In chemical dehumidification of air

Question

In chemical dehumidification of air

A. Both specific humidity & dry bulb temperature increases

B. Both specific humidity & dry bulb temperature decreases

C. Specific humidity decreases & dry bulb temperature increases

D. Specific humidity increases & dry bulb temperature decreases

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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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Out of the following, which will fracture most readity, when hit with a hard hammer?

A. Brass

B. Bronze

C. German silver

D. Cast iron

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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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A steam pipe is intended to be insulated with two layers of insulating materials of different thermal conductivities. For minimum heat transfer to take place

A. The better insulation material should be put just next to pipe (i.e., inside)

B. The better insulating material should be put outside

C. Either of the insulating material could be put on either side

D. Steam temperature is considered before deciding as to which insulating material is to be put inside (i.e., just next to the pipe)

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Sacrificial anode method is used in the protection of pipelines which are buried underground. Sacrificial anode

A. Occurs higher in the electro-chemical series of metals

B. Is exemplified by magnesium plate

C. Is much cheaper than the cathodic base material to be guarded against corrosion

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

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Natural water contains approximately __________ percent of heavy water.

A. 0.015

B. 0.71

C. 1.2

D. 3.5

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Which of the following does not discharge the dust collected as a dry solid?

A. Electrostatic precipitator

B. Wet scrubber

C. Bag filter

D. Gravity settling chamber

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Filler material used in welding should have __________ as compared to the parent metal to be welded.

A. Lower melting temperature

B. Same melting temperature

C. Same composition

D. Both 'b' & 'c'

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Which of the following processes follows the hardening process for reducing the hardening strains & increasing the toughness of the steel part?

A. Anodising

B. Tempering

C. Carburising

D. Annealing

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Which of the following forces does not act on a fluid at rest?

A. Viscous force

B. Gravity force

C. Hydrostatic force

D. Surface tension force

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Corrosion rate cannot be lowered by reducing the __________ of the corroding medium.

A. Concentration

B. Velocity

C. Temperature

D. None of these

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Reynolds number of a fluid flowing in a circular pipe is 10,000. What will be the Reynolds number when the fluid velocity is decreased by 30% & the pipe diameter is increased by 30%?

A. 9,100

B. 13,000

C. 7,000

D. 2,550

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__________ can replace tungsten in high speed steel.

A. Chromium

B. Vanadium

C. Cobalt

D. Molybdenum

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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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Force between the molecules of the same substance is called __________ force.

A. Adhesive

B. Cohesive

C. Molecular

D. Vander Walls

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In a drilling process, the metal is removed by both shearing & extrusion. General purpose drills are made of

A. Stainless steel

B. Mild steel

C. High speed steel

D. High carbon steel

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__________ of test specimens is not involved in any hardness testing method.

A. Fracture

B. Indentation

C. Wear

D. Scratch

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__________ joint is mostly used for joining pipes carrying water at low pressure.

A. Nipple

B. Socket

C. Union

D. Bell and spigot

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Addition of __________ to steel does not help in improving its machinability.

A. Sulphur

B. Silicon

C. Lead

D. Phosphorous

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Property responsible for the talcum powder to cling to the skin is the

A. Capillary action

B. Adhesion

C. Cohesion

D. Surface tension

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Broaching tools are usually made of

A. Cermets

B. High speed steel

C. Tungsten carbide

D. Stellite

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One face of a furnace wall is at 1030°C and the other face is exposed to room temperature (30°C). If the thermal conductivity of furnace wall is 3 W. m^{- 1}. k^-1 and the wall thickness is 0.3 m, the maximum heat loss (in W/m) is

A. 100

B. 900

C. 9000

D. 10000

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Ganister contains maximum percentage of

A. FeO

B. SiO2

C. MgO

D. MnO2

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__________ property of steel increases by addition of large amount of silicon in it.

A. Mechanical

B. Machining

C. Magnetic

D. Refractory

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The stress at which extension of the material takes place more rapidly as compared to the increase in load is termed as the __________ point of the material.

A. Elastic

B. Ultimate

C. Yielding

D. Breaking

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Water hammer is caused in steam carrying pipelines, because of

A. Partial condensation of steam

B. Vibration of the pipeline

C. High degree of superheat of steam

D. Its exposure to torrential rain

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__________ is the hardest oxide and is hence used where high wear resistance at high temperature is required.

A. Beryllium

B. Zirconia

C. Alumina

D. Magnesia

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Runge-Kutta method is used to solve a/an

A. Ordinary differential equation of nth order

B. Simultaneous non-linear equation

C. Linear differential equation

D. None of these

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The ratio of the shear stress to the principal stress on a principal plane is

A. 0

B. 1

C. 1/2

D. 1/3

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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

Discuss this answer

Accepted Answer

C. Specific humidity decreases & dry bulb temperature increases

In chemical dehumidification of air

Correct Answer :

Show all Chemical Engineering Basics MCQ

Related Questions

__________ is the hardest material out of the following.

Out of the following, which will fracture most readity, when hit with a hard hammer?

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

A steam pipe is intended to be insulated with two layers of insulating materials of different thermal conductivities. For minimum heat transfer to take place

Sacrificial anode method is used in the protection of pipelines which are buried underground. Sacrificial anode

Natural water contains approximately __________ percent of heavy water.

Which of the following does not discharge the dust collected as a dry solid?

Filler material used in welding should have __________ as compared to the parent metal to be welded.

Which of the following processes follows the hardening process for reducing the hardening strains & increasing the toughness of the steel part?

Which of the following forces does not act on a fluid at rest?

Corrosion rate cannot be lowered by reducing the __________ of the corroding medium.

Reynolds number of a fluid flowing in a circular pipe is 10,000. What will be the Reynolds number when the fluid velocity is decreased by 30% & the pipe diameter is increased by 30%?

__________ can replace tungsten in high speed steel.

Joining of thin foils is preferred to be done by

Force between the molecules of the same substance is called __________ force.

In a drilling process, the metal is removed by both shearing & extrusion. General purpose drills are made of

__________ of test specimens is not involved in any hardness testing method.

__________ joint is mostly used for joining pipes carrying water at low pressure.

Addition of __________ to steel does not help in improving its machinability.

Property responsible for the talcum powder to cling to the skin is the

Broaching tools are usually made of

One face of a furnace wall is at 1030°C and the other face is exposed to room temperature (30°C). If the thermal conductivity of furnace wall is 3 W. m^{- 1}. k^-1 and the wall thickness is 0.3 m, the maximum heat loss (in W/m) is

Ganister contains maximum percentage of

__________ property of steel increases by addition of large amount of silicon in it.

The stress at which extension of the material takes place more rapidly as compared to the increase in load is termed as the __________ point of the material.

Water hammer is caused in steam carrying pipelines, because of

__________ is the hardest oxide and is hence used where high wear resistance at high temperature is required.

Runge-Kutta method is used to solve a/an

The ratio of the shear stress to the principal stress on a principal plane is

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)?

Also checkout

In chemical dehumidification of air

Correct Answer :

Show all Chemical Engineering Basics MCQ

Related Questions

__________ is the hardest material out of the following.

Out of the following, which will fracture most readity, when hit with a hard hammer?

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

A steam pipe is intended to be insulated with two layers of insulating materials of different thermal conductivities. For minimum heat transfer to take place

Sacrificial anode method is used in the protection of pipelines which are buried underground. Sacrificial anode

Natural water contains approximately __________ percent of heavy water.

Which of the following does not discharge the dust collected as a dry solid?

Filler material used in welding should have __________ as compared to the parent metal to be welded.

Which of the following processes follows the hardening process for reducing the hardening strains & increasing the toughness of the steel part?

Which of the following forces does not act on a fluid at rest?

Corrosion rate cannot be lowered by reducing the __________ of the corroding medium.

Reynolds number of a fluid flowing in a circular pipe is 10,000. What will be the Reynolds number when the fluid velocity is decreased by 30% & the pipe diameter is increased by 30%?

__________ can replace tungsten in high speed steel.

Joining of thin foils is preferred to be done by

Force between the molecules of the same substance is called __________ force.

In a drilling process, the metal is removed by both shearing & extrusion. General purpose drills are made of

__________ of test specimens is not involved in any hardness testing method.

__________ joint is mostly used for joining pipes carrying water at low pressure.

Addition of __________ to steel does not help in improving its machinability.

Property responsible for the talcum powder to cling to the skin is the

Broaching tools are usually made of

One face of a furnace wall is at 1030°C and the other face is exposed to room temperature (30°C). If the thermal conductivity of furnace wall is 3 W. m- 1. k-1 and the wall thickness is 0.3 m, the maximum heat loss (in W/m) is

Ganister contains maximum percentage of

__________ property of steel increases by addition of large amount of silicon in it.

The stress at which extension of the material takes place more rapidly as compared to the increase in load is termed as the __________ point of the material.

Water hammer is caused in steam carrying pipelines, because of

__________ is the hardest oxide and is hence used where high wear resistance at high temperature is required.

Runge-Kutta method is used to solve a/an

The ratio of the shear stress to the principal stress on a principal plane is

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)?

Also checkout

One face of a furnace wall is at 1030°C and the other face is exposed to room temperature (30°C). If the thermal conductivity of furnace wall is 3 W. m^{- 1}. k^-1 and the wall thickness is 0.3 m, the maximum heat loss (in W/m) is

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)?