Out of the following, the joint produced by __________ has the lowest strength.

Question

Out of the following, the joint produced by __________ has the lowest strength.

A. Soldering

B. Welding

C. Brazing

D. Riveting

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Ammonia gas can be dried by

A. PCl₅

B. Quick lime

C. CaCl₂

D. Concentrated H₂SO₄

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Hot extrusion process is not used for making

A. Cast iron pipe for domestic water supply

B. Aluminium curtain rods

C. Stainless steel tubes used in furnitures

D. Any of these

Discuss this answer

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

Discuss this answer

Heat transfer to the water wall in a high pressure water wall type boiler furnace is mainly by

A. Conduction

B. Convection

C. Radiation

D. Both 'a' & 'b'

Discuss this answer

In practice, the compression ratio of compression-ignition (CI) engine ranges from

A. 15 to 25

B. 5 to 10

C. 40 to 55

D. 60 to 70

Discuss this answer

Projection welding & stud welding is categorised as the __________ welding.

A. Pressure

B. Thermit

C. Resistance

D. Arc

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__________ has a negative co-efficient of linear expansion.

A. Iron

B. Copper

C. Rubber

D. Nickel

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Magnetic permeability of iron is increased by its

A. Decarburising

B. Alloying with cobalt

C. Purification

D. Alternate heating & cooling

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Which of the following is a boiler accessory
i.e., not a boiler mounting?

A. Blow off cock

B. Feed check valve

C. Feed water pump

D. Stop valve

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Dislocations are __________ defects.

A. Point

B. Line

C. Volume

D. None of these

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Reduction in the grain size reduces the __________ of the material.

A. Fatigue resistance

B. Tensile strength

C. Creep resistance

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

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Non-ferrous alloys used for making cutting tools need not have high

A. Abrasion resistance

B. Toughness

C. Red hardness

D. Cutting speed

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With increase in temperature, the surface tension of water

A. Increases

B. Decreases

C. Remain constant

D. Increases linearly

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Pick out the correct statement about the condensation.

A. Filmwise condensation gives a lower heat transfer rate than the dropwise condensation

B. Suitable coating or vapour additive is used to promote film wise condensation

C. If a condensing liquid does not wet the surface dropwise, even then condensation will take place on it

D. Reynolds number of condensing liquid is based on its mass flow rate

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The most economical channel section for the fluid flow is the one for which the discharge is maximum for a given cross-sectional area. Vertical velocity distribution in an open channel for laminar flow can be assumed to be

A. Parabolic

B. Hyperbolic

C. Straight line

D. None of these

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Half life of a radioactive isotope corresponds to the time required for half of the __________ to decay.

A. Atoms

B. Neutrons

C. Nucleons

D. Electrons

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A thin, flat & square plate measuring 2 m × 2 m is freely hanging in ambient air at 25°C. It is exposed to the solar radiation falling on one side of the plate at the rate of 500 W/m². The plate temperature will remain constant at 30°C, if the convective heat transfer co-efficient is __________ W/m² °C.

A. 50

B. 100

C. 150

D. 200

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The majority charge carriers in p-type silicon are

A. Free electrons

B. Ions

C. Conduction electrons

D. Holes

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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

Discuss this answer

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. 370

B. 340

C. 320

D. 300

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Co-efficient of performance of a Carnot cycle refrigerator operating between - 23°C and + 27°C is

A. 3

B. 5

C. 0.5

D. 1.5

Discuss this answer

Pick out the correct statement.

A. Hot worked materials are subjected to annealing to remove internal stresses

B. Annealing of steel hardens it slightly

C. Normalising of a material induces stresses

D. Tempering of a material improves ductility & toughness but reduces hardness & brittleness

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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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Annealing of cast iron

A. Softens it to facilitate machining

B. Decreases the free carbon

C. Increases the strength

D. None of these

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Which of the following performance characteristics of a S.I engine is not affected by the front end volatility of the petrol used?

A. Vapour locking

B. Hot starting

C. Spark plug fouling

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

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__________ glass is used in the mercury in glass thermometer meant for measuring a temperature of 500°C.

A. Borosilicate

B. High silica

C. Supermax

D. Lead

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The passage between the nozzle and the __________ is called 'sprue' in case of injection moulding.

A. Runner

B. Cylinder

C. Mold

D. None of these

Discuss this answer

The most important requirement for aluminium industry is the availability of cheap

A. Ore

B. Electrical power

C. Labour

D. Abundant water

Discuss this answer

Powder metallurgy process does not make metal powder by

A. Atomisation

B. Grinding/milling

C. Hammering

D. Electrolytic deposition

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For efficient performance of a blast furnace, the extent of reduction of Wustite (F_eO) should be

A. 100% indirect reduction

B. 100% direct reduction

C. 50-60% indirect reduction

D. 30-40% indirect reduction

Discuss this answer

Accepted Answer

A. Soldering

Out of the following, the joint produced by __________ has the lowest strength.

Correct Answer :

Show all Chemical Engineering Basics MCQ

Related Questions

Ammonia gas can be dried by

Hot extrusion process is not used for making

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

Heat transfer to the water wall in a high pressure water wall type boiler furnace is mainly by

In practice, the compression ratio of compression-ignition (CI) engine ranges from

Projection welding & stud welding is categorised as the __________ welding.

__________ has a negative co-efficient of linear expansion.

Magnetic permeability of iron is increased by its

Which of the following is a boiler accessory
i.e., not a boiler mounting?

Dislocations are __________ defects.

Reduction in the grain size reduces the __________ of the material.

Non-ferrous alloys used for making cutting tools need not have high

With increase in temperature, the surface tension of water

Pick out the correct statement about the condensation.

The most economical channel section for the fluid flow is the one for which the discharge is maximum for a given cross-sectional area. Vertical velocity distribution in an open channel for laminar flow can be assumed to be

Half life of a radioactive isotope corresponds to the time required for half of the __________ to decay.

The majority charge carriers in p-type silicon are

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

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.

Co-efficient of performance of a Carnot cycle refrigerator operating between - 23°C and + 27°C is

Pick out the correct statement.

Which of the following metals reacts violently with water?

Annealing of cast iron

Which of the following performance characteristics of a S.I engine is not affected by the front end volatility of the petrol used?

__________ glass is used in the mercury in glass thermometer meant for measuring a temperature of 500°C.

The passage between the nozzle and the __________ is called 'sprue' in case of injection moulding.

The most important requirement for aluminium industry is the availability of cheap

Powder metallurgy process does not make metal powder by

For efficient performance of a blast furnace, the extent of reduction of Wustite (F_eO) should be

Also checkout

Out of the following, the joint produced by __________ has the lowest strength.

Correct Answer :

Show all Chemical Engineering Basics MCQ

Related Questions

Ammonia gas can be dried by

Hot extrusion process is not used for making

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

Heat transfer to the water wall in a high pressure water wall type boiler furnace is mainly by

In practice, the compression ratio of compression-ignition (CI) engine ranges from

Projection welding & stud welding is categorised as the __________ welding.

__________ has a negative co-efficient of linear expansion.

Magnetic permeability of iron is increased by its

Which of the following is a boiler accessory i.e., not a boiler mounting?

Dislocations are __________ defects.

Reduction in the grain size reduces the __________ of the material.

Non-ferrous alloys used for making cutting tools need not have high

With increase in temperature, the surface tension of water

Pick out the correct statement about the condensation.

The most economical channel section for the fluid flow is the one for which the discharge is maximum for a given cross-sectional area. Vertical velocity distribution in an open channel for laminar flow can be assumed to be

Half life of a radioactive isotope corresponds to the time required for half of the __________ to decay.

The majority charge carriers in p-type silicon are

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

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.

Co-efficient of performance of a Carnot cycle refrigerator operating between - 23°C and + 27°C is

Pick out the correct statement.

Which of the following metals reacts violently with water?

Annealing of cast iron

Which of the following performance characteristics of a S.I engine is not affected by the front end volatility of the petrol used?

__________ glass is used in the mercury in glass thermometer meant for measuring a temperature of 500°C.

The passage between the nozzle and the __________ is called 'sprue' in case of injection moulding.

The most important requirement for aluminium industry is the availability of cheap

Powder metallurgy process does not make metal powder by

For efficient performance of a blast furnace, the extent of reduction of Wustite (FeO) should be

Also checkout

Which of the following is a boiler accessory
i.e., not a boiler mounting?

For efficient performance of a blast furnace, the extent of reduction of Wustite (F_eO) should be