Volumetric composition of flue gas analysed with the Orsat apparatus is : CO₂ = 12%, O₂ = 8%, CO = nil, N₂ = 80%. This flue gas composition indicates that

Question

Volumetric composition of flue gas analysed with the Orsat apparatus is : CO₂ = 12%, O₂ = 8%, CO = nil, N₂ = 80%. This flue gas composition indicates that

A. Pure oxygen has been used for combustion

B. Nitrogen percentage in the fuel is very high

C. Excess air has been used for combustion

D. Hydrogen is not present in the fuel

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Annealing of white cast iron produces __________ iron.

A. Grey

B. Nodular

C. Malleable

D. Spheroidal

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Which of the, following is not associated with the functioning of a petrol engine?

A. Compression ignition system

B. Spark plug

C. Carburettor

D. Otto cycle

Discuss this answer

The following type of bonding is strongly directional in solids.

A. Vander Waal's

B. Ionic

C. Metallic

D. Covalent

Discuss this answer

Which of the following is not a characteristic observed in material failure by fatigue fracture?

A. Plastic deformation of material does not occur

B. Initiation of crack from below the surface does not occur

C. Initiation of crack occurs on the surface of the machine part

D. Presence of both rough & smooth zone with conchoidal markings in smooth zone of the surface

Discuss this answer

Steel & cast iron pipes are produced by __________ casting.

A. Slush

B. Die

C. Investment

D. True centrifugal

Discuss this answer

Isotropic materials have the same __________ in all directions.

A. Induced stresses

B. Density

C. Elastic properties

D. Thermal properties

Discuss this answer

Out of the following __________ iron has the best capability to bear sudden & excessive shocks.

A. White

B. Cast

C. Wrought

D. Pig

Discuss this answer

LVDT used for displacement measurement is a/an __________ transducer.

A. Passive

B. Active

C. Capacitive

D. None of these

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Fatigue limit improvement by over stressing the metal by successively increasing the load is called coaxing. In fatigue failure, the material fails

A. Below the yield point

B. Above the yield point

C. Below the elastic limit

D. At the elastic limit

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

Main constituent of bone ash is

A. Ammonium phosphate

B. Calcium phosphate

C. Animal charcoal

D. Ammonium sulphate

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Maximum heat dissipation occurs from a steel wire (k = 0.5 W/m. k) of 15 mm diameter exposed to air (h = 20W/m² .k), when the insulation thickness is __________ mm.

A. 15

B. 25

C. 10

D. 30

Discuss this answer

Which of the following is not a ferromagnetic material?

A. Nickel

B. Cobalt

C. Aluminium

D. Iron

Discuss this answer

Blast furnace slag is mainly molten

A. Sand

B. Magnesium silicate

C. Calcium silicate

D. Iron pyrite

Discuss this answer

Boiling point of water gets lowered at high altitudes (e.g., hills), because

A. Temperature is low

B. Atmospheric pressure is low

C. Atmospheric pressure is high

D. None of these

Discuss this answer

Which of the following materials has the poorest electrical conductivity?

A. Carbon

B. Aluminium

C. Silver

D. Stainless steel

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The minimum carbon content in steel should be __________ percent for it to respond to a hardening treatment.

A. 0.2

B. 0.4

C. 0.6

D. 0.8

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What is the critical radius of insulation (cms) for a metallic cylinder, if the convective heat transfer co-efficient with the ambient atmosphere is 5 W/m². °K? Thermal conductivity of metal and insulation material are 40 and 0.1 W/m.°K respectively.

A. 2

B. 8

C. 10

D. 40

Discuss this answer

__________ of austenite decreases the hardenability in steel.

A. Fine grains

B. Coarse grains

C. Homogeneity

D. Dissolved elements (except cobalt)

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Dew point temperature always gives an indication of the __________ of the moist air.

A. Dryness

B. Moisture content

C. Coolness

D. Latent heat

Discuss this answer

'Flare tower' used in industry is meant for

A. Venting off (after burning) the excess inflammable/toxic gases at high pressure

B. Absorbing the pollutant gases from the furnace exhaust

C. Cooling of furnace exhaust gases

D. None of these

Discuss this answer

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

A. Vacancy

B. Dislocation

C. Grain boundary

D. All of these

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

Discuss this answer

Pick out the wrong statement.

A. Both annealing and normalising release the internal stresses of the material besides improving the mechanical properties

B. Low carbon steel does not respond to the heat treatment for hardening of the material, hence it is subjected to case hardening or surface hardening processes like cyaniding, carburising, nitriding etc., which produces high carbon outer layers resulting in increase of surface hardness

C. Induction hardening and flame hardening techniques are also used for surface hardening

D. Martempering of a material is a hardening process

Discuss this answer

__________ of air does not increase with increase in temperature.

A. Density

B. Thermal diffusivity

C. Viscosity

D. Thermal conductivity

Discuss this answer

Unit of viscosity in CGS system is

A.

B.

C.

D.

Discuss this answer

The surface tension of a liquid, at critical temperature is

A. Indeterminate

B. Zero

C. Infinity

D. Same as that at any other temperature

Discuss this answer

The ratio of thermal & electrical conductivity is same for all the metals at the same temperature; and at around room temperature, this ratio is proportional to(where, T = absolute temperature, °K)

A. T

B. 1/T

C. T²

D. 1/T²

Discuss this answer

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

A. Fracture

B. Dislocation

C. Slip

D. Twinning

Discuss this answer

On being hit with a hammer, __________ will readily fracture.

A. Brass

B. Mild steel

C. Cast iron

D. Lead

Discuss this answer

Accepted Answer

C. Excess air has been used for combustion

Volumetric composition of flue gas analysed with the Orsat apparatus is : CO₂ = 12%, O₂ = 8%, CO = nil, N₂ = 80%. This flue gas composition indicates that

Correct Answer :

Show all Chemical Engineering Basics MCQ

Related Questions

Annealing of white cast iron produces __________ iron.

Which of the, following is not associated with the functioning of a petrol engine?

The following type of bonding is strongly directional in solids.

Which of the following is not a characteristic observed in material failure by fatigue fracture?

Steel & cast iron pipes are produced by __________ casting.

Isotropic materials have the same __________ in all directions.

Out of the following __________ iron has the best capability to bear sudden & excessive shocks.

LVDT used for displacement measurement is a/an __________ transducer.

Fatigue limit improvement by over stressing the metal by successively increasing the load is called coaxing. In fatigue failure, the material fails

Coarse grained steels have

Main constituent of bone ash is

Maximum heat dissipation occurs from a steel wire (k = 0.5 W/m. k) of 15 mm diameter exposed to air (h = 20W/m² .k), when the insulation thickness is __________ mm.

Which of the following is not a ferromagnetic material?

Blast furnace slag is mainly molten

Boiling point of water gets lowered at high altitudes (e.g., hills), because

Which of the following materials has the poorest electrical conductivity?

The minimum carbon content in steel should be __________ percent for it to respond to a hardening treatment.

What is the critical radius of insulation (cms) for a metallic cylinder, if the convective heat transfer co-efficient with the ambient atmosphere is 5 W/m². °K? Thermal conductivity of metal and insulation material are 40 and 0.1 W/m.°K respectively.

__________ of austenite decreases the hardenability in steel.

Dew point temperature always gives an indication of the __________ of the moist air.

'Flare tower' used in industry is meant for

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

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

Pick out the wrong statement.

__________ of air does not increase with increase in temperature.

Unit of viscosity in CGS system is

The surface tension of a liquid, at critical temperature is

The ratio of thermal & electrical conductivity is same for all the metals at the same temperature; and at around room temperature, this ratio is proportional to(where, T = absolute temperature, °K)

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

On being hit with a hammer, __________ will readily fracture.

Also checkout

Volumetric composition of flue gas analysed with the Orsat apparatus is : CO2 = 12%, O2 = 8%, CO = nil, N2 = 80%. This flue gas composition indicates that

Correct Answer :

Show all Chemical Engineering Basics MCQ

Related Questions

Annealing of white cast iron produces __________ iron.

Which of the, following is not associated with the functioning of a petrol engine?

The following type of bonding is strongly directional in solids.

Which of the following is not a characteristic observed in material failure by fatigue fracture?

Steel & cast iron pipes are produced by __________ casting.

Isotropic materials have the same __________ in all directions.

Out of the following __________ iron has the best capability to bear sudden & excessive shocks.

LVDT used for displacement measurement is a/an __________ transducer.

Fatigue limit improvement by over stressing the metal by successively increasing the load is called coaxing. In fatigue failure, the material fails

Coarse grained steels have

Main constituent of bone ash is

Maximum heat dissipation occurs from a steel wire (k = 0.5 W/m. k) of 15 mm diameter exposed to air (h = 20W/m2 .k), when the insulation thickness is __________ mm.

Which of the following is not a ferromagnetic material?

Blast furnace slag is mainly molten

Boiling point of water gets lowered at high altitudes (e.g., hills), because

Which of the following materials has the poorest electrical conductivity?

The minimum carbon content in steel should be __________ percent for it to respond to a hardening treatment.

What is the critical radius of insulation (cms) for a metallic cylinder, if the convective heat transfer co-efficient with the ambient atmosphere is 5 W/m2. °K? Thermal conductivity of metal and insulation material are 40 and 0.1 W/m.°K respectively.

__________ of austenite decreases the hardenability in steel.

Dew point temperature always gives an indication of the __________ of the moist air.

'Flare tower' used in industry is meant for

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

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

Pick out the wrong statement.

__________ of air does not increase with increase in temperature.

Unit of viscosity in CGS system is

The surface tension of a liquid, at critical temperature is

The ratio of thermal & electrical conductivity is same for all the metals at the same temperature; and at around room temperature, this ratio is proportional to(where, T = absolute temperature, °K)

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

On being hit with a hammer, __________ will readily fracture.

Also checkout

Volumetric composition of flue gas analysed with the Orsat apparatus is : CO₂ = 12%, O₂ = 8%, CO = nil, N₂ = 80%. This flue gas composition indicates that

Maximum heat dissipation occurs from a steel wire (k = 0.5 W/m. k) of 15 mm diameter exposed to air (h = 20W/m² .k), when the insulation thickness is __________ mm.

What is the critical radius of insulation (cms) for a metallic cylinder, if the convective heat transfer co-efficient with the ambient atmosphere is 5 W/m². °K? Thermal conductivity of metal and insulation material are 40 and 0.1 W/m.°K respectively.