In TIG welding, thoriated tungsten electrodes are used, because it

Question

In TIG welding, thoriated tungsten electrodes are used, because it

A. Has higher current carrying capacity

B. Has better electron emissivity

C. Is stronger than ordinary tungsten

D. Is easy to prepare

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Referring to the periodic table of elements, it is found that with increasing atomic number. The atomic size in the same

A. Period increases

B. Period decreases

C. Group increases

D. Both 'b' & 'c'

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Shampoos are commercially not available in the form of

A. Powder

B. Gaseous mixture

C. Solution

D. Emulsion

Discuss this answer

Fibrous fracture is normally encountered in the __________ materials.

A. Hard

B. Elastic

C. Ductile

D. Brittle

Discuss this answer

Silicon percentage in silicon steel used for electrical equipments is about

A. 1

B. 4.0

C. 8

D. 14

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Air standard Otto cycle is more efficient than the diesel cycle for the same

A. Heat addition & compression ratio

B. Heat addition & pressure

C. Compression ratio & pressure

D. Cylinder dimension & rpm

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The order of a chemical reaction

A. Can be determined only experimentally

B. Can be determined from the stoichiometry of the reaction

C. Cannot be zero

D. Can be fractional

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__________ of austenite decreases the hardenability in steel.

A. Fine grains

B. Coarse grains

C. Homogeneity

D. Dissolved elements (except cobalt)

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Hot working of lead is carried out at

A. 75°C

B. 373°K

C. 150°C

D. Room temperature

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On decreasing the grain size of a polycrystalline material, the property most likely to deteriorate is

A. Creep

B. Toughness

C. Tensile strength

D. Fatigue

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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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__________ has a negative co-efficient of linear expansion.

A. Iron

B. Copper

C. Rubber

D. Nickel

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Hot extrusion process is not used for making

A. Cast iron pipe for domestic water supply

B. Aluminium curtain rods

C. Stainless steel tubes used in furnitures

D. Any of these

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Hot dipping process is used for coating a low melting point metal (e.g. Pb, Sn, Zn) on iron, steel & copper having relatively higher melting points. Which of the following is not a hot dipping process?

A. Galvanising

B. Tinning

C. Sherardizing

D. None of these

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Which of the following phenomenon/ phenomena is/are diffusion controlled?

A. Dislocation climb

B. Cross-slip

C. Twinning

D. Recrystallisation

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Sand used to stop the green sand from sticking to the pattern is termed as the __________ sand.

A. Parting

B. Synthetic

C. Loam

D. Dry

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Which of the following is an acidic constituent of B.F. slag?

A.

B. FeO

C. MgO

D. CaO

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Percentage of argon (by volume) in dry atmospheric air is about

A. 0.09

B. 0.3

C. 0.57

D. 0.94

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Runge-Kutta method is used to solve a/an

A. Ordinary differential equation of nth order

B. Simultaneous non-linear equation

C. Linear differential equation

D. None of these

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Limestone is added in the blast furnace (during pig iron manufacture) to

A. Form slag by combining with impurities

B. Supply heat by undergoing exothermic reaction with impurities

C. Reduce the coke consumption

D. Reduce slag viscosity

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Fire refining process is employed in case of

A. Tin

B. Copper

C. Zinc

D. Aluminium

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The laminar boundary layer thickness in zero pressure gradient flow over a flat plate along the x-direction varies as x^0.5 while the thickness of turbulent boundary layer varies as (where, x = distance from the leading edge)

A. x^1.5

B. x^0.8

C. x^-1.5

D. x^-0.8

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The kinematic viscosity (in stoke) and the absolute/dynamic viscosity (in poise) are the same for __________ at room temperature.

A. Air

B. Water

C. Mercury

D. Alcohol

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Carnot cycle is also termed as the constant __________ cycle in thermodynamics.

A. Entropy

B. Pressure

C. Volume

D. Heat

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An alloy of Fe - 0.4 % C is

A. Cast iron

B. Hypo-eutectoid steel

C. Hyper-eutectoid steel

D. Eutectoid steel

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Strain hardening effect in metals subjected to cold working is due to the __________ mechanism.

A. Slip

B. Fracture

C. Winning

D. Dislocation

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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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An example of unsteady non uniform flow is the flow of liquid under pressure through a

A. Tapering pipe at constant flow rate

B. Tapering pipe at either decreasing or increasing flow rate

C. Long pipeline of constant diameter

D. None of these

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Out of the following, which will fracture most readity, when hit with a hard hammer?

A. Brass

B. Bronze

C. German silver

D. Cast iron

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Which of the following is not categorised as the ore agglomeration process?

A. Nodulising

B. Pelletising

C. Balling

D. Briquetting

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Theoretical volume of oxygen required for complete combustion of 1Nm³ of acetylene, in oxyacetylene welding is __________ Nm³.

A. 0.5

B. 1

C. 1/3

D. 2.5

Discuss this answer

Accepted Answer

B. Has better electron emissivity

In TIG welding, thoriated tungsten electrodes are used, because it

Correct Answer :

Show all Chemical Engineering Basics MCQ

Related Questions

Referring to the periodic table of elements, it is found that with increasing atomic number. The atomic size in the same

Shampoos are commercially not available in the form of

Fibrous fracture is normally encountered in the __________ materials.

Silicon percentage in silicon steel used for electrical equipments is about

Air standard Otto cycle is more efficient than the diesel cycle for the same

The order of a chemical reaction

__________ of austenite decreases the hardenability in steel.

Hot working of lead is carried out at

On decreasing the grain size of a polycrystalline material, the property most likely to deteriorate is

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

__________ has a negative co-efficient of linear expansion.

Hot extrusion process is not used for making

Hot dipping process is used for coating a low melting point metal (e.g. Pb, Sn, Zn) on iron, steel & copper having relatively higher melting points. Which of the following is not a hot dipping process?

Which of the following phenomenon/ phenomena is/are diffusion controlled?

Sand used to stop the green sand from sticking to the pattern is termed as the __________ sand.

Which of the following is an acidic constituent of B.F. slag?

Percentage of argon (by volume) in dry atmospheric air is about

Runge-Kutta method is used to solve a/an

Limestone is added in the blast furnace (during pig iron manufacture) to

Fire refining process is employed in case of

The laminar boundary layer thickness in zero pressure gradient flow over a flat plate along the x-direction varies as x^0.5 while the thickness of turbulent boundary layer varies as (where, x = distance from the leading edge)

The kinematic viscosity (in stoke) and the absolute/dynamic viscosity (in poise) are the same for __________ at room temperature.

Carnot cycle is also termed as the constant __________ cycle in thermodynamics.

An alloy of Fe - 0.4 % C is

Strain hardening effect in metals subjected to cold working is due to the __________ mechanism.

Propulsion of rocket follows from the

An example of unsteady non uniform flow is the flow of liquid under pressure through a

Out of the following, which will fracture most readity, when hit with a hard hammer?

Which of the following is not categorised as the ore agglomeration process?

Theoretical volume of oxygen required for complete combustion of 1Nm³ of acetylene, in oxyacetylene welding is __________ Nm³.

Also checkout

In TIG welding, thoriated tungsten electrodes are used, because it

Correct Answer :

Show all Chemical Engineering Basics MCQ

Related Questions

Referring to the periodic table of elements, it is found that with increasing atomic number. The atomic size in the same

Shampoos are commercially not available in the form of

Fibrous fracture is normally encountered in the __________ materials.

Silicon percentage in silicon steel used for electrical equipments is about

Air standard Otto cycle is more efficient than the diesel cycle for the same

The order of a chemical reaction

__________ of austenite decreases the hardenability in steel.

Hot working of lead is carried out at

On decreasing the grain size of a polycrystalline material, the property most likely to deteriorate is

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

__________ has a negative co-efficient of linear expansion.

Hot extrusion process is not used for making

Hot dipping process is used for coating a low melting point metal (e.g. Pb, Sn, Zn) on iron, steel & copper having relatively higher melting points. Which of the following is not a hot dipping process?

Which of the following phenomenon/ phenomena is/are diffusion controlled?

Sand used to stop the green sand from sticking to the pattern is termed as the __________ sand.

Which of the following is an acidic constituent of B.F. slag?

Percentage of argon (by volume) in dry atmospheric air is about

Runge-Kutta method is used to solve a/an

Limestone is added in the blast furnace (during pig iron manufacture) to

Fire refining process is employed in case of

The laminar boundary layer thickness in zero pressure gradient flow over a flat plate along the x-direction varies as x0.5 while the thickness of turbulent boundary layer varies as (where, x = distance from the leading edge)

The kinematic viscosity (in stoke) and the absolute/dynamic viscosity (in poise) are the same for __________ at room temperature.

Carnot cycle is also termed as the constant __________ cycle in thermodynamics.

An alloy of Fe - 0.4 % C is

Strain hardening effect in metals subjected to cold working is due to the __________ mechanism.

Propulsion of rocket follows from the

An example of unsteady non uniform flow is the flow of liquid under pressure through a

Out of the following, which will fracture most readity, when hit with a hard hammer?

Which of the following is not categorised as the ore agglomeration process?

Theoretical volume of oxygen required for complete combustion of 1Nm3 of acetylene, in oxyacetylene welding is __________ Nm3.

Also checkout

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

The laminar boundary layer thickness in zero pressure gradient flow over a flat plate along the x-direction varies as x^0.5 while the thickness of turbulent boundary layer varies as (where, x = distance from the leading edge)

Theoretical volume of oxygen required for complete combustion of 1Nm³ of acetylene, in oxyacetylene welding is __________ Nm³.