Probability of cavitation occuring becomes very high, when the local __________ resulting in water bubbles formation, which on rupture cause cavitation

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Probability of cavitation occuring becomes very high, when the local __________ resulting in water bubbles formation, which on rupture cause cavitation

A. Pressure falls below the vapour pressure

B. Pressure becomes very high

C. Temperature becomes low

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

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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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Production of one ton of paper in Indian paper industry consumes about __________ kWh of electricity.

A. 300

B. 800

C. 1400

D. 2000

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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

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Out of the following, maximum temperature drop for a given heat flow & for the same thickness will be in the case of

A. Steel

B. Glass wood

C. Copper

D. Fireclay bricks

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Fire refining process is employed in case of

A. Tin

B. Copper

C. Zinc

D. Aluminium

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Which of the following are made out of the carbon steel having carbon content of 0.9 to 1%?

A. Small punches, broaches reamers and springs

B. Cutlery, screws, rivets and files

C. Mandrels, twist drills, small lathe tools and razors

D. Forgings like can shaft, structural steel plate, threading dies and drawing dies

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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

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Current employed in resistance welding ranges from __________ kVA/.

A. 1.2 to 2.5

B. 4.5 to 6.2

C. 7.5 to 8.5

D. 10.5 to 15.5

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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

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Nickel and __________ are the alloying element added in steel to increase its toughness.

A. Molybdenum

B. Chromium

C. Vanadium

D. Silicon

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__________ of austenite decreases the hardenability in steel.

A. Fine grains

B. Coarse grains

C. Homogeneity

D. Dissolved elements (except cobalt)

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Midrex process of sponge iron production uses reformed natural gas as the reducing agent, which uses iron ore in the form of

A. Lumps

B. Pellets

C. Briquettes

D. Sinter

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Addition of silicon to cast iron

A. Promotes graphite module formation

B. Improves its ductility

C. Does not promote graphite flakes formation

D. Increases the fluidity of molten metal

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Steels with high carbon equivalent have poor Weldability, because in these steels during welding

A. Carbon and other alloying elements get oxidised from the weld pool

B. Excessive ferrite forms in the heat affected zone leading to poor toughness of the weld

C. Martensite forms in the heat affected zone leading to poor toughness/ductility of the weld

D. Segregation of carbon and other element occurs in the weld pool leading to poor properties of the weld

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Metallic surveying tapes are made of __________ which has a low co-efficient of expansion & enough strength.

A. Invar

B. Hastelloy

C. Duralumin

D. Monel metal

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Saturated steam at a pressure of 25 kg/cm² is throttled to attain 5 kg/cm². Then the outcoming steam will be

A. Wet

B. Saturated

C. Superheated

D. None of these

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__________ are normally subjected to sub-zero treatment.

A. Highly stressed parts

B. Gauges or precision parts

C. Cold rolled sheets

D. Non machinable materials

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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 wet bulb temperature is lower in dry air than in wet air at the same temperature. A dry bulb thermometer registers a higher temperature than a wet bulb thermometer except at __________ percent relative humidity.

A. 0

B. 100

C. 50

D. None of these

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Which one can be directly solidified from gaseous state without entering into liquid state?

A. Helium

B. Oxygen

C. Carbon dioxide

D. None of these

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Which of the following metals cannot be hot worked at room temperature?

A. Zinc

B. Nickel

C. Lead

D. Tin

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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 pressure outside a bubble/droplet of liquid is __________ the internal pressure.

A. Greater than

B. Less than

C. Equal to

D. Unpredictable; depends on the bubble size

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The capacity of a spring to store energy is called the spring form co-efficient. Stiffness of a spring is measured by the

A. Ability to absorb shock

B. Capacity to store energy

C. Ratio of the wire & coil diameters

D. Load to produce unit deflection

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The maximum stress below which a material can withstand an infinite number of cycle of stress, is termed as the

A. Fatigue strength

B. Creep strength

C. Resilience

D. Endurance limit

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The materials which fracture even at small strains are termed as brittle, while those materials which exhibit an appreciable deformation before failure are termed as

A. Rigid

B. Tough

C. Ductile

D. Plastic

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Maximum heat dissipation occurs from a steel wire (k = 0.5 W/m. k) of 15 mm diameter exposed to air (h = 20W/m² .k), when the insulation thickness is __________ mm.

A. 15

B. 25

C. 10

D. 30

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__________ is a non volatile film forming constituent of a paint.

A. Thinner

B. Dryer

C. Drying oil

D. None of these

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Which of the following is not a principal alloying element for the structural steel?

A. Molybdenum

B. Nickel

C. Manganese

D. Chromium

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Hot dipping process is used for coating a low melting point metal (e.g. Pb, Sn, Zn) on iron, steel & copper having relatively higher melting points. Which of the following is not a hot dipping process?

A. Galvanising

B. Tinning

C. Sherardizing

D. None of these

Discuss this answer

Accepted Answer

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

Probability of cavitation occuring becomes very high, when the local __________ resulting in water bubbles formation, which on rupture cause cavitation

Correct Answer :

Show all Chemical Engineering Basics MCQ

Related Questions

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

Production of one ton of paper in Indian paper industry consumes about __________ kWh of electricity.

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

Out of the following, maximum temperature drop for a given heat flow & for the same thickness will be in the case of

Fire refining process is employed in case of

Which of the following are made out of the carbon steel having carbon content of 0.9 to 1%?

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

Current employed in resistance welding ranges from __________ kVA/.

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

Nickel and __________ are the alloying element added in steel to increase its toughness.

__________ of austenite decreases the hardenability in steel.

Midrex process of sponge iron production uses reformed natural gas as the reducing agent, which uses iron ore in the form of

Addition of silicon to cast iron

Steels with high carbon equivalent have poor Weldability, because in these steels during welding

Metallic surveying tapes are made of __________ which has a low co-efficient of expansion & enough strength.

Saturated steam at a pressure of 25 kg/cm² is throttled to attain 5 kg/cm². Then the outcoming steam will be

__________ are normally subjected to sub-zero treatment.

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 wet bulb temperature is lower in dry air than in wet air at the same temperature. A dry bulb thermometer registers a higher temperature than a wet bulb thermometer except at __________ percent relative humidity.

Which one can be directly solidified from gaseous state without entering into liquid state?

Which of the following metals cannot be hot worked at room temperature?

Oxyacetylene reducing flame is used while carrying out welding on

The pressure outside a bubble/droplet of liquid is __________ the internal pressure.

The capacity of a spring to store energy is called the spring form co-efficient. Stiffness of a spring is measured by the

The maximum stress below which a material can withstand an infinite number of cycle of stress, is termed as the

The materials which fracture even at small strains are termed as brittle, while those materials which exhibit an appreciable deformation before failure are termed as

Maximum heat dissipation occurs from a steel wire (k = 0.5 W/m. k) of 15 mm diameter exposed to air (h = 20W/m² .k), when the insulation thickness is __________ mm.

__________ is a non volatile film forming constituent of a paint.

Which of the following is not a principal alloying element for the structural steel?

Hot dipping process is used for coating a low melting point metal (e.g. Pb, Sn, Zn) on iron, steel & copper having relatively higher melting points. Which of the following is not a hot dipping process?

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Probability of cavitation occuring becomes very high, when the local __________ resulting in water bubbles formation, which on rupture cause cavitation

Correct Answer :

Show all Chemical Engineering Basics MCQ

Related Questions

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

Production of one ton of paper in Indian paper industry consumes about __________ kWh of electricity.

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

Out of the following, maximum temperature drop for a given heat flow & for the same thickness will be in the case of

Fire refining process is employed in case of

Which of the following are made out of the carbon steel having carbon content of 0.9 to 1%?

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

Current employed in resistance welding ranges from __________ kVA/.

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

Nickel and __________ are the alloying element added in steel to increase its toughness.

__________ of austenite decreases the hardenability in steel.

Midrex process of sponge iron production uses reformed natural gas as the reducing agent, which uses iron ore in the form of

Addition of silicon to cast iron

Steels with high carbon equivalent have poor Weldability, because in these steels during welding

Metallic surveying tapes are made of __________ which has a low co-efficient of expansion & enough strength.

Saturated steam at a pressure of 25 kg/cm2 is throttled to attain 5 kg/cm2. Then the outcoming steam will be

__________ are normally subjected to sub-zero treatment.

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 wet bulb temperature is lower in dry air than in wet air at the same temperature. A dry bulb thermometer registers a higher temperature than a wet bulb thermometer except at __________ percent relative humidity.

Which one can be directly solidified from gaseous state without entering into liquid state?

Which of the following metals cannot be hot worked at room temperature?

Oxyacetylene reducing flame is used while carrying out welding on

The pressure outside a bubble/droplet of liquid is __________ the internal pressure.

The capacity of a spring to store energy is called the spring form co-efficient. Stiffness of a spring is measured by the

The maximum stress below which a material can withstand an infinite number of cycle of stress, is termed as the

The materials which fracture even at small strains are termed as brittle, while those materials which exhibit an appreciable deformation before failure are termed as

Maximum heat dissipation occurs from a steel wire (k = 0.5 W/m. k) of 15 mm diameter exposed to air (h = 20W/m2 .k), when the insulation thickness is __________ mm.

__________ is a non volatile film forming constituent of a paint.

Which of the following is not a principal alloying element for the structural steel?

Hot dipping process is used for coating a low melting point metal (e.g. Pb, Sn, Zn) on iron, steel & copper having relatively higher melting points. Which of the following is not a hot dipping process?

Also checkout

Saturated steam at a pressure of 25 kg/cm² is throttled to attain 5 kg/cm². Then the outcoming steam will be

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)

Maximum heat dissipation occurs from a steel wire (k = 0.5 W/m. k) of 15 mm diameter exposed to air (h = 20W/m² .k), when the insulation thickness is __________ mm.