In troposphere (the weather domain), the temperature 't' at height 'h' above the sea level in metres is given by (where, temperature at sea level is 15°C and t is in °C.)

Question

In troposphere (the weather domain), the temperature 't' at height 'h' above the sea level in metres is given by (where, temperature at sea level is 15°C and t is in °C.)

A. t = 15 - 0.0065 h

B. t = 15 + 0.0065 h

C. t = 0.0035 h - 15

D. t = 15 - 0.0035 h

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Heat required to raise the temperature of a body by 1 °C is called its

A. Heat capacity

B. Specific heat capacity

C. Thermal conductivity

D. Water equivalent

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Air-petrol ratio for maximum power generation in spark ignition engine is about

A. 6 : 1

B. 12 : 1

C. 18 : 1

D. 24 : 1

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The elastic strain energy of a unit length of an edge dislocation as compared to that of a screw dislocation is

A. More

B. Equal

C. Less

D. Double

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Which of the following is an ore dressing operation?

A. Classification

B. Smelting

C. Roasting

D. None of these

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Which of the following fastening devices has its both ends threaded?

A. Bolt

B. Stud

C. Set screw

D. Split nut

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The excess air required for the combustion of pulverised coal is of the order of about __________ percent.

A. 5

B. 15

C. 30

D. 45

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The leaching solvent used in Baeyer's process for the purification of bauxite is

A. Ammonium hydroxide

B. Sodium carbonate

C. Sodium hydroxide

D. Ammonium carbonate

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

Which of the following gases cause global warming?

A. Carbon monoxide

B. Carbon dioxide

C. Nitrogen

D. Ozone

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A. Wet bulb temperature

B. Dry bulb temperature

C. Relative humidity

D. Specific humidity

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Transition from laminar to turbulent zone in free convection heat transfer is governed by the critical value of

A. Grashoff number

B. Grashoff number & Reynolds number

C. Reynolds number

D. Grashoff number & Prandtl number

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A. 370

B. 340

C. 320

D. 300

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A material is capable of resisting softening at high temperature, because of its property termed as

A. Hot temper

B. Hot hardness

C. Fatigue

D. Creep

Discuss this answer

Electrical conductivities of semi-conductors are of the order of __________ ohm/cm.

A. 10^-3

B. 10³

C. 10^-15

D. 10¹⁵

Discuss this answer

Thermal equivalent of electrical power in practical calculation is __________ kcal/kWh.

A. 746

B. 3000

C. 1000

D. 550

Discuss this answer

Ferromagnetic materials owe their properties to __________ inner sub-shells.

A. Completely filled

B. Partially filled

C. Equally filled

D. Vacant

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Oxyacetylene reducing flame is used while carrying out welding on

A. Alloy steel

B. Grey cast iron

C. Mild steel

D. High carbon steel

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The normal stress is the same in all directions at a point in a fluid, only when the fluid

A. Is at rest & has zero viscosity

B. Is frictionless

C. Fluid layer has no motion relative to an adjacent layer of fluid

D. is incompressible & frictionless

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The dew point temperature lines on psychrometric charts are straight inclined sloping downwards to the right. When relative humidity of moist air is 100%, then

A. Wet bulb temperature=dry bulb temperature

B. Wet bulb temperature=dew point temperature

C. Saturation temperature=dew point temperature

D. All 'a', 'b' & 'c'

Discuss this answer

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A. Case carburising

B. Tempering

C. Normalising

D. Annealing

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A. Gamma rays

B. X-rays

C. Microwaves

D. Gas welding

Discuss this answer

An abrupt and sudden fall in the reading of barometer is an indication of the

A. Storm

B. Rain

C. Clear weather

D. Cold wave

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__________ is a special constituent of chlorophyll without which photosynthesis is not possible.

A. Calcium

B. Nitrogen

C. Phosphorous

D. Hydrogen

Discuss this answer

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A. Liquid density

B. Vapour density

C. Temperature difference

D. Heat of evaporation

Discuss this answer

'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

Discuss this answer

Pick out the wrong statement.

A. Seam welding, projection welding & spot welding are the classification of electrical resistance welding

B. Electrode tip in spot welding is of copper and the tip diameter should be equal to t (where, t = plate thickness to be welded)

C. In spot welding, two pieces to be joined are overlapped and placed between two electrodes

D. Mild steel sheet cannot be spot welded

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__________ is used for tying the steel columns to concrete foundation.

A. Grouting

B. Eyebolt

C. Anchor bolts

D. Refractory castables

Discuss this answer

Spheroidising of a material is a/an __________ process.

A. Normalising

B. Annealing

C. Tempering

D. Hardening

Discuss this answer

In case of a, centrifugal pump, the ratio h₁/h₂ is termed as the __________ efficiency (where, h₁ = actual measured head & h₂ = head imparted to the fluid by impeller).

A. Mechanical

B. Overall

C. Volumetric

D. Impeller

Discuss this answer

The temperature at which the magnetic property of iron disappears (i.e., it becomes non-magnetic) and its electrical conductivity & specific heat also changes, is called the 'Curie point', which is __________ °C.

A. 768

B. 908

C. 1400

D. 1539

Discuss this answer

Accepted Answer

A. t = 15 - 0.0065 h

In troposphere (the weather domain), the temperature 't' at height 'h' above the sea level in metres is given by (where, temperature at sea level is 15°C and t is in °C.)

Correct Answer :

Show all Chemical Engineering Basics MCQ

Related Questions

Heat required to raise the temperature of a body by 1 °C is called its

Air-petrol ratio for maximum power generation in spark ignition engine is about

The elastic strain energy of a unit length of an edge dislocation as compared to that of a screw dislocation is

Which of the following is an ore dressing operation?

Which of the following fastening devices has its both ends threaded?

The excess air required for the combustion of pulverised coal is of the order of about __________ percent.

The leaching solvent used in Baeyer's process for the purification of bauxite is

Which of the following is an example of stress corrosion?

Which of the following gases cause global warming?

__________ remains constant during the adiabatic cooling of moist air.

Transition from laminar to turbulent zone in free convection heat transfer is governed by the critical value of

A solid aluminium ball, when quenched in a water bath maintained at 40°C, cools down from 550°C to 450°C in 20 seconds. The expected temperature of the ball after next 20 seconds may be about __________ °C.

A material is capable of resisting softening at high temperature, because of its property termed as

Electrical conductivities of semi-conductors are of the order of __________ ohm/cm.

Thermal equivalent of electrical power in practical calculation is __________ kcal/kWh.

Ferromagnetic materials owe their properties to __________ inner sub-shells.

Oxyacetylene reducing flame is used while carrying out welding on

The normal stress is the same in all directions at a point in a fluid, only when the fluid

The dew point temperature lines on psychrometric charts are straight inclined sloping downwards to the right. When relative humidity of moist air is 100%, then

__________ of hard alloy and tool steel is done to make it easily machinable.

Joining of thin foils is preferred to be done by

An abrupt and sudden fall in the reading of barometer is an indication of the

__________ is a special constituent of chlorophyll without which photosynthesis is not possible.

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

'Flare tower' used in industry is meant for

Pick out the wrong statement.

__________ is used for tying the steel columns to concrete foundation.

Spheroidising of a material is a/an __________ process.

In case of a, centrifugal pump, the ratio h₁/h₂ is termed as the __________ efficiency (where, h₁ = actual measured head & h₂ = head imparted to the fluid by impeller).

The temperature at which the magnetic property of iron disappears (i.e., it becomes non-magnetic) and its electrical conductivity & specific heat also changes, is called the 'Curie point', which is __________ °C.

Also checkout

In troposphere (the weather domain), the temperature 't' at height 'h' above the sea level in metres is given by (where, temperature at sea level is 15°C and t is in °C.)

Correct Answer :

Show all Chemical Engineering Basics MCQ

Related Questions

Heat required to raise the temperature of a body by 1 °C is called its

Air-petrol ratio for maximum power generation in spark ignition engine is about

The elastic strain energy of a unit length of an edge dislocation as compared to that of a screw dislocation is

Which of the following is an ore dressing operation?

Which of the following fastening devices has its both ends threaded?

The excess air required for the combustion of pulverised coal is of the order of about __________ percent.

The leaching solvent used in Baeyer's process for the purification of bauxite is

Which of the following is an example of stress corrosion?

Which of the following gases cause global warming?

__________ remains constant during the adiabatic cooling of moist air.

Transition from laminar to turbulent zone in free convection heat transfer is governed by the critical value of

A solid aluminium ball, when quenched in a water bath maintained at 40°C, cools down from 550°C to 450°C in 20 seconds. The expected temperature of the ball after next 20 seconds may be about __________ °C.

A material is capable of resisting softening at high temperature, because of its property termed as

Electrical conductivities of semi-conductors are of the order of __________ ohm/cm.

Thermal equivalent of electrical power in practical calculation is __________ kcal/kWh.

Ferromagnetic materials owe their properties to __________ inner sub-shells.

Oxyacetylene reducing flame is used while carrying out welding on

The normal stress is the same in all directions at a point in a fluid, only when the fluid

The dew point temperature lines on psychrometric charts are straight inclined sloping downwards to the right. When relative humidity of moist air is 100%, then

__________ of hard alloy and tool steel is done to make it easily machinable.

Joining of thin foils is preferred to be done by

An abrupt and sudden fall in the reading of barometer is an indication of the

__________ is a special constituent of chlorophyll without which photosynthesis is not possible.

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

'Flare tower' used in industry is meant for

Pick out the wrong statement.

__________ is used for tying the steel columns to concrete foundation.

Spheroidising of a material is a/an __________ process.

In case of a, centrifugal pump, the ratio h1/h2 is termed as the __________ efficiency (where, h1 = actual measured head & h2 = head imparted to the fluid by impeller).

The temperature at which the magnetic property of iron disappears (i.e., it becomes non-magnetic) and its electrical conductivity & specific heat also changes, is called the 'Curie point', which is __________ °C.

Also checkout

In case of a, centrifugal pump, the ratio h₁/h₂ is termed as the __________ efficiency (where, h₁ = actual measured head & h₂ = head imparted to the fluid by impeller).