The 'laughing gas' is

Question

The 'laughing gas' is

A. Nitrous oxide

B. Nitric oxide

C. Nitrogen trioxide

D. Nitrogen pentoxide

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Comment

Fahrenheit and Centigrade scales have the same readings at

A. -55°

B. -40°

C. -33°

D. -58°

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The most abundant metal present in the earth's crust is;

A. Iron

B. Copper

C. Titanium

D. Aluminium

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Photographic plates are coated with

A. Silver nitrate

B. Silver halide

C. Calcium silicate

D. Metallic silver

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The mechanism involved in the removal of metal in drilling operation is by

A. Compression

B. Extrusion

C. Shearing

D. Both 'b' & 'c'

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Insulation of liquid surface can be achieved by __________ on top of its surface.

A. Floating hollow polypropylene spheres

B. Spraying alumina powder

C. Putting cement

D. None of these

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Between 230 and 370°C, blue brittleness is caused in mild steel because of the

A. Immobility of dislocation

B. Strain-ageing

C. Increase in Young's modulus

D. Strain hardening

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Large diameter reinforced cement concrete (RCC) pipes are generally joined by __________ joint.

A. Flanged iron

B. Collar

C. Flexible

D. Expansion

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Superheating of steam is done at constant

A. Enthalpy

B. Entropy

C. Pressure

D. Volume

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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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The thickness of oxide film is y at time t. If are the temperature dependent constants, the parabolic law of oxidation is given by

A.

B.

C.

D.

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Joining of thin foils is preferred to be done by

A. Gamma rays

B. X-rays

C. Microwaves

D. Gas welding

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Electrometallurgical methods of metal extraction is normally used for those metals

A. Whose oxide/ore is not reduced by carbon

B. Which fall in the category of alkali & alkaline earth metals

C. Which stands higher in the electrochemical series of the metal

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

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Air-petrol ratio in an automotive petrol engine is around

A. 14 : 1

B. 22 : 1

C. 25 : 1

D. 4 : 1

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Maximum heat dissipation occurs from a steel wire (k = 0.5 W/m. k) of 15 mm diameter exposed to air (h = 20W/m² .k), when the insulation thickness is __________ mm.

A. 15

B. 25

C. 10

D. 30

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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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Current employed in resistance welding ranges from __________ kVA/.

A. 1.2 to 2.5

B. 4.5 to 6.2

C. 7.5 to 8.5

D. 10.5 to 15.5

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Biological shield in a nuclear reactor is generally provided to protect against the

A. α-rays

B. β-rays

C. Gamma rays & neutrons

D. Electrons

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Tumbling is the process of improving the __________ of the materials/parts.

A. Surface finish

B. Fatigue limit

C. Creep limit

D. Surface cleanliness

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Upto the critical radius of insulation, added insulation, will

A. Increase the heat loss

B. Decrease heat loss and will have no effect beyond that

C. Decrease heat flux

D. Reduce convection heat loss compared to conduction heat less

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Spheroidising of a material is a/an __________ process.

A. Normalising

B. Annealing

C. Tempering

D. Hardening

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The main charge in blast furnace is usually

A. Iron ore & coke

B. Iron ore, coke & air

C. Limestone, coke & iron ore

D. Limestone, sand & iron ore

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A steam carrying pipeline is insulated with two layers of insulating materials with the inferior insulation material forming the inner part. If the two insulating layers are interchanged, the heat conducted will

A. Increase

B. Decrease

C. Remain unaffected

D. May increase or decrease; depends on the thickness of each layer

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Removal of non-condensable from steam or other vapour is termed as the __________ process.

A. Condensation

B. Deaeration

C. Scavenging

D. Exhaust

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Direct conversion of thermal energy to electrical energy is facilitated by the

A. Fuel cells

B. Photo voltaic cell

C. Magneto hydrodynamic generator

D. None of these

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A form of stress corrosion failure termed as 'season cracking' is generally observed in

A. Thermosetting polymers

B. High carbon steels

C. Brasses

D. Borosilicate glasses

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Pick out the wrong statement.

A. Seam welding, projection welding & spot welding are the classification of electrical resistance welding

B. Electrode tip in spot welding is of copper and the tip diameter should be equal to t (where, t = plate thickness to be welded)

C. In spot welding, two pieces to be joined are overlapped and placed between two electrodes

D. Mild steel sheet cannot be spot welded

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Increase in the entropy of a system represents the

A. Degradation of energy

B. Decrease in system pressure

C. Increase in the availability of energy

D. Increase in the temperature

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

A. Resilience

B. Toughness

C. Ductility

D. Impact strength

Discuss this answer

With increase in __________ Knocking tendency in a spark ignition petrol engine decreases.

A. Supercharging

B. Wall temperature

C. Compression ratio

D. Engine speed

Discuss this answer

Accepted Answer

A. Nitrous oxide

The 'laughing gas' is

Correct Answer :

Show all Chemical Engineering Basics MCQ

Related Questions

Fahrenheit and Centigrade scales have the same readings at

The most abundant metal present in the earth's crust is;

Photographic plates are coated with

The mechanism involved in the removal of metal in drilling operation is by

Insulation of liquid surface can be achieved by __________ on top of its surface.

Between 230 and 370°C, blue brittleness is caused in mild steel because of the

Large diameter reinforced cement concrete (RCC) pipes are generally joined by __________ joint.

Superheating of steam is done at constant

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

The thickness of oxide film is y at time t. If are the temperature dependent constants, the parabolic law of oxidation is given by

Joining of thin foils is preferred to be done by

Electrometallurgical methods of metal extraction is normally used for those metals

Air-petrol ratio in an automotive petrol engine is around

Maximum heat dissipation occurs from a steel wire (k = 0.5 W/m. k) of 15 mm diameter exposed to air (h = 20W/m² .k), when the insulation thickness is __________ mm.

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

Current employed in resistance welding ranges from __________ kVA/.

Biological shield in a nuclear reactor is generally provided to protect against the

Tumbling is the process of improving the __________ of the materials/parts.

Upto the critical radius of insulation, added insulation, will

Spheroidising of a material is a/an __________ process.

The main charge in blast furnace is usually

A steam carrying pipeline is insulated with two layers of insulating materials with the inferior insulation material forming the inner part. If the two insulating layers are interchanged, the heat conducted will

Removal of non-condensable from steam or other vapour is termed as the __________ process.

Direct conversion of thermal energy to electrical energy is facilitated by the

A form of stress corrosion failure termed as 'season cracking' is generally observed in

Pick out the wrong statement.

Increase in the entropy of a system represents the

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).

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

With increase in __________ Knocking tendency in a spark ignition petrol engine decreases.

Also checkout

The 'laughing gas' is

Correct Answer :

Show all Chemical Engineering Basics MCQ

Related Questions

Fahrenheit and Centigrade scales have the same readings at

The most abundant metal present in the earth's crust is;

Photographic plates are coated with

The mechanism involved in the removal of metal in drilling operation is by

Insulation of liquid surface can be achieved by __________ on top of its surface.

Between 230 and 370°C, blue brittleness is caused in mild steel because of the

Large diameter reinforced cement concrete (RCC) pipes are generally joined by __________ joint.

Superheating of steam is done at constant

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

The thickness of oxide film is y at time t. If are the temperature dependent constants, the parabolic law of oxidation is given by

Joining of thin foils is preferred to be done by

Electrometallurgical methods of metal extraction is normally used for those metals

Air-petrol ratio in an automotive petrol engine is around

Maximum heat dissipation occurs from a steel wire (k = 0.5 W/m. k) of 15 mm diameter exposed to air (h = 20W/m2 .k), when the insulation thickness is __________ mm.

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

Current employed in resistance welding ranges from __________ kVA/.

Biological shield in a nuclear reactor is generally provided to protect against the

Tumbling is the process of improving the __________ of the materials/parts.

Upto the critical radius of insulation, added insulation, will

Spheroidising of a material is a/an __________ process.

The main charge in blast furnace is usually

A steam carrying pipeline is insulated with two layers of insulating materials with the inferior insulation material forming the inner part. If the two insulating layers are interchanged, the heat conducted will

Removal of non-condensable from steam or other vapour is termed as the __________ process.

Direct conversion of thermal energy to electrical energy is facilitated by the

A form of stress corrosion failure termed as 'season cracking' is generally observed in

Pick out the wrong statement.

Increase in the entropy of a system represents the

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

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

With increase in __________ Knocking tendency in a spark ignition petrol engine decreases.

Also checkout

Maximum heat dissipation occurs from a steel wire (k = 0.5 W/m. k) of 15 mm diameter exposed to air (h = 20W/m² .k), when the insulation thickness is __________ mm.

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).