__________ of air does not increase with increase in temperature.

Question

__________ of air does not increase with increase in temperature.

A. Density

B. Thermal diffusivity

C. Viscosity

D. Thermal conductivity

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The mechanism which changes the value of manipulated variable in response to the output signal from the control unit is called the

A. Final control element

B. On-off control

C. Floating control action

D. None of these

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A jet engine turbine blade is normally manufactured by

A. Forging

B. Shell moulding

C. Investment casting

D. Pressure die casting

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For infinite parallel planes having emissivities ε1 & ε2, the interchange factor for radiation from surface 1 to surface 2 is given by

A.

B.

C.

D.

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An atom bomb works on the principle of

A. Nuclear fission

B. Nuclear fusion

C. Both the nuclear fission & fusion

D. Ionisation

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Heat transfer by __________ is almost absent in case of fluidised bed drying operation.

A. Radiation

B. Conduction

C. Convection

D. Both (B) & (C)

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Lead pencil contains

A. Graphite

B. Lead sulphide

C. Lead

D. Both (B) & (C)

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Name the safety device used to protect the boiler, when the water level falls below a minimum level.

A. Blow down valve

B. Blow off cock

C. Fusible plug

D. Safety valve

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Temper brittleness of a material can be fairly detected by the __________ test.

A. Fatigue

B. Notched bar impact

C. Tensile

D. Hardness

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The concentration of (H⁺) ions is 4 x 10^-5 in a solution. Then pH of the solution will be (Given log 4 = 0.6)

A. 4.4

B. 5.6

C. 8.4

D. 2.4

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The emf of a Deniell cell Zn | Zn²⁺ || Cu²⁺ | Cu can be increased by

A. Decreasing the surface area of the electrodes

B. Increasing the concentration of zinc sulphate solution

C. Increasing the surface area of the electrodes

D. Increasing the concentration of copper sulphate solution

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Dislocation cross-slip is difficult in those materials, which have

A. Large number of slip systems

B. High work hardening rate

C. Coarse grain size

D. Low stacking fault energy

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Batch process is preferred over continuous process, when the

A. Product yields and quality cannot be achieved in continuous process, because of long residence time

B. Sales demand of product is not steady

C. Same equipment cannot be used for several processes of the same nature

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

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Evaporative cooling process employs a combination of cooling and humidification in which the

A. Sensible heat is added

B. Sensible heat is removed and the latent heat is added

C. Latent heat is removed

D. Sensible heat is added and latent heat is removed

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High endurance limit of carburised machine parts is because of the fact that carburisation

A. Suppresses any stress concentration produced in the parts

B. Enhances the yield point of the material

C. Introduces a compressive layer on the surface

D. Produces a better surface finish

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Nitriding of a steel part does not increase its

A. Grain size

B. Fatigue limit

C. Surface hardness

D. Wear resistance

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Wrought iron is not

A. Ductile & resistant to corrosion/rusting

B. Weldable easily

C. Having uniform strength in all directions

D. Having maximum tensile strength along the lines of slag distribution

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Which of the following material handling equipments is not suitable for moving materials in varying paths?

A. Hand trolley

B. Belt conveyor

C. Crane

D. Truck

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Consider the equilibrium A(g) + B(g) = AB(g). When the partial pressure of A is 10-2 atm, the partial pressure of B is 10-3 atm and the partial pressure of AB is 1 atm, the equilibrium constant 'K' is

A. 10 atm-1

B. 105 atm-1

C. 10 (dimensionless)

D. 105 (dimensionless)

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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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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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Even though heat transfer co-efficient in boiling liquids is large, use of fins is advantageous, when the entire surface is exposed to __________ boiling.

A. Film

B. Nucleate

C. Transition

D. All modes of

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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 atmospheric temperature during melting of ice/snow (in the atmosphere)

A. Decreases

B. Increases

C. Remain same

D. May increase or decrease; depends on the altitude where snow melts

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The elastic strain in copper is due to the

A. Motion of dislocations

B. Stretching of atomic bonds

C. Breakage of atomic bonds

D. None of the above

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Iron content in Indian iron ore is about __________ percent.

A. 80-85

B. 60-65

C. 40-45

D. 20-25

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The burnout heat flux in the nucleate boiling regime is not a function of the

A. Liquid density

B. Vapour density

C. Temperature difference

D. Heat of evaporation

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Boiler tube size is specified by its thickness and __________ diameter.

A. Outside

B. Inside

C. Mean

D. None of these

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In TIG welding, thoriated tungsten electrodes are used, because it

A. Has higher current carrying capacity

B. Has better electron emissivity

C. Is stronger than ordinary tungsten

D. Is easy to prepare

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The underground well of a biogas plant is called the

A. Septic tank

B. Oxidation well

C. Digestor

D. Lagoon

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Which of the following is resistant to the action of both heat & chemicals?

A. Borosilicate glass

B. Silica glass

C. Soda lime glass

D. None of these

Discuss this answer

Accepted Answer

A. Density

__________ of air does not increase with increase in temperature.

Correct Answer :

Show all Chemical Engineering Basics MCQ

Related Questions

The mechanism which changes the value of manipulated variable in response to the output signal from the control unit is called the

A jet engine turbine blade is normally manufactured by

For infinite parallel planes having emissivities ε1 & ε2, the interchange factor for radiation from surface 1 to surface 2 is given by

An atom bomb works on the principle of

Heat transfer by __________ is almost absent in case of fluidised bed drying operation.

Lead pencil contains

Name the safety device used to protect the boiler, when the water level falls below a minimum level.

Temper brittleness of a material can be fairly detected by the __________ test.

The concentration of (H⁺) ions is 4 x 10^-5 in a solution. Then pH of the solution will be (Given log 4 = 0.6)

The emf of a Deniell cell Zn | Zn²⁺ || Cu²⁺ | Cu can be increased by

Dislocation cross-slip is difficult in those materials, which have

Batch process is preferred over continuous process, when the

Evaporative cooling process employs a combination of cooling and humidification in which the

High endurance limit of carburised machine parts is because of the fact that carburisation

Nitriding of a steel part does not increase its

Wrought iron is not

Which of the following material handling equipments is not suitable for moving materials in varying paths?

Consider the equilibrium A(g) + B(g) = AB(g). When the partial pressure of A is 10-2 atm, the partial pressure of B is 10-3 atm and the partial pressure of AB is 1 atm, the equilibrium constant 'K' is

Water-tube boiler is the one, in which

Electrometallurgical methods of metal extraction is normally used for those metals

Even though heat transfer co-efficient in boiling liquids is large, use of fins is advantageous, when the entire surface is exposed to __________ boiling.

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 atmospheric temperature during melting of ice/snow (in the atmosphere)

The elastic strain in copper is due to the

Iron content in Indian iron ore is about __________ percent.

The burnout heat flux in the nucleate boiling regime is not a function of the

Boiler tube size is specified by its thickness and __________ diameter.

In TIG welding, thoriated tungsten electrodes are used, because it

The underground well of a biogas plant is called the

Which of the following is resistant to the action of both heat & chemicals?

Also checkout

__________ of air does not increase with increase in temperature.

Correct Answer :

Show all Chemical Engineering Basics MCQ

Related Questions

The mechanism which changes the value of manipulated variable in response to the output signal from the control unit is called the

A jet engine turbine blade is normally manufactured by

For infinite parallel planes having emissivities ε1 & ε2, the interchange factor for radiation from surface 1 to surface 2 is given by

An atom bomb works on the principle of

Heat transfer by __________ is almost absent in case of fluidised bed drying operation.

Lead pencil contains

Name the safety device used to protect the boiler, when the water level falls below a minimum level.

Temper brittleness of a material can be fairly detected by the __________ test.

The concentration of (H+) ions is 4 x 10-5 in a solution. Then pH of the solution will be (Given log 4 = 0.6)

The emf of a Deniell cell Zn | Zn2+ || Cu2+ | Cu can be increased by

Dislocation cross-slip is difficult in those materials, which have

Batch process is preferred over continuous process, when the

Evaporative cooling process employs a combination of cooling and humidification in which the

High endurance limit of carburised machine parts is because of the fact that carburisation

Nitriding of a steel part does not increase its

Wrought iron is not

Which of the following material handling equipments is not suitable for moving materials in varying paths?

Consider the equilibrium A(g) + B(g) = AB(g). When the partial pressure of A is 10-2 atm, the partial pressure of B is 10-3 atm and the partial pressure of AB is 1 atm, the equilibrium constant 'K' is

Water-tube boiler is the one, in which

Electrometallurgical methods of metal extraction is normally used for those metals

Even though heat transfer co-efficient in boiling liquids is large, use of fins is advantageous, when the entire surface is exposed to __________ boiling.

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

The atmospheric temperature during melting of ice/snow (in the atmosphere)

The elastic strain in copper is due to the

Iron content in Indian iron ore is about __________ percent.

The burnout heat flux in the nucleate boiling regime is not a function of the

Boiler tube size is specified by its thickness and __________ diameter.

In TIG welding, thoriated tungsten electrodes are used, because it

The underground well of a biogas plant is called the

Which of the following is resistant to the action of both heat & chemicals?

Also checkout

The concentration of (H⁺) ions is 4 x 10^-5 in a solution. Then pH of the solution will be (Given log 4 = 0.6)

The emf of a Deniell cell Zn | Zn²⁺ || Cu²⁺ | Cu can be increased by

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).