A reduction in thermal resistance during heat transfer does not occur in the

Question

A reduction in thermal resistance during heat transfer does not occur in the

A. Convection heat transfer by stirring the fluid and cleaning the heating surface

B. Conduction heat transfer by reduction in the material thickness and increase in the thermal conductivity

C. Radiation heat transfer by increasing the temperature and reducing the emissivity

D. None of these

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Copper deposits are found in India at the following location:

A. Kudremukh

B. Kolar

C. Khetri

D. Ramagundam

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Speisses is a mixture of the following:

A. Arsenides of heavy metals

B. Antimonides of heavy metals

C. Arsenides & antimonides of heavy metals

D. Iron, cobalt and nickel

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The approximate height of a blast furnace having a useful volume of 2000 m³ is about __________ metres

A. 25

B. 35

C. 55

D. 75

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While the recrystallisation temperature for pure metals is 0.3 T_m, the same for alloys is equal to __________ × T_m (where, T_m Melting temperature).

A. 0.25

B. 0.45

C. 0.70

D. 0.95

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Suitability of steel for its use in cable is judged by its strength in

A. Tension

B. Compression

C. Torsion

D. Shear

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Blast furnace slag is mainly molten

A. Sand

B. Magnesium silicate

C. Calcium silicate

D. Iron pyrite

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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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Carnot cycle is also termed as the constant __________ cycle in thermodynamics.

A. Entropy

B. Pressure

C. Volume

D. Heat

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While the oxy-acetylene flame produces a temperature of 3200°C, the temperature produced by oxy-hydrogen flame is about __________ °C.

A. 1800

B. 2000

C. 2400

D. 3000

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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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In a boundary layer developed along the flow, the pressure decreases in the downstream direction. The boundary layer thickness in this case will

A. Decrease gradually

B. Increase gradually

C. Increase rapidly

D. Remain constant

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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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In Newton's law of viscosity, which states that the shear stress is proportional to the __________ Co-efficient of viscosity is called dynamic or absolute viscosity(where, V = velocity, = velocity gradient).

A.

B.

C.

D.

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A particle is settling in a liquid under Stokesian conditions. The free falling velocity of the particle is proportional to

A. √(Particle diameter)

B. Particle diameter

C. (Particle diameter)²

D. (Particle diameter)³

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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

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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

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Addition of small amount of __________ to grey cast iron is done to produce nodular grey cast iron.

A. Manganese

B. Phosphorous

C. Magnesium

D. Chromium

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Which of the following properties of a solid is not dependent on crystal imperfection?

A. Ductility

B. Semi-conductivity

C. Melting point

D. Yield stress

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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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Which of the following heat treatment processes is usually applied to castings?

A. Tempering

B. Annealing

C. Normalising

D. Carburising

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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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Cold cracking in the heat affected zone of a high strength steel weld can take place because of the

A. Retained austenite

B. Martensite formation

C. Relatively high sulphur content in the base metal

D. Sufficient hydrogen present in the welding arc

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An abrupt and sudden fall in the reading of barometer is an indication of the

A. Storm

B. Rain

C. Clear weather

D. Cold wave

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Steel balls are manufactured by

A. Sintering

B. Casting

C. Cold heading

D. Spinning

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Minimum safe distance between two liquid fuel storage tanks is equal to (where, H = height of the tank)

A. H

B. H/2

C. H/4

D. H/6

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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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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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Which of the following is a commonly used manometric liquid for low pressure range?

A. Ethyl alcohol

B. Carbon tetrachloride

C. Glycerol

D. Ethylene glycol

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With increase in compression ratio, the volumetric efficiency of air compressor

A. Increases

B. Decreases

C. Remain same

D. May increase or decrease (depends on the suction pressure)

Discuss this answer

The main reducing agent in iron blast furnace is

A. Carbon dioxide

B. Carbon monoxide

C. Oxygen

D. Air

Discuss this answer

Accepted Answer

C. Radiation heat transfer by increasing the temperature and reducing the emissivity

A reduction in thermal resistance during heat transfer does not occur in the

Correct Answer :

Show all Chemical Engineering Basics MCQ

Related Questions

Copper deposits are found in India at the following location:

Speisses is a mixture of the following:

The approximate height of a blast furnace having a useful volume of 2000 m³ is about __________ metres

While the recrystallisation temperature for pure metals is 0.3 T_m, the same for alloys is equal to __________ × T_m (where, T_m Melting temperature).

Suitability of steel for its use in cable is judged by its strength in

Blast furnace slag is mainly molten

Methyl orange indicator turns

Carnot cycle is also termed as the constant __________ cycle in thermodynamics.

While the oxy-acetylene flame produces a temperature of 3200°C, the temperature produced by oxy-hydrogen flame is about __________ °C.

__________ 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.

In a boundary layer developed along the flow, the pressure decreases in the downstream direction. The boundary layer thickness in this case will

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

In Newton's law of viscosity, which states that the shear stress is proportional to the __________ Co-efficient of viscosity is called dynamic or absolute viscosity(where, V = velocity, = velocity gradient).

A particle is settling in a liquid under Stokesian conditions. The free falling velocity of the particle is proportional to

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

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

Addition of small amount of __________ to grey cast iron is done to produce nodular grey cast iron.

Which of the following properties of a solid is not dependent on crystal imperfection?

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

Which of the following heat treatment processes is usually applied to castings?

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

Cold cracking in the heat affected zone of a high strength steel weld can take place because of the

An abrupt and sudden fall in the reading of barometer is an indication of the

Steel balls are manufactured by

Minimum safe distance between two liquid fuel storage tanks is equal to (where, H = height of the tank)

Broaching tools are usually made of

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

Which of the following is a commonly used manometric liquid for low pressure range?

With increase in compression ratio, the volumetric efficiency of air compressor

The main reducing agent in iron blast furnace is

Also checkout

A reduction in thermal resistance during heat transfer does not occur in the

Correct Answer :

Show all Chemical Engineering Basics MCQ

Related Questions

Copper deposits are found in India at the following location:

Speisses is a mixture of the following:

The approximate height of a blast furnace having a useful volume of 2000 m3 is about __________ metres

While the recrystallisation temperature for pure metals is 0.3 Tm, the same for alloys is equal to __________ × Tm (where, Tm Melting temperature).

Suitability of steel for its use in cable is judged by its strength in

Blast furnace slag is mainly molten

Methyl orange indicator turns

Carnot cycle is also termed as the constant __________ cycle in thermodynamics.

While the oxy-acetylene flame produces a temperature of 3200°C, the temperature produced by oxy-hydrogen flame is about __________ °C.

__________ 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.

In a boundary layer developed along the flow, the pressure decreases in the downstream direction. The boundary layer thickness in this case will

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

In Newton's law of viscosity, which states that the shear stress is proportional to the __________ Co-efficient of viscosity is called dynamic or absolute viscosity(where, V = velocity, = velocity gradient).

A particle is settling in a liquid under Stokesian conditions. The free falling velocity of the particle is proportional to

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

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

Addition of small amount of __________ to grey cast iron is done to produce nodular grey cast iron.

Which of the following properties of a solid is not dependent on crystal imperfection?

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

Which of the following heat treatment processes is usually applied to castings?

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

Cold cracking in the heat affected zone of a high strength steel weld can take place because of the

An abrupt and sudden fall in the reading of barometer is an indication of the

Steel balls are manufactured by

Minimum safe distance between two liquid fuel storage tanks is equal to (where, H = height of the tank)

Broaching tools are usually made of

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

Which of the following is a commonly used manometric liquid for low pressure range?

With increase in compression ratio, the volumetric efficiency of air compressor

The main reducing agent in iron blast furnace is

Also checkout

The approximate height of a blast furnace having a useful volume of 2000 m³ is about __________ metres

While the recrystallisation temperature for pure metals is 0.3 T_m, the same for alloys is equal to __________ × T_m (where, T_m Melting temperature).