elastic forces are multiplied by __________ number.

Ferromagnetic materials owe their properties to __________ inner sub-shells.

Which of the following are made out of the carbon steel having carbon content of 0.9 to 1%?

Cast iron contains __________ percent carbon.

Removal of non-condensable from steam or other vapour is termed as the __________ process.

Silicon in steel

Energy of the sun arises mainly from __________ reactions.

The property of material, by which a given amount of energy is absorbed by it without plastic deformation, is called the

Reduction in the grain size reduces the __________ of the material.

In extrusion of metals, which of the following statement is true?

Also checkout

Saturated steam at a pressure of 25 kg/cm² is throttled to attain 5 kg/cm². Then the outcoming steam will be