A particle is settling in a liquid under Stokesian conditions. The free falling velocity of the particle is proportional to

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A particle is settling in a liquid under Stokesian conditions. The free falling velocity of the particle is proportional to

A. √(Particle diameter)

B. Particle diameter

C. (Particle diameter)²

D. (Particle diameter)³

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A furnace is made of a refractory brick wall of thickness 0.5 metre and thermal conductivity 0.7 W/m.°K For the same temperature drop and heat loss, this refractory wall can be replaced by a layer of diatomaceous earth of thermal conductivity 0.14 W/m.K and thickness __________ metre.

A. 0.01

B. 0.1

C. 0.25

D. 0.5

Discuss this answer

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

A. Flanged iron

B. Collar

C. Flexible

D. Expansion

Discuss this answer

Velocity of a gas in sound is not proportional to (where, T = Absolute temperature of the gas. P = Absolute pressure of the gas. y = Ratio of specific heats (Cp/Cv) ρ = specific weight of the gas)

A. √T

B. 1/√P

C. √y

D. 1/√ρ

Discuss this answer

Nusselt number is related to the Reynolds number (Re) in turbulent & laminar flow respectively as

A. Re^0.5, Re^0.8

B. Re^0.8, Re^-0.5

C. Re^0.8, Re^0.5

D. Re^-0.8, Re^0.5

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Transition from laminar flow to turbulent flow in fluid flow through a pipe does not depend upon the

A. Length of the pipe

B. Diameter of the pipe

C. Density of the fluid

D. Velocity of the fluid

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Hydrogen can be

A. Used in I.C. engines as fuel

B. Liquefied & stored under cryogenic conditions

C. Produced by electrolysis of water

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

Discuss this answer

Laser is a device to produce

A. Gamma rays

B. Microwaves

C. A beam of white light

D. A beam of coherent light

Discuss this answer

The difference in one unit of Rockwell hardness number corresponds to a difference in the depth of indentation of __________ mm.

A. 0.001

B. 0.01

C. 0.002

D. 0.02

Discuss this answer

The condition of diffraction from a crystal is given by

A. nλ = 2d Sin θ

B. λ = d Sin 2θ

C. λ = 2d Sin 2θ

D. nλ = d Sin θ

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The dew point of moist air becomes __________ with decrease in its relative humidity.

A. Less than the wet bulb temperature

B. More than the wet bulb temperature

C. More than the dry bulb temperature

D. Equal to wet bulb temperature

Discuss this answer

The pressure drop per unit length for laminar flow of fluid through a long pipe is proportional to (where, A = cross-sectional area of the pipe & D = Diameter of the pipe)

A. A

B. D

C. 1/A

D. 1/A²

Discuss this answer

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

Discuss this answer

Chlorine acts as a bleaching agent only in the presence of

A. Dry air

B. Pure oxygen

C. Moisture

D. Sunlight

Discuss this answer

The most suitable material for die casting is

A. Iron

B. Copper

C. Steel

D. Nickel

Discuss this answer

As per the Indian boiler regulation (IBR), the type of joint preferred for the circumferential joint is the __________ joint.

A. Butt

B. Lap

C. Welded

D. None of these

Discuss this answer

The co-ordination number in simple cubic structure is

A. 4

B. 6

C. 8

D. 12

Discuss this answer

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)

Discuss this answer

Pick out the wrong statement about nucleate boiling.

A. Bubble generation is by expansion of entrapped gas/vapour at small cavities in the surface

B. Surface temperature is greater than the saturation temperature of the liquid

C. Heat transfer from the surface of the liquid is less than that in film boiling

D. The temperature is less than that of film boiling

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Which of the following is not used as a bearing material?

A. Copper-lead alloys

B. Babbitts

C. Bronzes

D. Cermets

Discuss this answer

Specific __________ is a dimensionless quantity.

A. Heat

B. Humidity

C. Weight

D. None of these

Discuss this answer

The __________ of a double acting reciprocating pump as compared to the single acting pump will be almost double.

A. Flow output

B. Head developed

C. Overall efficiency

D. Weight

Discuss this answer

Steel balls are manufactured by

A. Sintering

B. Casting

C. Cold heading

D. Spinning

Discuss this answer

Aluminium is extracted from

A. Chalcocite

B. Bauxite

C. Galena

D. None of these

Discuss this answer

At the point of boundary layer separation in fluid flow, the

A. Shear stress is maximum

B. Velocity gradient is flat

C. Density variation is maximum

D. Shear stress is zero

Discuss this answer

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

Discuss this answer

In case of simple harmonic motion, displacement is proportional to the

A. Velocity

B. Acceleration

C. Both (A) & (B)

D. Neither (A) nor (B)

Discuss this answer

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

A. Wet steam

B. Saturated steam

C. Superheated steam

D. Saturated water

Discuss this answer

The maximum thickness of the metal which can be welded using ultrasonic welding is __________ mm.

A. 0.5

B. 3

C. 10

D. 25

Discuss this answer

Shampoos are commercially not available in the form of

A. Powder

B. Gaseous mixture

C. Solution

D. Emulsion

Discuss this answer

Which of the following has the highest modulus of elasticity (about 7 × 10⁶ kg/cm²)?

A. High speed steel

B. Stainless steel

C. Tungsten carbide

D. Superalloys

Discuss this answer

Accepted Answer

B. Particle diameter

A particle is settling in a liquid under Stokesian conditions. The free falling velocity of the particle is proportional to

Correct Answer :

Show all Chemical Engineering Basics MCQ

Related Questions

A furnace is made of a refractory brick wall of thickness 0.5 metre and thermal conductivity 0.7 W/m.°K For the same temperature drop and heat loss, this refractory wall can be replaced by a layer of diatomaceous earth of thermal conductivity 0.14 W/m.K and thickness __________ metre.

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

Velocity of a gas in sound is not proportional to (where, T = Absolute temperature of the gas. P = Absolute pressure of the gas. y = Ratio of specific heats (Cp/Cv) ρ = specific weight of the gas)

Nusselt number is related to the Reynolds number (Re) in turbulent & laminar flow respectively as

Transition from laminar flow to turbulent flow in fluid flow through a pipe does not depend upon the

Hydrogen can be

Laser is a device to produce

The difference in one unit of Rockwell hardness number corresponds to a difference in the depth of indentation of __________ mm.

The condition of diffraction from a crystal is given by

The dew point of moist air becomes __________ with decrease in its relative humidity.

The pressure drop per unit length for laminar flow of fluid through a long pipe is proportional to (where, A = cross-sectional area of the pipe & D = Diameter of the pipe)

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

Chlorine acts as a bleaching agent only in the presence of

The most suitable material for die casting is

As per the Indian boiler regulation (IBR), the type of joint preferred for the circumferential joint is the __________ joint.

The co-ordination number in simple cubic structure is

Which of the following is an example of stress corrosion?

Pick out the wrong statement about nucleate boiling.

Which of the following is not used as a bearing material?

Specific __________ is a dimensionless quantity.

The __________ of a double acting reciprocating pump as compared to the single acting pump will be almost double.

Steel balls are manufactured by

Aluminium is extracted from

At the point of boundary layer separation in fluid flow, the

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

In case of simple harmonic motion, displacement is proportional to the

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

The maximum thickness of the metal which can be welded using ultrasonic welding is __________ mm.

Shampoos are commercially not available in the form of

Which of the following has the highest modulus of elasticity (about 7 × 10⁶ kg/cm²)?

Also checkout

A particle is settling in a liquid under Stokesian conditions. The free falling velocity of the particle is proportional to

Correct Answer :

Show all Chemical Engineering Basics MCQ

Related Questions

A furnace is made of a refractory brick wall of thickness 0.5 metre and thermal conductivity 0.7 W/m.°K For the same temperature drop and heat loss, this refractory wall can be replaced by a layer of diatomaceous earth of thermal conductivity 0.14 W/m.K and thickness __________ metre.

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

Velocity of a gas in sound is not proportional to (where, T = Absolute temperature of the gas. P = Absolute pressure of the gas. y = Ratio of specific heats (Cp/Cv) ρ = specific weight of the gas)

Nusselt number is related to the Reynolds number (Re) in turbulent & laminar flow respectively as

Transition from laminar flow to turbulent flow in fluid flow through a pipe does not depend upon the

Hydrogen can be

Laser is a device to produce

The difference in one unit of Rockwell hardness number corresponds to a difference in the depth of indentation of __________ mm.

The condition of diffraction from a crystal is given by

The dew point of moist air becomes __________ with decrease in its relative humidity.

The pressure drop per unit length for laminar flow of fluid through a long pipe is proportional to (where, A = cross-sectional area of the pipe & D = Diameter of the pipe)

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

Chlorine acts as a bleaching agent only in the presence of

The most suitable material for die casting is

As per the Indian boiler regulation (IBR), the type of joint preferred for the circumferential joint is the __________ joint.

The co-ordination number in simple cubic structure is

Which of the following is an example of stress corrosion?

Pick out the wrong statement about nucleate boiling.

Which of the following is not used as a bearing material?

Specific __________ is a dimensionless quantity.

The __________ of a double acting reciprocating pump as compared to the single acting pump will be almost double.

Steel balls are manufactured by

Aluminium is extracted from

At the point of boundary layer separation in fluid flow, the

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

In case of simple harmonic motion, displacement is proportional to the

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

The maximum thickness of the metal which can be welded using ultrasonic welding is __________ mm.

Shampoos are commercially not available in the form of

Which of the following has the highest modulus of elasticity (about 7 × 106 kg/cm2)?

Also checkout

Which of the following has the highest modulus of elasticity (about 7 × 10⁶ kg/cm²)?