Oxyacetylene reducing flame is used while carrying out welding on

Question

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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Brass parts with high residual tensile stress at the surface are susceptible to season cracking (i.e. spontaneous cracking occuring on exposure to atmospheric corrosion), if its zinc percentage is more than

A. 5

B. 10

C. 20

D. 35

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During sensible cooling of air, its wet bulb temperature

A. Decreases but dew point remains constant

B. Increases but dew point remains constant

C. Increases & the dew point decreases

D. Decreases & the dew point increases

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A material subjected __________ must have high resilience.

A. Shock loading

B. Vibration

C. Fatigue

D. Tension

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To counteract the bad effects of strain hardening on a cold formed part, it must be

A. Tempered

B. Normalised

C. Annealed

D. Hardened

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The refrigerant freon-12 is chemically

A. CCl₂F₂

B. CCl₃F

C. CClF₃

D. CCl₄F

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The property of material, by which a given amount of energy is absorbed by it, without plastic deformation, is called

A. Resilience

B. Toughness

C. Ductility

D. Impact strength

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The taper provided on pattern for its easy & clean withdrawal from the mould is termed as the __________ allowance.

A. Casting

B. Pattern

C. Draft

D. Distortion

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Recrystallisation temperature of steel is __________ °C.

A. 50

B. 300

C. 500

D. 800

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Thermistors are used in __________ devices.

A. Voltage measuring

B. Temperature measuring

C. Temperature compensating

D. Both (B) & (C)

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__________ number determines whether the fluid flow in an open channel is supercritical, critical or sub-critical.

A. Mach

B. Reynolds

C. Froude

D. Weber

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Faraday's law of electrolysis is related to the

A. Cation speed

B. Atomic number of the cation

C. Equivalent mass of the electrolyte

D. None of these

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Liquid nitrogen containers can be made from

A. Ferritic stainless steel

B. HSLA steel

C. Titanium

D. Austenitic stainless steel

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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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__________ pipe is the most suitable for carrying sanitary drainage.

A. Stainless steel

B. Reinforced cement concrete

C. Cast iron

D. Asbestos cement

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The refractory brick which has good thermal shock resistance at high temperature but cracks on cooling below 400°C is

A. Magnesite

B. Chrome

C. Silica

D. Fireclay

Discuss this answer

Plants produce carbohydrates from the CO2 present in the atmosphere by

A. Polymerisation

B. Photochemical reaction

C. Oxidation

D. None of these

Discuss this answer

Saturated steam at a pressure of 25 kg/cm² is throttled to attain 5 kg/cm². Then the outcoming steam will be

A. Wet

B. Saturated

C. Superheated

D. None of these

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Steel containing low percentage of nickel, chromium & tungsten are termed as the __________ steel.

A. Wrought

B. Tool

C. Alloy

D. Plain carbon

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Cold chisel & hammers are made of

A. High speed steel

B. High carbon steel

C. Forged steel

D. Mild steel

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Fire refining process is employed in case of

A. Tin

B. Copper

C. Zinc

D. Aluminium

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Yield strength of a polycrystalline metal with an average grain size d, is proportional to

A. d^1/2

B. d^-1/2

C. d

D. d^-1

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Maximum change in the hardness of martensite occurs in the carbon content range of __________ percent in steel.

A. 0.01 to 0.10

B. 0.2 to 0.4

C. 0.5 to 0.7

D. 0.8 to 1.0

Discuss this answer

The most suitable material of construction for a sewer to carry sewage under high pressure is

A. Asbestos cement

B. Steel

C. Cement concrete

D. Stoneware

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Babbitt lining is used on brass/bronze bearings to increase the

A. Antifriction properties

B. Compressive strength

C. Bearing resistance

D. Wear resistance

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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

Discuss this answer

__________ stress cannot be sustained by a fluid in equilibrium.

A. Shear

B. Tensile

C. Compressive

D. None of these

Discuss this answer

Stainless steel is welded with difficulty because of

A. Its high melting temperature

B. Chances of cracking

C. Oxide film formation

D. Chromium carbide formation

Discuss this answer

The transition temperature at which all the ferromagnetic materials become paramagnetic materials is termed as the 'Curie temperature'. Its value for cobalt is __________ °C.

A. 768

B. 1127

C. 1359

D. 1480

Discuss this answer

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

Discuss this answer

The lightest non-inflammable gas is

A. H2

B. He

C. Ar

D. O2

Discuss this answer

Accepted Answer

C. Mild steel

Oxyacetylene reducing flame is used while carrying out welding on

Correct Answer :

Show all Chemical Engineering Basics MCQ

Related Questions

Brass parts with high residual tensile stress at the surface are susceptible to season cracking (i.e. spontaneous cracking occuring on exposure to atmospheric corrosion), if its zinc percentage is more than

During sensible cooling of air, its wet bulb temperature

A material subjected __________ must have high resilience.

To counteract the bad effects of strain hardening on a cold formed part, it must be

The refrigerant freon-12 is chemically

The property of material, by which a given amount of energy is absorbed by it, without plastic deformation, is called

The taper provided on pattern for its easy & clean withdrawal from the mould is termed as the __________ allowance.

Recrystallisation temperature of steel is __________ °C.

Thermistors are used in __________ devices.

__________ number determines whether the fluid flow in an open channel is supercritical, critical or sub-critical.

Faraday's law of electrolysis is related to the

Liquid nitrogen containers can be made from

__________ 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.

__________ pipe is the most suitable for carrying sanitary drainage.

The refractory brick which has good thermal shock resistance at high temperature but cracks on cooling below 400°C is

Plants produce carbohydrates from the CO2 present in the atmosphere by

Saturated steam at a pressure of 25 kg/cm² is throttled to attain 5 kg/cm². Then the outcoming steam will be

Steel containing low percentage of nickel, chromium & tungsten are termed as the __________ steel.

Cold chisel & hammers are made of

Fire refining process is employed in case of

Yield strength of a polycrystalline metal with an average grain size d, is proportional to

Maximum change in the hardness of martensite occurs in the carbon content range of __________ percent in steel.

The most suitable material of construction for a sewer to carry sewage under high pressure is

Babbitt lining is used on brass/bronze bearings to increase the

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

__________ stress cannot be sustained by a fluid in equilibrium.

Stainless steel is welded with difficulty because of

The transition temperature at which all the ferromagnetic materials become paramagnetic materials is termed as the 'Curie temperature'. Its value for cobalt is __________ °C.

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

The lightest non-inflammable gas is

Also checkout

Oxyacetylene reducing flame is used while carrying out welding on

Correct Answer :

Show all Chemical Engineering Basics MCQ

Related Questions

Brass parts with high residual tensile stress at the surface are susceptible to season cracking (i.e. spontaneous cracking occuring on exposure to atmospheric corrosion), if its zinc percentage is more than

During sensible cooling of air, its wet bulb temperature

A material subjected __________ must have high resilience.

To counteract the bad effects of strain hardening on a cold formed part, it must be

The refrigerant freon-12 is chemically

The property of material, by which a given amount of energy is absorbed by it, without plastic deformation, is called

The taper provided on pattern for its easy & clean withdrawal from the mould is termed as the __________ allowance.

Recrystallisation temperature of steel is __________ °C.

Thermistors are used in __________ devices.

__________ number determines whether the fluid flow in an open channel is supercritical, critical or sub-critical.

Faraday's law of electrolysis is related to the

Liquid nitrogen containers can be made from

__________ 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.

__________ pipe is the most suitable for carrying sanitary drainage.

The refractory brick which has good thermal shock resistance at high temperature but cracks on cooling below 400°C is

Plants produce carbohydrates from the CO2 present in the atmosphere by

Saturated steam at a pressure of 25 kg/cm2 is throttled to attain 5 kg/cm2. Then the outcoming steam will be

Steel containing low percentage of nickel, chromium & tungsten are termed as the __________ steel.

Cold chisel & hammers are made of

Fire refining process is employed in case of

Yield strength of a polycrystalline metal with an average grain size d, is proportional to

Maximum change in the hardness of martensite occurs in the carbon content range of __________ percent in steel.

The most suitable material of construction for a sewer to carry sewage under high pressure is

Babbitt lining is used on brass/bronze bearings to increase the

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

__________ stress cannot be sustained by a fluid in equilibrium.

Stainless steel is welded with difficulty because of

The transition temperature at which all the ferromagnetic materials become paramagnetic materials is termed as the 'Curie temperature'. Its value for cobalt is __________ °C.

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

The lightest non-inflammable gas is

Also checkout

Saturated steam at a pressure of 25 kg/cm² is throttled to attain 5 kg/cm². Then the outcoming steam will be