__________ is the hardest material out of the following.

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__________ is the hardest material out of the following.

A. Boron carbide

B. Tungsten carbide

C. Hardened steel

D. Silicon carbide

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'Cryogenics' is concerned with the generation & use of low temperature in the range of

A. 0°K to 123°K

B. 0°C to - 123°C

C. 0°C to - 273°C

D. 0°K to 273°K

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Which of the following approaches the ideal gas behaviour most closely?

A. Wet steam

B. Saturated steam

C. Superheated steam

D. Saturated water

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Which one can be directly solidified from gaseous state without entering into liquid state?

A. Helium

B. Oxygen

C. Carbon dioxide

D. None of these

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Which of the following is the most suitable abrasive for grinding high tensile strength materials?

A. Silicon carbide

B. Corundum

C. Aluminium oxide

D. Boron carbide

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An ideal material for making cooking vessels should have

A. High heat capacity

B. Low heat capacity

C. High thermal conductivity

D. Both (B) and (C)

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Material of construction of foundry crucible is

A. Lead

B. Stainless steel

C. Graphite

D. Cast iron

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A psychrometer does not measure the __________ temperature of moist air.

A. Dew point

B. Dry bulb

C. Wet bulb

D. None of these

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Which of the following is the most wear resistant grade of carbide used for the cutting tools?

A. Aluminium carbide

B. Tungsten carbide

C. Nickel carbide

D. Iron carbide

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If Reynolds number is greater than 1, then the

A. Viscous force is larger than the inertia force

B. Inertia force is larger than the viscous force

C. Inertia force is larger than the surface tension force

D. Inertia force is larger than the gravitational force

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Annealing of white cast iron produces __________ iron.

A. Grey

B. Nodular

C. Malleable

D. Spheroidal

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The product out from a cupola is called

A. Wrought iron

B. Pig iron

C. Cast iron

D. None of these

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Which of the following varies as the square root of oil pressure during atomisation of fuel oil through a pressure jet burner?

A. Output & fineness

B. Velocity

C. Both (A) & (B)

D. None of these

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Broaching tools are usually made of

A. Cermets

B. High speed steel

C. Tungsten carbide

D. Stellite

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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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Photographic plates are coated with

A. Silver nitrate

B. Silver halide

C. Calcium silicate

D. Metallic silver

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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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For grinding of softer materials, the grinding wheel should have __________ grain size.

A. Finer

B. Coarser

C. Medium

D. Any type of

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Ceramic compounds as compared to metallic compounds

A. Crystallise faster

B. Resist greater tensile stress at room temperature

C. Have higher melting temperature

D. Are better conductor of electricity at higher temperature

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A thin, flat & square plate measuring 2 m × 2 m is freely hanging in ambient air at 25°C. It is exposed to the solar radiation falling on one side of the plate at the rate of 500 W/m². The plate temperature will remain constant at 30°C, if the convective heat transfer co-efficient is __________ W/m² °C.

A. 50

B. 100

C. 150

D. 200

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Cascade control is

A. The continuous adjustment of the set point index of an automatic control loop by a primary (master) controller

B. Used when changes in process conditions cause serious upsets in the controlled variable

C. Useful to control flow from temperature

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

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Pick out the correct statement.

A. Materials exhibiting high elasticity obey Hooke's law

B. The elastic behaviour of rubber under compression is the same as its behaviour under tension

C. The damping capacity of a material is due to its plastic deformation

D. The stress required to cause plastic flow in polycrystalline material is higher as compared to monocrystalline materials due to the presence of grains of different orientations

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Pick out the correct statement.

A. Hot worked materials are subjected to annealing to remove internal stresses

B. Annealing of steel hardens it slightly

C. Normalising of a material induces stresses

D. Tempering of a material improves ductility & toughness but reduces hardness & brittleness

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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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Production of a hollow product by inflation of a tube or parison is called the __________ process.

A. Blow moulding

B. Calendaring

C. Extrusion

D. Injection

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In connection with corrosion of metals, passivation is the process that

A. Intensifies deterioration

B. Changes the composition of the metal

C. Inhibits further deterioration

D. None of these

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Electrometallurgy is not involved in the extraction of __________ from its ore.

A. Aluminium

B. Tin

C. Lead

D. Both (B) & (C)

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The fugacity of liquid water at 298 K is approximately 3171 P_a. Considering the ideal heat of vaporisation as 43723 J/gm.mole, its fugacity at 300 K would be

A. 3171P_a

B. 3567P_a

C. 1.01 × 10⁵P_a

D. 5000P_a

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Thermal efficiency of an internal combustion engine is around __________ percent.

A. 8

B. 35

C. 65

D. 80

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Potable water means the water used for

A. Fire-fighting

B. Cooling

C. Drinking

D. Evaporation to produce steam

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A material being tested for endurance strength is subjected to the __________ load.

A. Impact

B. Completely reversed

C. Dynamic

D. Static & dynamic

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Accepted Answer

A. Boron carbide

__________ is the hardest material out of the following.

Correct Answer :

Show all Chemical Engineering Basics MCQ

Related Questions

'Cryogenics' is concerned with the generation & use of low temperature in the range of

Which of the following approaches the ideal gas behaviour most closely?

Which one can be directly solidified from gaseous state without entering into liquid state?

Which of the following is the most suitable abrasive for grinding high tensile strength materials?

An ideal material for making cooking vessels should have

Material of construction of foundry crucible is

A psychrometer does not measure the __________ temperature of moist air.

Which of the following is the most wear resistant grade of carbide used for the cutting tools?

If Reynolds number is greater than 1, then the

Annealing of white cast iron produces __________ iron.

The product out from a cupola is called

Which of the following varies as the square root of oil pressure during atomisation of fuel oil through a pressure jet burner?

Broaching tools are usually made of

Nitriding of a steel part does not increase its

Photographic plates are coated with

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

For grinding of softer materials, the grinding wheel should have __________ grain size.

Ceramic compounds as compared to metallic compounds

Cascade control is

Pick out the correct statement.

Pick out the correct statement.

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

Production of a hollow product by inflation of a tube or parison is called the __________ process.

In connection with corrosion of metals, passivation is the process that

Electrometallurgy is not involved in the extraction of __________ from its ore.

The fugacity of liquid water at 298 K is approximately 3171 P_a. Considering the ideal heat of vaporisation as 43723 J/gm.mole, its fugacity at 300 K would be

Thermal efficiency of an internal combustion engine is around __________ percent.

Potable water means the water used for

A material being tested for endurance strength is subjected to the __________ load.

Also checkout

__________ is the hardest material out of the following.

Correct Answer :

Show all Chemical Engineering Basics MCQ

Related Questions

'Cryogenics' is concerned with the generation & use of low temperature in the range of

Which of the following approaches the ideal gas behaviour most closely?

Which one can be directly solidified from gaseous state without entering into liquid state?

Which of the following is the most suitable abrasive for grinding high tensile strength materials?

An ideal material for making cooking vessels should have

Material of construction of foundry crucible is

A psychrometer does not measure the __________ temperature of moist air.

Which of the following is the most wear resistant grade of carbide used for the cutting tools?

If Reynolds number is greater than 1, then the

Annealing of white cast iron produces __________ iron.

The product out from a cupola is called

Which of the following varies as the square root of oil pressure during atomisation of fuel oil through a pressure jet burner?

Broaching tools are usually made of

Nitriding of a steel part does not increase its

Photographic plates are coated with

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

For grinding of softer materials, the grinding wheel should have __________ grain size.

Ceramic compounds as compared to metallic compounds

Cascade control is

Pick out the correct statement.

Pick out the correct statement.

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

Production of a hollow product by inflation of a tube or parison is called the __________ process.

In connection with corrosion of metals, passivation is the process that

Electrometallurgy is not involved in the extraction of __________ from its ore.

The fugacity of liquid water at 298 K is approximately 3171 Pa. Considering the ideal heat of vaporisation as 43723 J/gm.mole, its fugacity at 300 K would be

Thermal efficiency of an internal combustion engine is around __________ percent.

Potable water means the water used for

A material being tested for endurance strength is subjected to the __________ load.

Also checkout

The fugacity of liquid water at 298 K is approximately 3171 P_a. Considering the ideal heat of vaporisation as 43723 J/gm.mole, its fugacity at 300 K would be