Steel balls are manufactured by

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Steel balls are manufactured by

A. Sintering

B. Casting

C. Cold heading

D. Spinning

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Pick out the wrong statement

A. Processing of thermosetting plastics is ideally done by injection moulding

B. Processing of thermoplastics is ideally done by compression moulding

C. Mass production of seamless pipes are done by electrical resistance welding (ERW)

D. Stretch forming is a process of cold drawing

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During sensible cooling of air, its wet bulb temperature

A. Decreases but dew point remains constant

B. Increases but dew point remains constant

C. Increases & the dew point decreases

D. Decreases & the dew point increases

Discuss this answer

Sacrificial anode method is used in the protection of pipelines which are buried underground. Sacrificial anode

A. Occurs higher in the electro-chemical series of metals

B. Is exemplified by magnesium plate

C. Is much cheaper than the cathodic base material to be guarded against corrosion

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

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The stress at which extension of the material takes place more rapidly as compared to the increase in load is termed as the __________ point of the material.

A. Elastic

B. Ultimate

C. Yielding

D. Breaking

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Which of the following has the least value of ultimate tensile strength (UTS)?

A. Medium carbon steel

B. High carbon steel

C. Cast iron

D. Wrought iron

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Common salt is produced from sea water in India generally by the __________ method.

A. Freeze drying

B. Solar evaporation

C. Electrolytic

D. None of these

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Corona discharge is related to the operation of a/an

A. Induction motor

B. Electrostatic precipitator

C. Fast breeder reactor

D. Magneto hydrodynamic generator (MHD)

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__________ is the most important element, which controls the physical properties of steel.

A. Manganese

B. Silicon

C. Carbon

D. Vanadium

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Yield strength of a material is determined by the __________ test.

A. Creep

B. Tension

C. Compression

D. Endurance

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Rankine cycle comprises of two isothermal and two __________ processes.

A. Isobaric

B. Polytropic

C. Isentropic

D. None of these

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Pick out the wrong statement.

A. For a pressure vessel to be classified as 'thin vessel', the ratio of wall thickness to mean radius is less than 0.1

B. For calculating forces and efficiency of riveted joint, either rivet diameter or rivet hole diameter is used in case of pressure vessel and in structural work

C. Longitudinal joint is normally made butt joint to maintain the circularity of the vessel

D. Maximum diameter of the opening provided in a pressure vessel, which does not require any compensation is 200 mm

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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

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Dryness fraction of dry steam is

A. 0

B. ∞

C. 1

D. 0.5

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Heat flow across a hollow sphere of inner radius 'r₁' and outer radius 'r₂' is directly proportional to

A. (r₂ - r₁)/r₁. r₂

B. r₁. r₂/(r₂- r₁)

C. (r₂ + r₁)/r₁. r₂

D. r₁. r₂/(r₂ + r₁)

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Use of economiser in a boiler plant reduces the fuel consumption for steam generation by about __________ percent.

A. 1

B. 10

C. 30

D. 50

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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

Discuss this answer

__________ are normally subjected to sub-zero treatment.

A. Highly stressed parts

B. Gauges or precision parts

C. Cold rolled sheets

D. Non machinable materials

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Coating thickness in case of galvanising of steel sheet generally corresponds to the deposition of __________ gms of zinc per of steel strip.

A. 5-10

B. 1000-1500

C. 120-500

D. 1500-3000

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The most abundant metal present in the earth's crust is;

A. Iron

B. Copper

C. Titanium

D. Aluminium

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Which of the following fastening devices has its both ends threaded?

A. Bolt

B. Stud

C. Set screw

D. Split nut

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A gas which is collected over water becomes moistened due to water vapor, exerts its own partial pressure at the gas temperature, which is termed as its

A. Aqueous tension

B. Saturated humidity

C. Vapor pressure

D. Absolute humidity

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What is the pH of distilled water?

A. 0

B. 1

C. 7

D. 14

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The main reducing agent in iron blast furnace is

A. Carbon dioxide

B. Carbon monoxide

C. Oxygen

D. Air

Discuss this answer

More than 95% of __________ is present in corundum.

A. SiO₂

B. Al₂O₃

C. CaSiO₂

D. MgO

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Difference at any instant between the value of the controlled variable and the set point is called the

A. Deviation

B. Derivative time

C. Error ratio

D. Differential gap

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Heating of ferromagnetic materials to a temperature above Curie temperature makes it

A. Insulator for heat & electricity transmission

B. Ferritic

C. Behave like paramagnetic materials

D. Superconductor

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Which of the following materials does not form adherent oxide film on surface?

A. Copper

B. Nickel

C. Aluminium

D. Gold & silver

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The concentration of (H⁺) ions is 4 x 10^-5 in a solution. Then pH of the solution will be (Given log 4 = 0.6)

A. 4.4

B. 5.6

C. 8.4

D. 2.4

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The refrigerant freon-12 is chemically

A. CCl₂F₂

B. CCl₃F

C. CClF₃

D. CCl₄F

Discuss this answer

Dephosphorization of molten pig iron is favoured by

A. Oxidising and basic slag

B. Reducing and basic slag

C. High activity co-efficient of phosphorous in metal

D. Oxidising and neutral slag

Discuss this answer

Accepted Answer

C. Cold heading

Steel balls are manufactured by

Correct Answer :

Show all Chemical Engineering Basics MCQ

Related Questions

Pick out the wrong statement

During sensible cooling of air, its wet bulb temperature

Sacrificial anode method is used in the protection of pipelines which are buried underground. Sacrificial anode

The stress at which extension of the material takes place more rapidly as compared to the increase in load is termed as the __________ point of the material.

Which of the following has the least value of ultimate tensile strength (UTS)?

Common salt is produced from sea water in India generally by the __________ method.

Corona discharge is related to the operation of a/an

__________ is the most important element, which controls the physical properties of steel.

Yield strength of a material is determined by the __________ test.

Rankine cycle comprises of two isothermal and two __________ processes.

Pick out the wrong statement.

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

Dryness fraction of dry steam is

Heat flow across a hollow sphere of inner radius 'r₁' and outer radius 'r₂' is directly proportional to

Use of economiser in a boiler plant reduces the fuel consumption for steam generation by about __________ percent.

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

__________ are normally subjected to sub-zero treatment.

Coating thickness in case of galvanising of steel sheet generally corresponds to the deposition of __________ gms of zinc per of steel strip.

The most abundant metal present in the earth's crust is;

Which of the following fastening devices has its both ends threaded?

A gas which is collected over water becomes moistened due to water vapor, exerts its own partial pressure at the gas temperature, which is termed as its

What is the pH of distilled water?

The main reducing agent in iron blast furnace is

More than 95% of __________ is present in corundum.

Difference at any instant between the value of the controlled variable and the set point is called the

Heating of ferromagnetic materials to a temperature above Curie temperature makes it

Which of the following materials does not form adherent oxide film on surface?

The concentration of (H⁺) ions is 4 x 10^-5 in a solution. Then pH of the solution will be (Given log 4 = 0.6)

The refrigerant freon-12 is chemically

Dephosphorization of molten pig iron is favoured by

Also checkout

Steel balls are manufactured by

Correct Answer :

Show all Chemical Engineering Basics MCQ

Related Questions

Pick out the wrong statement

During sensible cooling of air, its wet bulb temperature

Sacrificial anode method is used in the protection of pipelines which are buried underground. Sacrificial anode

The stress at which extension of the material takes place more rapidly as compared to the increase in load is termed as the __________ point of the material.

Which of the following has the least value of ultimate tensile strength (UTS)?

Common salt is produced from sea water in India generally by the __________ method.

Corona discharge is related to the operation of a/an

__________ is the most important element, which controls the physical properties of steel.

Yield strength of a material is determined by the __________ test.

Rankine cycle comprises of two isothermal and two __________ processes.

Pick out the wrong statement.

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

Dryness fraction of dry steam is

Heat flow across a hollow sphere of inner radius 'r1' and outer radius 'r2' is directly proportional to

Use of economiser in a boiler plant reduces the fuel consumption for steam generation by about __________ percent.

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

__________ are normally subjected to sub-zero treatment.

Coating thickness in case of galvanising of steel sheet generally corresponds to the deposition of __________ gms of zinc per of steel strip.

The most abundant metal present in the earth's crust is;

Which of the following fastening devices has its both ends threaded?

A gas which is collected over water becomes moistened due to water vapor, exerts its own partial pressure at the gas temperature, which is termed as its

What is the pH of distilled water?

The main reducing agent in iron blast furnace is

More than 95% of __________ is present in corundum.

Difference at any instant between the value of the controlled variable and the set point is called the

Heating of ferromagnetic materials to a temperature above Curie temperature makes it

Which of the following materials does not form adherent oxide film on surface?

The concentration of (H+) ions is 4 x 10-5 in a solution. Then pH of the solution will be (Given log 4 = 0.6)

The refrigerant freon-12 is chemically

Dephosphorization of molten pig iron is favoured by

Also checkout

Heat flow across a hollow sphere of inner radius 'r₁' and outer radius 'r₂' is directly proportional to

The concentration of (H⁺) ions is 4 x 10^-5 in a solution. Then pH of the solution will be (Given log 4 = 0.6)