Which of the following gases cause global warming?

Question

Which of the following gases cause global warming?

A. Carbon monoxide

B. Carbon dioxide

C. Nitrogen

D. Ozone

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Hollow shafts can be made as strong as solid shafts by making the twisting moments of both the shafts same. Shafts made by __________ have residual stresses.

A. Forging

B. Cold rolling

C. Hot rolling

D. Casting

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Which of the following if present in iron ore, enhances its value?

A. Alumina

B. Alkali oxide

C. Lime & Magnesia

D. None of these

Discuss this answer

A spring material should have low

A. Elastic limit

B. Deflection value

C. Fatigue resistance

D. None of these

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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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Recrystallisation temperature of steel is __________ °C.

A. 50

B. 300

C. 500

D. 800

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Boiler draught of 10 mm water column is equivalent to

A. 1 kgf/m²

B. 10 kgf/m²

C. 10 kgf/mm²

D. 1 kgf/mm²

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For dynamic strain measurement, the Wheatstone bridge used is of __________ type.

A. Voltage sensitive null

B. Voltage sensitive deflected

C. Current sensitive deflected

D. None of these

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Identify the correct statement with reference to the extractive metallurgy of aluminium.

A. The electrolyte consists of molten Na3AlF6 with approximately 1 to 8% Al2O3

B. Approximately 80% of the aluminium deposited on the cathode comes from cryolite

C. Sodium is deposited along with aluminium, but is immediately vaporised

D. Anode effect sets in when the cryolite concentration goes below 40%.

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Which of the following approaches the ideal gas behaviour most closely?

A. Wet steam

B. Saturated steam

C. Superheated steam

D. Saturated water

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Temperature attained in soldering of metals is about __________ °C.

A. 150-300

B. 400-500

C. 650-800

D. 1000-1100

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Rain drops falling through atmospheric air attain limited terminal velocity, because of

A. Upward thrust due to air

B. Viscous force exerted by air

C. Surface tension effects of water

D. Force of gravity

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Which of the following low melting alloy containing bismuth and lead is used for electric fuse?

A. Wood's metal

B. Babbitt metal

C. Monel metal

D. Duralumin

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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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Volume of blast furnace slag is about __________ times the volume of hot metal (pig iron) of the same weight

A. 1.5

B. 3

C. 5

D. 7

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The product (s) of roasting of a sulphide ore is (are)

A. Oxide only

B. Sulphate only

C. Oxide and sulphate

D. Dependent on temperature and partial pressure of oxygen & sulphur dioxide

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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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The temperature at which the magnetic property of iron disappears (i.e., it becomes non-magnetic) and its electrical conductivity & specific heat also changes, is called the 'Curie point', which is __________ °C.

A. 768

B. 908

C. 1400

D. 1539

Discuss this answer

Pick out the wrong statement.

A. Both annealing and normalising release the internal stresses of the material besides improving the mechanical properties

B. Low carbon steel does not respond to the heat treatment for hardening of the material, hence it is subjected to case hardening or surface hardening processes like cyaniding, carburising, nitriding etc., which produces high carbon outer layers resulting in increase of surface hardness

C. Induction hardening and flame hardening techniques are also used for surface hardening

D. Martempering of a material is a hardening process

Discuss this answer

Plasma is

A. A high temperature neutral gas

B. Nothing but ionised gas

C. A source of steady and highest controllable pressure

D. Formed at very low temperature

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Cobalt - 60 is used as a source of __________ in medical therapy & industrial radiography.

A. X-rays

B. γ-rays

C. α-rays

D. β-rays

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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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Cementite is in the lamellar form in the __________ phase of steel.

A. Martenistic

B. Bainitic

C. Pearlitic

D. Ferritic

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Often earing defects are found during deep drawing operation, because the

A. Surface finish of the sheet is poor

B. Sheet material has been given substantial spring back

C. Starting sheet has planer anisotropy due to its texture

D. Starting sheet has normal anisotropy due to its texture

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What happens, when SO₂ is passed through a solution of H2S in water?

A. Precipitation of sulphur takes place

B. H₂SO₃ is formed

C. Oleum is formed

D. None of these

Discuss this answer

Pick out the wrong statement.

A. Cold cracking of a weld is due to the presence of hydrogen gas in the weld

B. True stress is given by, σ = σE (1 + εE), where σE and εE are engineering stress and engineering strain respectively

C. Phosphorous can be easily recovered in the iron blast furnace

D. High residual stress at the surface is beneficial for fatigue properties of a material

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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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A 2 kg object weighs 1.8 kgf on a spring balance. The value of 'g' at that location in m/sec² is

A. 8.82

B. 9.81

C. 10.88

D. 0.95

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Which of the following is not an ore of copper?

A. Cryolite

B. Azurite

C. Chalcopyrite

D. Malachite

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Dephosphorization of molten pig iron is favoured by

A. Oxidising and basic slag

B. Reducing and basic slag

C. High activity co-efficient of phosphorous in metal

D. Oxidising and neutral slag

Discuss this answer

With increasing carbon percent in steel beyond 0.8%, its ultimate tensile strength (UTS) and __________ is not affected.

A. Impact strength

B. Percent elongation

C. Hardness

D. Both 'b' & 'c'

Discuss this answer

Accepted Answer

B. Carbon dioxide

Which of the following gases cause global warming?

Correct Answer :

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Related Questions

Hollow shafts can be made as strong as solid shafts by making the twisting moments of both the shafts same. Shafts made by __________ have residual stresses.

Which of the following if present in iron ore, enhances its value?

A spring material should have low

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

Recrystallisation temperature of steel is __________ °C.

Boiler draught of 10 mm water column is equivalent to

For dynamic strain measurement, the Wheatstone bridge used is of __________ type.

Identify the correct statement with reference to the extractive metallurgy of aluminium.

Which of the following approaches the ideal gas behaviour most closely?

Temperature attained in soldering of metals is about __________ °C.

Rain drops falling through atmospheric air attain limited terminal velocity, because of

Which of the following low melting alloy containing bismuth and lead is used for electric fuse?

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

Volume of blast furnace slag is about __________ times the volume of hot metal (pig iron) of the same weight

The product (s) of roasting of a sulphide ore is (are)

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

The temperature at which the magnetic property of iron disappears (i.e., it becomes non-magnetic) and its electrical conductivity & specific heat also changes, is called the 'Curie point', which is __________ °C.

Pick out the wrong statement.

Plasma is

Cobalt - 60 is used as a source of __________ in medical therapy & industrial radiography.

__________ is the hardest material out of the following.

Cementite is in the lamellar form in the __________ phase of steel.

Often earing defects are found during deep drawing operation, because the

What happens, when SO₂ is passed through a solution of H2S in water?

Pick out the wrong statement.

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 2 kg object weighs 1.8 kgf on a spring balance. The value of 'g' at that location in m/sec² is

Which of the following is not an ore of copper?

Dephosphorization of molten pig iron is favoured by

With increasing carbon percent in steel beyond 0.8%, its ultimate tensile strength (UTS) and __________ is not affected.

Also checkout

Which of the following gases cause global warming?

Correct Answer :

Show all Chemical Engineering Basics MCQ

Related Questions

Hollow shafts can be made as strong as solid shafts by making the twisting moments of both the shafts same. Shafts made by __________ have residual stresses.

Which of the following if present in iron ore, enhances its value?

A spring material should have low

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

Recrystallisation temperature of steel is __________ °C.

Boiler draught of 10 mm water column is equivalent to

For dynamic strain measurement, the Wheatstone bridge used is of __________ type.

Identify the correct statement with reference to the extractive metallurgy of aluminium.

Which of the following approaches the ideal gas behaviour most closely?

Temperature attained in soldering of metals is about __________ °C.

Rain drops falling through atmospheric air attain limited terminal velocity, because of

Which of the following low melting alloy containing bismuth and lead is used for electric fuse?

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

Volume of blast furnace slag is about __________ times the volume of hot metal (pig iron) of the same weight

The product (s) of roasting of a sulphide ore is (are)

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

The temperature at which the magnetic property of iron disappears (i.e., it becomes non-magnetic) and its electrical conductivity & specific heat also changes, is called the 'Curie point', which is __________ °C.

Pick out the wrong statement.

Plasma is

Cobalt - 60 is used as a source of __________ in medical therapy & industrial radiography.

__________ is the hardest material out of the following.

Cementite is in the lamellar form in the __________ phase of steel.

Often earing defects are found during deep drawing operation, because the

What happens, when SO2 is passed through a solution of H2S in water?

Pick out the wrong statement.

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 2 kg object weighs 1.8 kgf on a spring balance. The value of 'g' at that location in m/sec2 is

Which of the following is not an ore of copper?

Dephosphorization of molten pig iron is favoured by

With increasing carbon percent in steel beyond 0.8%, its ultimate tensile strength (UTS) and __________ is not affected.

Also checkout

What happens, when SO₂ is passed through a solution of H2S in water?

A 2 kg object weighs 1.8 kgf on a spring balance. The value of 'g' at that location in m/sec² is