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

Question

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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Nusselt number is related to the Reynolds number (Re) in turbulent & laminar flow respectively as

A. Re^0.5, Re^0.8

B. Re^0.8, Re^-0.5

C. Re^0.8, Re^0.5

D. Re^-0.8, Re^0.5

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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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Normalising does not __________ of a metal.

A. Improve machinability & tensile strength

B. Remove internal stresses

C. Refine the structure

D. Remove strains caused by cold working

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Resilience of a bolt can be increased by increasing its

A. Length

B. Shank diameter

C. Head diameter

D. None of these

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The usual energy consumption in electric arc furnace steel making is __________ KWh/ton of steel.

A. 60 - 100

B. 400 - 700

C. 1200 -1500

D. 2000 - 2300

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Lead is poured into the joints between two __________ pipes.

A. Cast iron

B. Steel

C. Concrete

D. Plastic

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The normal stress is the same in all directions at a point in a fluid, only when the fluid

A. Is at rest & has zero viscosity

B. Is frictionless

C. Fluid layer has no motion relative to an adjacent layer of fluid

D. is incompressible & frictionless

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Powder metallurgy technique is used in the production of __________ tools.

A. Tungsten carbide

B. High carbon steel

C. High speed steel

D. Drilling

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Oxygen cylinders used for autogenous (cutting/welding) purposes are

A. Seamless & made of steel

B. Heat treated before use

C. Made by sand casting

D. Welded steel cylinders

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Electrostatic separation of minerals from each other is based on their differences in the following property.

A. Densities

B. Magnetic permeabilities

C. Electrical conductivities

D. Hardness

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Tesla metre per ampere (T. m/A) is the unit for the measurement of

A. Magnetic susceptibility

B. Magnetic moment

C. Permeability of free space

D. Flux density

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Cemented carbide tools are not suitable for cutting

A. Aluminium

B. Brass

C. Cast iron

D. Steel

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Blasting of tri-nitro-toluene (TNT) is done by mixing it with ammonium

A. Nitrate

B. Sulphate

C. Carbonate

D. Chloride

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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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__________ rubber is generally used for making 'O' rings used for vacuum sealings.

A. Natural

B. Neoprene

C. Butadiene

D. Nitrile

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The wet bulb temperature is lower in dry air than in wet air at the same temperature. A dry bulb thermometer registers a higher temperature than a wet bulb thermometer except at __________ percent relative humidity.

A. 0

B. 100

C. 50

D. None of these

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Which of the following is used to produce draught in the locomotive boilers?

A. Chimney

B. Induced draught fan

C. Forced draught fan

D. Steam jet arrangement

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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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Wrought iron does not have

A. Uniform strength in all directions

B. Ability to hold protective coating

C. High ductility & corrosion resistance

D. Easily weldable characteristics

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As per the Indian boiler regulation (IBR), the type of joint preferred for the circumferential joint is the __________ joint.

A. Butt

B. Lap

C. Welded

D. None of these

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An approximately __________ process exemplifies the flow of a gas through a very long pipe of uniform cross-section.

A. Adiabatic

B. Isothermal

C. Isentropic

D. Isochoric

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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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Ammonia leakage in the refrigeration system is detected by

A. Sulphur stick, which on detection gives white smoke

B. Using chemical reagents

C. Its smell

D. Soap solution

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Increasing the carbon content of steel

A. Reduces the upper shelf energy

B. Increasing the ductility transition temperature

C. Decreases brittleness

D. Decreases hardness

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__________ is a special constituent of chlorophyll without which photosynthesis is not possible.

A. Calcium

B. Nitrogen

C. Phosphorous

D. Hydrogen

Discuss this answer

Photographic plates are coated with

A. Silver nitrate

B. Silver halide

C. Calcium silicate

D. Metallic silver

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'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

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Oxyacetylene reducing flame is used while carrying out welding on

A. Alloy steel

B. Grey cast iron

C. Mild steel

D. High carbon steel

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For which pair of the fuel gases, calorific value (C.V.) of one fuel is almost double that of the other on volume basis (i.e., kcal/Nm³) while the C.V. is same on weight basis (i.e., kcal/kg)?

A. Propane and acetylene

B. Propane and LPG

C. Sewage gas and gobar gas

D. B.F gas and coke oven gas

Discuss this answer

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

Discuss this answer

Accepted Answer

C. Inhibits further deterioration

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

Correct Answer :

Show all Chemical Engineering Basics MCQ

Related Questions

Nusselt number is related to the Reynolds number (Re) in turbulent & laminar flow respectively as

__________ is the hardest material out of the following.

Normalising does not __________ of a metal.

Resilience of a bolt can be increased by increasing its

The usual energy consumption in electric arc furnace steel making is __________ KWh/ton of steel.

Lead is poured into the joints between two __________ pipes.

The normal stress is the same in all directions at a point in a fluid, only when the fluid

Powder metallurgy technique is used in the production of __________ tools.

Oxygen cylinders used for autogenous (cutting/welding) purposes are

Electrostatic separation of minerals from each other is based on their differences in the following property.

Tesla metre per ampere (T. m/A) is the unit for the measurement of

Cemented carbide tools are not suitable for cutting

Blasting of tri-nitro-toluene (TNT) is done by mixing it with ammonium

__________ 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.

__________ rubber is generally used for making 'O' rings used for vacuum sealings.

The wet bulb temperature is lower in dry air than in wet air at the same temperature. A dry bulb thermometer registers a higher temperature than a wet bulb thermometer except at __________ percent relative humidity.

Which of the following is used to produce draught in the locomotive boilers?

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

Wrought iron does not have

As per the Indian boiler regulation (IBR), the type of joint preferred for the circumferential joint is the __________ joint.

An approximately __________ process exemplifies the flow of a gas through a very long pipe of uniform cross-section.

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

Ammonia leakage in the refrigeration system is detected by

Increasing the carbon content of steel

__________ is a special constituent of chlorophyll without which photosynthesis is not possible.

Photographic plates are coated with

'Flare tower' used in industry is meant for

Oxyacetylene reducing flame is used while carrying out welding on

For which pair of the fuel gases, calorific value (C.V.) of one fuel is almost double that of the other on volume basis (i.e., kcal/Nm³) while the C.V. is same on weight basis (i.e., kcal/kg)?

The order of a chemical reaction

Also checkout

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

Correct Answer :

Show all Chemical Engineering Basics MCQ

Related Questions

Nusselt number is related to the Reynolds number (Re) in turbulent & laminar flow respectively as

__________ is the hardest material out of the following.

Normalising does not __________ of a metal.

Resilience of a bolt can be increased by increasing its

The usual energy consumption in electric arc furnace steel making is __________ KWh/ton of steel.

Lead is poured into the joints between two __________ pipes.

The normal stress is the same in all directions at a point in a fluid, only when the fluid

Powder metallurgy technique is used in the production of __________ tools.

Oxygen cylinders used for autogenous (cutting/welding) purposes are

Electrostatic separation of minerals from each other is based on their differences in the following property.

Tesla metre per ampere (T. m/A) is the unit for the measurement of

Cemented carbide tools are not suitable for cutting

Blasting of tri-nitro-toluene (TNT) is done by mixing it with ammonium

__________ 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.

__________ rubber is generally used for making 'O' rings used for vacuum sealings.

The wet bulb temperature is lower in dry air than in wet air at the same temperature. A dry bulb thermometer registers a higher temperature than a wet bulb thermometer except at __________ percent relative humidity.

Which of the following is used to produce draught in the locomotive boilers?

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

Wrought iron does not have

As per the Indian boiler regulation (IBR), the type of joint preferred for the circumferential joint is the __________ joint.

An approximately __________ process exemplifies the flow of a gas through a very long pipe of uniform cross-section.

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

Ammonia leakage in the refrigeration system is detected by

Increasing the carbon content of steel

__________ is a special constituent of chlorophyll without which photosynthesis is not possible.

Photographic plates are coated with

'Flare tower' used in industry is meant for

Oxyacetylene reducing flame is used while carrying out welding on

For which pair of the fuel gases, calorific value (C.V.) of one fuel is almost double that of the other on volume basis (i.e., kcal/Nm3) while the C.V. is same on weight basis (i.e., kcal/kg)?

The order of a chemical reaction

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For which pair of the fuel gases, calorific value (C.V.) of one fuel is almost double that of the other on volume basis (i.e., kcal/Nm³) while the C.V. is same on weight basis (i.e., kcal/kg)?