Though tin occurs lower than iron in the electrochemical series, yet it is coated on steel for corrosion protection, because of its

Question

Though tin occurs lower than iron in the electrochemical series, yet it is coated on steel for corrosion protection, because of its

A. Lower cost

B. Abundant availability

C. Resistance to vegetable acids as the tin plate are commercially used in 'canning' industry

D. None of these

Share this question with your friends

Show all Chemical Engineering Basics MCQ

Comment

Elimination of brittleness resulting from welding of saw blades is done by __________ of the welded portion.

A. Annealing

B. Toughening

C. Work hardening

D. Tempering

Discuss this answer

Silicon percentage in silicon steel used for electrical equipments is about

A. 1

B. 4.0

C. 8

D. 14

Discuss this answer

Tip of the match stick contains a mixture of

A. K + S

B. K + S + K₂Cr₂O₇

C. S + K₂Cr₂O₇ + White P

D. None of these

Discuss this answer

Starting friction is low in case of the __________ lubrication.

A. Boundary

B. Hydrodynamic

C. Hydrostatic

D. Mixed/semi-fluid

Discuss this answer

The most serious manufacturing defect from fracture toughness point of view is

A. Surface roughness

B. Pores

C. Spherical inclusion

D. Crack

Discuss this answer

Maximum permissible air velocity in pipelines is about __________ metre/second.

A. 5

B. 10

C. 20

D. 40

Discuss this answer

The most important function of a washer is to provide bearing area and washers are normally specified by their hole diameters. The diameter of washer as compared to the nut is

A. More

B. Less

C. Same

D. More but less than the diameter of bolt

Discuss this answer

Function of fusible plug in a boiler is to

A. Drain out water and sludge from the boiler during repair

B. Put off fire in the furnace when water level in the boiler falls to unsafe limit

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

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

Discuss this answer

About __________ ton of coke is required in a cupola to produce one ton of casting.

A. 0.03

B. 0.3

C. 0.8

D. 1.5

Discuss this answer

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

Discuss this answer

Unit of surface tension in S.I. unit is

A. Watt/m

B. Joule/

C. Newton/

D. Joule/m

Discuss this answer

__________ of grey cast iron produces white cast iron.

A. Tempering

B. Rapid heating

C. Rapid cooling

D. Slow cooling

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

Which of the following are considered applications of ultrasonic testing?

A. Determination of elastic constant

B. Detection of defects in metal

C. Measurement of material thickness

D. None of the above

Discuss this answer

__________ property of steel increases by addition of large amount of silicon in it.

A. Mechanical

B. Machining

C. Magnetic

D. Refractory

Discuss this answer

Calorific value of __________ are almost same.

A. Lignite & anthracite coal

B. Lignite & coal gas

C. Petrol & diesel

D. Coal gas & natural gas

Discuss this answer

Consider an ideal solution of components A and B. The entropy of mixing per mole of an alloy containing 50% B is

A. R ln 2

B. -R ln 2

C. 3 R ln 2

D. -3R ln 2

Discuss this answer

The atmospheric temperature during melting of ice/snow (in the atmosphere)

A. Decreases

B. Increases

C. Remain same

D. May increase or decrease; depends on the altitude where snow melts

Discuss this answer

Transition from laminar flow to turbulent flow in fluid flow through a pipe does not depend upon the

A. Length of the pipe

B. Diameter of the pipe

C. Density of the fluid

D. Velocity of the fluid

Discuss this answer

Galvanic corrosion cannot be prevented by

A. Cathodic protection

B. Anodic protection

C. Usage of largest possible anodic area

D. Any one of these

Discuss this answer

In Imperial Smelting Process for extraction of zinc, zinc vapour thus produced is quenched in the external condenser by the use of the following:

A. Jet of water at high pressure

B. Blast of air

C. Mixture of water and air

D. Rain of molten lead

Discuss this answer

Work done by a/an __________ process is determined by ∫p. dv

A. Adiabatic

B. Quasi-static

C. Isothermal

D. Isentropic

Discuss this answer

Which of the following is not an ore of copper?

A. Cryolite

B. Azurite

C. Chalcopyrite

D. Malachite

Discuss this answer

Which of the following pairs is not correctly matched?

A. Uranium - 233 : Fertile material

B. Binding energy : Mass defect

C. Scattering: Absorption cross-section

D. Number of nucleons : Mass number

Discuss this answer

The highest stress that a material can withstand for a specified length of time without excessive deformation is called the __________ strength.

A. Creep

B. Endurance

C. Fatigue

D. None of these

Discuss this answer

Identify the correct statement.

A. Sphlerite is zinc oxide

B. The first law of the thermodynamics is stated as δE = δQ - δW

C. Lead can be produced in a blast furnace

D. T. ferrooxidans is a fungus that can be used for leaching chalcopyrite

Discuss this answer

Quartz is a __________ material.

A. Diamagnetic

B. Ferromagnetic

C. Ferroelectric

D. Piezoelectric

Discuss this answer

Limestone addition in the blast furnace is done to flux __________ present in the raw materials.

A. SiO2

B. Al2O3

C. MnO2

D. P

Discuss this answer

Co-efficient of performance of a Carnot cycle refrigerator operating between - 23°C and + 27°C is

A. 3

B. 5

C. 0.5

D. 1.5

Discuss this answer

Rain drops falling through atmospheric air attain limited terminal velocity, because of

A. Upward thrust due to air

B. Viscous force exerted by air

C. Surface tension effects of water

D. Force of gravity

Discuss this answer

Accepted Answer

C. Resistance to vegetable acids as the tin plate are commercially used in 'canning' industry

Though tin occurs lower than iron in the electrochemical series, yet it is coated on steel for corrosion protection, because of its

Correct Answer :

Show all Chemical Engineering Basics MCQ

Related Questions

Elimination of brittleness resulting from welding of saw blades is done by __________ of the welded portion.

Silicon percentage in silicon steel used for electrical equipments is about

Tip of the match stick contains a mixture of

Starting friction is low in case of the __________ lubrication.

The most serious manufacturing defect from fracture toughness point of view is

Maximum permissible air velocity in pipelines is about __________ metre/second.

The most important function of a washer is to provide bearing area and washers are normally specified by their hole diameters. The diameter of washer as compared to the nut is

Function of fusible plug in a boiler is to

About __________ ton of coke is required in a cupola to produce one ton of casting.

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

Unit of surface tension in S.I. unit is

__________ of grey cast iron produces white cast iron.

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 are considered applications of ultrasonic testing?

__________ property of steel increases by addition of large amount of silicon in it.

Calorific value of __________ are almost same.

Consider an ideal solution of components A and B. The entropy of mixing per mole of an alloy containing 50% B is

The atmospheric temperature during melting of ice/snow (in the atmosphere)

Transition from laminar flow to turbulent flow in fluid flow through a pipe does not depend upon the

Galvanic corrosion cannot be prevented by

In Imperial Smelting Process for extraction of zinc, zinc vapour thus produced is quenched in the external condenser by the use of the following:

Work done by a/an __________ process is determined by ∫p. dv

Which of the following is not an ore of copper?

Which of the following pairs is not correctly matched?

The highest stress that a material can withstand for a specified length of time without excessive deformation is called the __________ strength.

Identify the correct statement.

Quartz is a __________ material.

Limestone addition in the blast furnace is done to flux __________ present in the raw materials.

Co-efficient of performance of a Carnot cycle refrigerator operating between - 23°C and + 27°C is

Rain drops falling through atmospheric air attain limited terminal velocity, because of

Also checkout

Though tin occurs lower than iron in the electrochemical series, yet it is coated on steel for corrosion protection, because of its

Correct Answer :

Show all Chemical Engineering Basics MCQ

Related Questions

Elimination of brittleness resulting from welding of saw blades is done by __________ of the welded portion.

Silicon percentage in silicon steel used for electrical equipments is about

Tip of the match stick contains a mixture of

Starting friction is low in case of the __________ lubrication.

The most serious manufacturing defect from fracture toughness point of view is

Maximum permissible air velocity in pipelines is about __________ metre/second.

The most important function of a washer is to provide bearing area and washers are normally specified by their hole diameters. The diameter of washer as compared to the nut is

Function of fusible plug in a boiler is to

About __________ ton of coke is required in a cupola to produce one ton of casting.

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

Unit of surface tension in S.I. unit is

__________ of grey cast iron produces white cast iron.

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 are considered applications of ultrasonic testing?

__________ property of steel increases by addition of large amount of silicon in it.

Calorific value of __________ are almost same.

Consider an ideal solution of components A and B. The entropy of mixing per mole of an alloy containing 50% B is

The atmospheric temperature during melting of ice/snow (in the atmosphere)

Transition from laminar flow to turbulent flow in fluid flow through a pipe does not depend upon the

Galvanic corrosion cannot be prevented by

In Imperial Smelting Process for extraction of zinc, zinc vapour thus produced is quenched in the external condenser by the use of the following:

Work done by a/an __________ process is determined by ∫p. dv

Which of the following is not an ore of copper?

Which of the following pairs is not correctly matched?

The highest stress that a material can withstand for a specified length of time without excessive deformation is called the __________ strength.

Identify the correct statement.

Quartz is a __________ material.

Limestone addition in the blast furnace is done to flux __________ present in the raw materials.

Co-efficient of performance of a Carnot cycle refrigerator operating between - 23°C and + 27°C is

Rain drops falling through atmospheric air attain limited terminal velocity, because of

Also checkout

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