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

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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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Solidification time of a molten metal in a casting is proportional to (where, V = volume of metal & A = its surface area; in the casting)

A. V/A

B. V/A²

C. V²/A

D. V²/A²

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The best lubricants for a machine working at high temperature & load is

A. Grease

B. Solid lubricant

C. Animal oils

D. Mineral oils

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Secondary hardening in steels arises out of the

A. Precipitation of fine alloy carbides at high temperatures

B. Refinement of ferrite grain size by working

C. Decomposition of retained austenite upon heat treatment

D. Precipitation of complex inter-metallic upon heat treatment

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In electrical resistance welding, distortion results from the use of improper

A. Clamping methods

B. Electrodes

C. Current

D. Filler material

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Which one of the following is incombustible?

A. H2

B. CCl4

C. C2H2

D. S

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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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On oscilloscope screen for dynamic measurement, lissajous diagram is normally used to determine the __________ of the input signal.

A. Frequency

B. Amplitude

C. Damping

D. None of these

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__________ is the process of coating the surface of steel with aluminium oxide, thereby imparting it increased resistance to corrosion & oxidation upto a temperature of 700°C.

A. Veneering

B. Galvanising

C. Electroplating

D. Calorising

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Stresses encountered in the metal forming processes are less than the __________ of the material.

A. Fracture strength

B. Yield strength

C. Elastic limit

D. Limit of proportionality

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

A. SiO2

B. Al2O3

C. MnO2

D. P

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What is the percentage of chromium in 18-4-1 high speed steel?

A. 1

B. 4

C. 18

D. 23

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For the Stoke's law to be valid in the case of a falling sphere in a fluid, the

A. Reynolds number (based on sphere diameter) should be < 1

B. Flow around the sphere should be in turbulent region

C. Sphere must be metallic

D. Fluid density should be constant

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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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__________ circuit is most commonly used to measure strain with the help of a strain gauge.

A. Ballast

B. Voltage balancing potentiometric

C. Simple current sensitive

D. None of these

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In __________ process, there is an increase in entropy with no degradation of energy.

A. Isothermal expansion

B. Isochoric heat addition

C. Polytropic expansion

D. Isobaric heat addition

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Two solutions A1 & A2 have pH value of 2 & 6 respectively. It implies that the solution

A. A₁ is more alkaline than solution A₂

B. A₁ is highly acidic

C. A₂ is very slightly acidic

D. Both (B) & (C)

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Midrex process of sponge iron production uses reformed natural gas as the reducing agent, which uses iron ore in the form of

A. Lumps

B. Pellets

C. Briquettes

D. Sinter

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Evaporative cooling process employs a combination of cooling and humidification in which the

A. Sensible heat is added

B. Sensible heat is removed and the latent heat is added

C. Latent heat is removed

D. Sensible heat is added and latent heat is removed

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Basicity of the slag in Indian blast furnace is in the range of

A. 0.7-1.0

B. 1.1-1.4

C. 1.5 - 1.8

D. 2.0 - 2.5

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Regeneration of molecular sieve requires it to be heated to a temperature of about __________ °C.

A. 80-120

B. 200-300

C. 600-800

D. 1000-1100

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Methyl orange indicator turns

A. Orange yellow in alkaline medium

B. Orange yellow in acidic medium

C. Colourless in acidic medium

D. Colourless in basic medium

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Triple point of water is

A. 0°F

B. 492°R

C. 0°K

D. -273°C

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Plants produce carbohydrates from the CO2 present in the atmosphere by

A. Polymerisation

B. Photochemical reaction

C. Oxidation

D. None of these

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As per international norms, the maximum permissible value of noise level in the industrial environment is __________ decibels as measured at a distance of 1.5 metres from the source of noise.

A. 110

B. 85

C. 60

D. 45

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Alloying elements present in Haynes stellite, which has superior performance than high speed steel, are:

A. Nickel, cobalt & chromium

B. Tungsten, chromium & cobalt

C. Manganese, chromium & cobalt

D. Tungsten, molybdenum & nickel

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If the head is doubled in & centrifugal pump, the power required will increase in the ratio of

A. 2³

B. 2^3/2

C. 2^5/2

D. 2^1/3

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Material of construction of the electrode used in the electric resistance welding is

A. Stainless steel

B. Graphite

C. Copper

D. Steel

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Batch process is preferred over continuous process, when the

A. Product yields and quality cannot be achieved in continuous process, because of long residence time

B. Sales demand of product is not steady

C. Same equipment cannot be used for several processes of the same nature

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

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The diffusion co-efficient of Ni in Cu at 1000 K is 1.93 × 10^-16 m²S^-1 and it is 1.94 × 10^-14 m²S^{- 1} at 1200 K. The activation energy (in k. J.mole-1) for the diffusion of Ni in Cu is

A. 130

B. 180

C. 230

D. 250

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__________ pipe is the most suitable for carrying sanitary drainage.

A. Stainless steel

B. Reinforced cement concrete

C. Cast iron

D. Asbestos cement

Discuss this answer

Accepted Answer

C. Aluminium oxide

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

Correct Answer :

Show all Chemical Engineering Basics MCQ

Related Questions

Solidification time of a molten metal in a casting is proportional to (where, V = volume of metal & A = its surface area; in the casting)

The best lubricants for a machine working at high temperature & load is

Secondary hardening in steels arises out of the

In electrical resistance welding, distortion results from the use of improper

Which one of the following is incombustible?

Pick out the wrong statement.

On oscilloscope screen for dynamic measurement, lissajous diagram is normally used to determine the __________ of the input signal.

__________ is the process of coating the surface of steel with aluminium oxide, thereby imparting it increased resistance to corrosion & oxidation upto a temperature of 700°C.

Stresses encountered in the metal forming processes are less than the __________ of the material.

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

What is the percentage of chromium in 18-4-1 high speed steel?

For the Stoke's law to be valid in the case of a falling sphere in a fluid, the

Corona discharge is related to the operation of a/an

__________ circuit is most commonly used to measure strain with the help of a strain gauge.

In __________ process, there is an increase in entropy with no degradation of energy.

Two solutions A1 & A2 have pH value of 2 & 6 respectively. It implies that the solution

Midrex process of sponge iron production uses reformed natural gas as the reducing agent, which uses iron ore in the form of

Evaporative cooling process employs a combination of cooling and humidification in which the

Basicity of the slag in Indian blast furnace is in the range of

Regeneration of molecular sieve requires it to be heated to a temperature of about __________ °C.

Methyl orange indicator turns

Triple point of water is

Plants produce carbohydrates from the CO2 present in the atmosphere by

As per international norms, the maximum permissible value of noise level in the industrial environment is __________ decibels as measured at a distance of 1.5 metres from the source of noise.

Alloying elements present in Haynes stellite, which has superior performance than high speed steel, are:

If the head is doubled in & centrifugal pump, the power required will increase in the ratio of

Material of construction of the electrode used in the electric resistance welding is

Batch process is preferred over continuous process, when the

The diffusion co-efficient of Ni in Cu at 1000 K is 1.93 × 10^-16 m²S^-1 and it is 1.94 × 10^-14 m²S^{- 1} at 1200 K. The activation energy (in k. J.mole-1) for the diffusion of Ni in Cu is

__________ pipe is the most suitable for carrying sanitary drainage.

Also checkout

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

Correct Answer :

Show all Chemical Engineering Basics MCQ

Related Questions

Solidification time of a molten metal in a casting is proportional to (where, V = volume of metal & A = its surface area; in the casting)

The best lubricants for a machine working at high temperature & load is

Secondary hardening in steels arises out of the

In electrical resistance welding, distortion results from the use of improper

Which one of the following is incombustible?

Pick out the wrong statement.

On oscilloscope screen for dynamic measurement, lissajous diagram is normally used to determine the __________ of the input signal.

__________ is the process of coating the surface of steel with aluminium oxide, thereby imparting it increased resistance to corrosion & oxidation upto a temperature of 700°C.

Stresses encountered in the metal forming processes are less than the __________ of the material.

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

What is the percentage of chromium in 18-4-1 high speed steel?

For the Stoke's law to be valid in the case of a falling sphere in a fluid, the

Corona discharge is related to the operation of a/an

__________ circuit is most commonly used to measure strain with the help of a strain gauge.

In __________ process, there is an increase in entropy with no degradation of energy.

Two solutions A1 & A2 have pH value of 2 & 6 respectively. It implies that the solution

Midrex process of sponge iron production uses reformed natural gas as the reducing agent, which uses iron ore in the form of

Evaporative cooling process employs a combination of cooling and humidification in which the

Basicity of the slag in Indian blast furnace is in the range of

Regeneration of molecular sieve requires it to be heated to a temperature of about __________ °C.

Methyl orange indicator turns

Triple point of water is

Plants produce carbohydrates from the CO2 present in the atmosphere by

As per international norms, the maximum permissible value of noise level in the industrial environment is __________ decibels as measured at a distance of 1.5 metres from the source of noise.

Alloying elements present in Haynes stellite, which has superior performance than high speed steel, are:

If the head is doubled in & centrifugal pump, the power required will increase in the ratio of

Material of construction of the electrode used in the electric resistance welding is

Batch process is preferred over continuous process, when the

The diffusion co-efficient of Ni in Cu at 1000 K is 1.93 × 10-16 m2S-1 and it is 1.94 × 10-14 m2S- 1 at 1200 K. The activation energy (in k. J.mole-1) for the diffusion of Ni in Cu is

__________ pipe is the most suitable for carrying sanitary drainage.

Also checkout

The diffusion co-efficient of Ni in Cu at 1000 K is 1.93 × 10^-16 m²S^-1 and it is 1.94 × 10^-14 m²S^{- 1} at 1200 K. The activation energy (in k. J.mole-1) for the diffusion of Ni in Cu is