For a spontaneous natural process at constant temperature and pressure, the free energy of the system always

Question

For a spontaneous natural process at constant temperature and pressure, the free energy of the system always

A. Increases

B. Decreases

C. Remain constant

D. Increases to a maximum before decreasing

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For a thermodynamic system undergoing a process, which of the following pairs best expresses the relationship similar to that expressed by the pressure volume plot?

A. Temperature - entropy

B. Temperature - pressure

C. Enthalpy - entropy

D. Enthalpy-pressure

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Oxygen cylinders used for autogenous (cutting/welding) purposes are

A. Seamless & made of steel

B. Heat treated before use

C. Made by sand casting

D. Welded steel cylinders

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Alloy powder manufactured by the following process have spherical shapes.

A. Electrochemical deposition

B. Gaseous reduction

C. Atomisation

D. Mechanical attrition

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For which pair of the fuel gases, calorific value (C.V.) of one fuel is almost double that of the other on volume basis (i.e., kcal/Nm³) while the C.V. is same on weight basis (i.e., kcal/kg)?

A. Propane and acetylene

B. Propane and LPG

C. Sewage gas and gobar gas

D. B.F gas and coke oven gas

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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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Water-tube boiler is the one, in which

A. Water passes through tubes and flue gases around it

B. Tube carrying hot flue gases are immersed in a pool of water

C. Tubes are placed in vertical position

D. None of these

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__________ test can be termed as the semidestructive test.

A. Impact

B. Torsion

C. Hardness

D. Charpy

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Potable water means the water used for

A. Fire-fighting

B. Cooling

C. Drinking

D. Evaporation to produce steam

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In the acid Bessemer process, the hot metal should have the following composition.

A. S < 0.05% and P < 0.05%

B. S < 0.05% and P < 1.5%

C. S < 0.05% and P > 1.5%

D. S > 1.5% and P < 0.05%

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Powder metallurgy is used to produce

A. High precision components with complex cavities and sharp features

B. Components of large size

C. Porosity free components

D. Components of such alloys whose constituents do not form alloys readily

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Young's modulus of a material is the measure of its

A. Stiffness

B. Malleability

C. Creep resistance

D. Tensile strength

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Brittleness induced due to the presence of sulphur in steel can be reduced by adding

A. Manganese

B. Magnesium

C. Vanadium

D. Copper

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Pipelines carrying various utilities in chemical industries are identified by their colour codes. The color of pipeline carrying steam is

A. Black

B. Silver grey

C. Green

D. Yellow

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

A. Supercharging

B. Wall temperature

C. Compression ratio

D. Engine speed

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Maximum permissible air velocity in pipelines is about __________ metre/second.

A. 5

B. 10

C. 20

D. 40

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Thermal efficiency of an internal combustion engine is around __________ percent.

A. 8

B. 35

C. 65

D. 80

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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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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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Most of the phosphorous present in the blast furnace burden enters into

A. Hot metal

B. Flue gases

C. Slag

D. Refractory lining

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Density in the solid state is slightly less than that in its liquid state, in case of

A. Carbon dioxide

B. Water

C. Mercury

D. None of these

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A solution which resists change in its pH value on addition of acid/alkali is called the __________ solution.

A. Neutral

B. Ideal

C. Buffer

D. Zero pH

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Which of the following is an example of stress corrosion?

A. Season cracking of brass

B. Caustic embrittlement of steel

C. Both (A) & (B)

D. Neither (A) nor (B)

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The heat treatment to which the steel wire containing > 0.25% carbon is subjected to is

A. Full annealing

B. Bright annealing

C. Patenting

D. None of these

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Heat flow across a hollow sphere of inner radius 'r₁' and outer radius 'r₂' is directly proportional to

A. (r₂ - r₁)/r₁. r₂

B. r₁. r₂/(r₂- r₁)

C. (r₂ + r₁)/r₁. r₂

D. r₁. r₂/(r₂ + r₁)

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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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Pick out the wrong statement.

A. Geothermal energy is a non-conventional source of energy

B. Mass is converted into energy in both nuclear fission & fusion reaction

C. Inhalation of mercury vapour is not harmful for human beings

D. Inhalation of arsenic causes cancer

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Out of the following, the alloy which has equal percentage of constituents, is

A. White metal

B. Gun metal

C. Duralumin

D. Constantan

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Pick out the wrong statement about the machinability of metals. Machinability of a metal

A. Decreases with increase in strain hardening tendencies

B. Decreases with increase in hardness, in general

C. Depend on the composition, microstructure and physical & mechanical properties

D. Decreases with increases in tensile strength & decrease in grain size

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The heat released by cooling one mole of copper from 400 K to room temperature (300 K) is (assume : C_p of copper is 23 J K^-1mole^-1)

A. 2300 J

B. 4600 J

C. 230 J

D. 2.3 × 10⁶ J

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'Ice point' is designated on Fahrenheit temperature scale by

A. 0°

B. 32°

C. 62°

D. 212°

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Accepted Answer

A. Increases

For a spontaneous natural process at constant temperature and pressure, the free energy of the system always

Correct Answer :

Show all Chemical Engineering Basics MCQ

Related Questions

For a thermodynamic system undergoing a process, which of the following pairs best expresses the relationship similar to that expressed by the pressure volume plot?

Oxygen cylinders used for autogenous (cutting/welding) purposes are

Alloy powder manufactured by the following process have spherical shapes.

For which pair of the fuel gases, calorific value (C.V.) of one fuel is almost double that of the other on volume basis (i.e., kcal/Nm³) while the C.V. is same on weight basis (i.e., kcal/kg)?

The main charge in blast furnace is usually

Water-tube boiler is the one, in which

__________ test can be termed as the semidestructive test.

Potable water means the water used for

In the acid Bessemer process, the hot metal should have the following composition.

Powder metallurgy is used to produce

Young's modulus of a material is the measure of its

Brittleness induced due to the presence of sulphur in steel can be reduced by adding

Pipelines carrying various utilities in chemical industries are identified by their colour codes. The color of pipeline carrying steam is

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

Maximum permissible air velocity in pipelines is about __________ metre/second.

Thermal efficiency of an internal combustion engine is around __________ percent.

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

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

Most of the phosphorous present in the blast furnace burden enters into

Density in the solid state is slightly less than that in its liquid state, in case of

A solution which resists change in its pH value on addition of acid/alkali is called the __________ solution.

Which of the following is an example of stress corrosion?

The heat treatment to which the steel wire containing > 0.25% carbon is subjected to is

Heat flow across a hollow sphere of inner radius 'r₁' and outer radius 'r₂' is directly proportional to

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

Pick out the wrong statement.

Out of the following, the alloy which has equal percentage of constituents, is

Pick out the wrong statement about the machinability of metals. Machinability of a metal

The heat released by cooling one mole of copper from 400 K to room temperature (300 K) is (assume : C_p of copper is 23 J K^-1mole^-1)

'Ice point' is designated on Fahrenheit temperature scale by

Also checkout

For a spontaneous natural process at constant temperature and pressure, the free energy of the system always

Correct Answer :

Show all Chemical Engineering Basics MCQ

Related Questions

For a thermodynamic system undergoing a process, which of the following pairs best expresses the relationship similar to that expressed by the pressure volume plot?

Oxygen cylinders used for autogenous (cutting/welding) purposes are

Alloy powder manufactured by the following process have spherical shapes.

For which pair of the fuel gases, calorific value (C.V.) of one fuel is almost double that of the other on volume basis (i.e., kcal/Nm3) while the C.V. is same on weight basis (i.e., kcal/kg)?

The main charge in blast furnace is usually

Water-tube boiler is the one, in which

__________ test can be termed as the semidestructive test.

Potable water means the water used for

In the acid Bessemer process, the hot metal should have the following composition.

Powder metallurgy is used to produce

Young's modulus of a material is the measure of its

Brittleness induced due to the presence of sulphur in steel can be reduced by adding

Pipelines carrying various utilities in chemical industries are identified by their colour codes. The color of pipeline carrying steam is

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

Maximum permissible air velocity in pipelines is about __________ metre/second.

Thermal efficiency of an internal combustion engine is around __________ percent.

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

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

Most of the phosphorous present in the blast furnace burden enters into

Density in the solid state is slightly less than that in its liquid state, in case of

A solution which resists change in its pH value on addition of acid/alkali is called the __________ solution.

Which of the following is an example of stress corrosion?

The heat treatment to which the steel wire containing > 0.25% carbon is subjected to is

Heat flow across a hollow sphere of inner radius 'r1' and outer radius 'r2' is directly proportional to

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

Pick out the wrong statement.

Out of the following, the alloy which has equal percentage of constituents, is

Pick out the wrong statement about the machinability of metals. Machinability of a metal

The heat released by cooling one mole of copper from 400 K to room temperature (300 K) is (assume : Cp of copper is 23 J K-1mole-1)

'Ice point' is designated on Fahrenheit temperature scale by

Also checkout

For which pair of the fuel gases, calorific value (C.V.) of one fuel is almost double that of the other on volume basis (i.e., kcal/Nm³) while the C.V. is same on weight basis (i.e., kcal/kg)?

Heat flow across a hollow sphere of inner radius 'r₁' and outer radius 'r₂' is directly proportional to

The heat released by cooling one mole of copper from 400 K to room temperature (300 K) is (assume : C_p of copper is 23 J K^-1mole^-1)