Heating the Hypo-eutectoid steels to 30°C above the upper critical temperature line, soaking at that temperature and then cooling slowly to the room temperature to form a pearlite & ferrite structure is called

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Heating the Hypo-eutectoid steels to 30°C above the upper critical temperature line, soaking at that temperature and then cooling slowly to the room temperature to form a pearlite & ferrite structure is called

A. Tempering

B. Hardening

C. Annealing

D. Normalising

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The efficiency of a Carnot heat engine operating between absolute temperatures T₁ and T₂ (when, T₁ > T₂) is given by (T₁ - T₂)/T₁. The co-efficient of performance (CO.P.) of a Carnot heat pump operating between T₁ and T₂ is given by

A. T₁/(T₁-T₂)

B. T₂/(T₁-T₂)

C. T₁/T₂

D. T₂/T₁

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For a first order chemical reaction, the concentration of the reactant decreases __________ with time.

A. Linearly

B. Exponentially

C. Logarithmically

D. Inversely

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The following thermocouple may be used for measuring temperature upto 1873°K.

A. Chromel-alumel

B. Copper-constantan

C. Platinum-platinum rhodium

D. Iron-constantan

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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

Discuss this answer

In inventory control theory, the economic order quantity (EOQ) is the

A. Lot size corresponding to break even analysis

B. Average level of inventory

C. Optimum lot size

D. None of these

Discuss this answer

Routing in production, planning & control is concerned with the

A. Sequence of operation to be performed

B. Progress of work performed

C. Authorisation of work to be performed

D. Balancing of load on machines

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Silicon crystal can be converted to p-type semiconductor by doping with

A. Phosphorous

B. Nitrogen

C. Carbon

D. Boron

Discuss this answer

Glycerine is used as a coolant in cooling of some engines instead of water, because

A. Its higher boiling point (290°C) increases its heat carrying capacity

B. Comparatively less weight of coolant is required

C. Smaller radiator can be used

D. All a, b & c

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Moist air is cooled along the line of constant __________ , when it is passed over a cold & dry cooling coil, such that no condensation occurs?

A. Enthalpy

B. Relative humidity

C. Wet bulb temperature

D. Dew point temperature

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Case hardening of a material is

A. Followed by tempering or carburising

B. Preceded by its tempering

C. Done to get a soft ductile interior with a very hard surface

D. Carried out to get extreme hardness in its core

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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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High relative humidity decreases the evaporative process and as the temperature is increased, the relative humidity decreases. The comfort range for human body is the ambient temperature of 22 to 27°C with relative humidity ranging from __________ percent.

A. 5 to 10

B. 15 to 25

C. 45 to 50

D. 75 to 80

Discuss this answer

A material in which the atoms are arranged regularly in some directions but not in others, is termed as 'mesomorphous material'; an example of which is

A. Lead

B. Glass

C. Mica

D. Silver

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Fire refining process is employed in case of

A. Tin

B. Copper

C. Zinc

D. Aluminium

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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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What is the pH of distilled water?

A. 0

B. 1

C. 7

D. 14

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Otto cycle used in spark ignition petrol engines is also known as the constant __________ cycle.

A. Volume

B. Pressure

C. Heat

D. None of these

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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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In chemical dehumidification process

A. Wet bulb temperature increases

B. Dry bulb temperature remains constant

C. Dew point temperature increases

D. Dry bulb temperature increases

Discuss this answer

Which of the following gases cause global warming?

A. Carbon monoxide

B. Carbon dioxide

C. Nitrogen

D. Ozone

Discuss this answer

Minimum thermal efficiency of a steam boiler may be around __________ percent

A. 25

B. 45

C. 65

D. 20

Discuss this answer

__________ metal is used as a bearing liner material.

A. Pewter

B. White

C. Babbitt

D. Gun

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The ability of tool steel to resist softening at high temperatures is termed as __________ hardness.

A. Red

B. Extended

C. Super

D. Extreme

Discuss this answer

Water hammer is caused in steam carrying pipelines, because of

A. Partial condensation of steam

B. Vibration of the pipeline

C. High degree of superheat of steam

D. Its exposure to torrential rain

Discuss this answer

Brazing is the joining of metals

A. Without melting the base metal

B. With a non-ferrous filler

C. Both (A) & (B)

D. Neither (A) nor (B)

Discuss this answer

__________ is the process used for setting up compressive stresses in the surface of a metal to improve its fatigue strength.

A. Lancing

B. Shot peening

C. Slugging

D. Spinning

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The softness or hardness of a grinding wheel depends upon the type & amount of bonding material used. For general purpose cutter grinding __________ grinding wheel is normally used.

A. Hard

B. Soft

C. Silicon carbide

D. Aluminium oxide

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For the irreversible reaction, C_a+ 2C = C_a C₂ , Δ H°298 = - 60000 J . mole_-1 . If a system initially containing 2 moles of calcium, 3 moles of carbon and 1 mole of calcium carbide is allowed to react to completion, the heat evolved at 298 K will be

A. 30,000 J

B. 60,000 J

C. 90,000 J

D. 2,40,000 J

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__________ can replace tungsten in high speed steel.

A. Chromium

B. Vanadium

C. Cobalt

D. Molybdenum

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About __________ ton of coke is required in a cupola to produce one ton of casting.

A. 0.03

B. 0.3

C. 0.8

D. 1.5

Discuss this answer

Accepted Answer

C. Annealing

Heating the Hypo-eutectoid steels to 30°C above the upper critical temperature line, soaking at that temperature and then cooling slowly to the room temperature to form a pearlite & ferrite structure is called

Correct Answer :

Show all Chemical Engineering Basics MCQ

Related Questions

The efficiency of a Carnot heat engine operating between absolute temperatures T₁ and T₂ (when, T₁ > T₂) is given by (T₁ - T₂)/T₁. The co-efficient of performance (CO.P.) of a Carnot heat pump operating between T₁ and T₂ is given by

For a first order chemical reaction, the concentration of the reactant decreases __________ with time.

The following thermocouple may be used for measuring temperature upto 1873°K.

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

In inventory control theory, the economic order quantity (EOQ) is the

Routing in production, planning & control is concerned with the

Silicon crystal can be converted to p-type semiconductor by doping with

Glycerine is used as a coolant in cooling of some engines instead of water, because

Moist air is cooled along the line of constant __________ , when it is passed over a cold & dry cooling coil, such that no condensation occurs?

Case hardening of a material is

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

High relative humidity decreases the evaporative process and as the temperature is increased, the relative humidity decreases. The comfort range for human body is the ambient temperature of 22 to 27°C with relative humidity ranging from __________ percent.

A material in which the atoms are arranged regularly in some directions but not in others, is termed as 'mesomorphous material'; an example of which is

Fire refining process is employed in case of

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

What is the pH of distilled water?

Otto cycle used in spark ignition petrol engines is also known as the constant __________ cycle.

__________ is the hardest material out of the following.

In chemical dehumidification process

Which of the following gases cause global warming?

Minimum thermal efficiency of a steam boiler may be around __________ percent

__________ metal is used as a bearing liner material.

The ability of tool steel to resist softening at high temperatures is termed as __________ hardness.

Water hammer is caused in steam carrying pipelines, because of

Brazing is the joining of metals

__________ is the process used for setting up compressive stresses in the surface of a metal to improve its fatigue strength.

The softness or hardness of a grinding wheel depends upon the type & amount of bonding material used. For general purpose cutter grinding __________ grinding wheel is normally used.

For the irreversible reaction, C_a+ 2C = C_a C₂ , Δ H°298 = - 60000 J . mole_-1 . If a system initially containing 2 moles of calcium, 3 moles of carbon and 1 mole of calcium carbide is allowed to react to completion, the heat evolved at 298 K will be

__________ can replace tungsten in high speed steel.

About __________ ton of coke is required in a cupola to produce one ton of casting.

Also checkout

Heating the Hypo-eutectoid steels to 30°C above the upper critical temperature line, soaking at that temperature and then cooling slowly to the room temperature to form a pearlite & ferrite structure is called

Correct Answer :

Show all Chemical Engineering Basics MCQ

Related Questions

The efficiency of a Carnot heat engine operating between absolute temperatures T1 and T2 (when, T1 > T2) is given by (T1 - T2)/T1. The co-efficient of performance (CO.P.) of a Carnot heat pump operating between T1 and T2 is given by

For a first order chemical reaction, the concentration of the reactant decreases __________ with time.

The following thermocouple may be used for measuring temperature upto 1873°K.

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

In inventory control theory, the economic order quantity (EOQ) is the

Routing in production, planning & control is concerned with the

Silicon crystal can be converted to p-type semiconductor by doping with

Glycerine is used as a coolant in cooling of some engines instead of water, because

Moist air is cooled along the line of constant __________ , when it is passed over a cold & dry cooling coil, such that no condensation occurs?

Case hardening of a material is

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

High relative humidity decreases the evaporative process and as the temperature is increased, the relative humidity decreases. The comfort range for human body is the ambient temperature of 22 to 27°C with relative humidity ranging from __________ percent.

A material in which the atoms are arranged regularly in some directions but not in others, is termed as 'mesomorphous material'; an example of which is

Fire refining process is employed in case of

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

What is the pH of distilled water?

Otto cycle used in spark ignition petrol engines is also known as the constant __________ cycle.

__________ is the hardest material out of the following.

In chemical dehumidification process

Which of the following gases cause global warming?

Minimum thermal efficiency of a steam boiler may be around __________ percent

__________ metal is used as a bearing liner material.

The ability of tool steel to resist softening at high temperatures is termed as __________ hardness.

Water hammer is caused in steam carrying pipelines, because of

Brazing is the joining of metals

__________ is the process used for setting up compressive stresses in the surface of a metal to improve its fatigue strength.

The softness or hardness of a grinding wheel depends upon the type & amount of bonding material used. For general purpose cutter grinding __________ grinding wheel is normally used.

For the irreversible reaction, Ca+ 2C = Ca C2 , Δ H°298 = - 60000 J . mole-1 . If a system initially containing 2 moles of calcium, 3 moles of carbon and 1 mole of calcium carbide is allowed to react to completion, the heat evolved at 298 K will be

__________ can replace tungsten in high speed steel.

About __________ ton of coke is required in a cupola to produce one ton of casting.

Also checkout

The efficiency of a Carnot heat engine operating between absolute temperatures T₁ and T₂ (when, T₁ > T₂) is given by (T₁ - T₂)/T₁. The co-efficient of performance (CO.P.) of a Carnot heat pump operating between T₁ and T₂ is given by

For the irreversible reaction, C_a+ 2C = C_a C₂ , Δ H°298 = - 60000 J . mole_-1 . If a system initially containing 2 moles of calcium, 3 moles of carbon and 1 mole of calcium carbide is allowed to react to completion, the heat evolved at 298 K will be