When dry bulb temperature & wet bulb temperature of moist air is the same, it means that the

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When dry bulb temperature & wet bulb temperature of moist air is the same, it means that the

A. Partial pressure of water vapour is less than the total pressure

B. Humidity is < 100% & dew point temperature of air has not reached

C. Dew point temperature of air has not reached & air is not saturated fully

D. Air is fully saturated

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Bad odour in sanitary latrines is reduced by periodically sprinkling

A. Bleaching powder

B. Lime powder

C. Aluminium sulphate

D. None of these

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Which of the following gases cause global warming?

A. Carbon monoxide

B. Carbon dioxide

C. Nitrogen

D. Ozone

Discuss this answer

The refractory brick which has good thermal shock resistance at high temperature but cracks on cooling below 400°C is

A. Magnesite

B. Chrome

C. Silica

D. Fireclay

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'Flare tower' used in industry is meant for

A. Venting off (after burning) the excess inflammable/toxic gases at high pressure

B. Absorbing the pollutant gases from the furnace exhaust

C. Cooling of furnace exhaust gases

D. None of these

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The product out from a cupola is called

A. Wrought iron

B. Pig iron

C. Cast iron

D. None of these

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The two elements required to form substitutional solid solution should not have

A. Same crystalline structure

B. Same valency

C. Widely differing electronegativity

D. Same atomic sizes

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Cupola produces __________ iron.

A. Pig

B. Cast

C. Wrought

D. Carbon free

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The most serious manufacturing defect from fracture toughness point of view is

A. Surface roughness

B. Pores

C. Spherical inclusion

D. Crack

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Ganister contains maximum percentage of

A. FeO

B. SiO2

C. MgO

D. MnO2

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The bolt is subjected to __________ when the nut is tightened by putting the washer beneath it.

A. Tension

B. Shear

C. Compression

D. Bending & tension

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The property of material, by which a given amount of energy is absorbed by it, without plastic deformation, is called

A. Resilience

B. Toughness

C. Ductility

D. Impact strength

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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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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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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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Which of the following metals reacts violently with water?

A. Mercury

B. Sodium

C. Calcium

D. Magnesium

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Limestone is added in the blast furnace (during pig iron manufacture) to

A. Form slag by combining with impurities

B. Supply heat by undergoing exothermic reaction with impurities

C. Reduce the coke consumption

D. Reduce slag viscosity

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When the wavelength of incident X-rays increases, the angle of diffraction

A. Decreases

B. Increases

C. Remain constant

D. Shows no systematic variation

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The most important consideration, while designing the refrigeration system of an aircraft is that the refrigeration system

A. Is as light as possible

B. Has very high C.O.P.

C. Employs minimum quantity of refrigerant

D. Consumer minimum horse power

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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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Chlorine acts as a bleaching agent only in the presence of

A. Dry air

B. Pure oxygen

C. Moisture

D. Sunlight

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Angular displacement can be measured suitably by a

A. Shaft encoder

B. Linear variable differential transducer (LVDT)

C. Stroboscope

D. Tachometer

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In multipass welds, shot peening is done after each pass to

A. Close the surface porosity

B. Break the continuity of columnar grains

C. Flatten the weldment

D. Introduce texture in the weld

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A semi-conductor is damaged & behaves like a conductor, on passing a strong electric current through it, because it heats up the crystals & breaks the covalent bonds resulting in __________ electrons.

A. Lack of free

B. Excess of

C. Decrease in

D. None of these

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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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Galvanic corrosion cannot be prevented by

A. Cathodic protection

B. Anodic protection

C. Usage of largest possible anodic area

D. Any one of these

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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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Liquid nitrogen containers can be made from

A. Ferritic stainless steel

B. HSLA steel

C. Titanium

D. Austenitic stainless steel

Discuss this answer

Pick out the wrong statement.

A. A soft magnetic material should have high permeability and small area of hysteresis loop

B. Poisson's ratio of high melting point metals is more than unity

C. Solders generally melt at less than 185°C

D. Steel produced by B.O.F process is ideally suited for manufacturing flat product

Discuss this answer

Water flow in the river during flood can be categorised as the __________ flow.

A. Unsteady uniform

B. Unsteady non-uniform

C. Steady uniform

D. Steady non-uniform

Discuss this answer

Material of construction of foundry crucible is

A. Lead

B. Stainless steel

C. Graphite

D. Cast iron

Discuss this answer

Accepted Answer

D. Air is fully saturated

When dry bulb temperature & wet bulb temperature of moist air is the same, it means that the

Correct Answer :

Show all Chemical Engineering Basics MCQ

Related Questions

Bad odour in sanitary latrines is reduced by periodically sprinkling

Which of the following gases cause global warming?

The refractory brick which has good thermal shock resistance at high temperature but cracks on cooling below 400°C is

'Flare tower' used in industry is meant for

The product out from a cupola is called

The two elements required to form substitutional solid solution should not have

Cupola produces __________ iron.

The most serious manufacturing defect from fracture toughness point of view is

Ganister contains maximum percentage of

The bolt is subjected to __________ when the nut is tightened by putting the washer beneath it.

The property of material, by which a given amount of energy is absorbed by it, without plastic deformation, is called

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

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.

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

Which of the following metals reacts violently with water?

Limestone is added in the blast furnace (during pig iron manufacture) to

When the wavelength of incident X-rays increases, the angle of diffraction

The most important consideration, while designing the refrigeration system of an aircraft is that the refrigeration system

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

Chlorine acts as a bleaching agent only in the presence of

Angular displacement can be measured suitably by a

In multipass welds, shot peening is done after each pass to

A semi-conductor is damaged & behaves like a conductor, on passing a strong electric current through it, because it heats up the crystals & breaks the covalent bonds resulting in __________ electrons.

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)

Galvanic corrosion cannot be prevented by

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

Liquid nitrogen containers can be made from

Pick out the wrong statement.

Water flow in the river during flood can be categorised as the __________ flow.

Material of construction of foundry crucible is

Also checkout

When dry bulb temperature & wet bulb temperature of moist air is the same, it means that the

Correct Answer :

Show all Chemical Engineering Basics MCQ

Related Questions

Bad odour in sanitary latrines is reduced by periodically sprinkling

Which of the following gases cause global warming?

The refractory brick which has good thermal shock resistance at high temperature but cracks on cooling below 400°C is

'Flare tower' used in industry is meant for

The product out from a cupola is called

The two elements required to form substitutional solid solution should not have

Cupola produces __________ iron.

The most serious manufacturing defect from fracture toughness point of view is

Ganister contains maximum percentage of

The bolt is subjected to __________ when the nut is tightened by putting the washer beneath it.

The property of material, by which a given amount of energy is absorbed by it, without plastic deformation, is called

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

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.

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

Which of the following metals reacts violently with water?

Limestone is added in the blast furnace (during pig iron manufacture) to

When the wavelength of incident X-rays increases, the angle of diffraction

The most important consideration, while designing the refrigeration system of an aircraft is that the refrigeration system

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

Chlorine acts as a bleaching agent only in the presence of

Angular displacement can be measured suitably by a

In multipass welds, shot peening is done after each pass to

A semi-conductor is damaged & behaves like a conductor, on passing a strong electric current through it, because it heats up the crystals & breaks the covalent bonds resulting in __________ electrons.

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)

Galvanic corrosion cannot be prevented by

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

Liquid nitrogen containers can be made from

Pick out the wrong statement.

Water flow in the river during flood can be categorised as the __________ flow.

Material of construction of foundry crucible is

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

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)