Drossing is a __________ operation.

Question

Drossing is a __________ operation.

A. Smelting

B. Dressing

C. Roasting

D. Dressing

Share this question with your friends

Show all Chemical Engineering Basics MCQ

Comment

'Amortization' in respect of financial obligation of a company means the

A. Liquidation of financial obligations on instalment basis

B. Commitment of financial obligation on priority

C. Liquidation of all the obsolete equipments of the company

D. Modernisation of the plant equipments

Discuss this answer

A dummy activity is used in PERT network to describe the

A. Precedence relationship

B. Resource idleness

C. Resource restriction

D. Necessary time delay

Discuss this answer

Which of the following emissions in the exhaust gas of an I.C. engine causes the formation of photochemical smog?

A. Nitrogen oxides

B. Hydrocarbons

C. Both 'a' & 'b'

D. Carbon monoxide

Discuss this answer

Drossing is a __________ operation.

A. Smelting

B. Dressing

C. Roasting

D. Dressing

Discuss this answer

Dies for wire drawing are generally made of

A. Mild steel

B. Stainless steel

C. Carbides

D. High carbon steel

Discuss this answer

The Al₂O₃ content of cryolite in Hall- Heroult cell is maintained between __________ percent.

A. 2-5

B. 18-20

C. 12-15

D. 6-12

Discuss this answer

Particle nature of cathode rays is proved due to the fact that they

A. Travel in a straight line

B. Get deflected by magnetic electric field

C. Produce fluorescence

D. Heat the exposed material

Discuss this answer

The emf of a Deniell cell Zn | Zn²⁺ || Cu²⁺ | Cu can be increased by

A. Decreasing the surface area of the electrodes

B. Increasing the concentration of zinc sulphate solution

C. Increasing the surface area of the electrodes

D. Increasing the concentration of copper sulphate solution

Discuss this answer

The value of for air & most common gases can be safely assumed to be

A. 0.8

B. 1

C. 1.4

D. 1.8

Discuss this answer

Babbitt lining is used on brass/bronze bearings to increase the

A. Antifriction properties

B. Compressive strength

C. Bearing resistance

D. Wear resistance

Discuss this answer

Materials having resistivity ranging from 1 to 100 ohm. cm is termed as

A. Conductor

B. Insulator

C. Semi-conductor

D. None of these

Discuss this answer

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

Discuss this answer

__________ furnace is generally used in the non-ferrous foundries.

A. Direct arc

B. Indirect arc

C. Resistance

D. Induction

Discuss this answer

Liquor poisoning generally occurs due to the presence of __________ in it.

A. Ethyl alcohol

B. Impurities

C. Methyl alcohol

D. Carbonic acid

Discuss this answer

Minimum thermal efficiency of a steam boiler may be around __________ percent

A. 25

B. 45

C. 65

D. 20

Discuss this answer

Quartz is a __________ material.

A. Diamagnetic

B. Ferromagnetic

C. Ferroelectric

D. Piezoelectric

Discuss this answer

Which of the following phenomenon/ phenomena is/are diffusion controlled?

A. Dislocation climb

B. Cross-slip

C. Twinning

D. Recrystallisation

Discuss this answer

Shaft/rotor speed is most accurately measured by a

A. Frequency counter

B. Tachometer

C. Strobometer

D. Speedometer

Discuss this answer

Pearlite comprises of

A. 87% cementite & 13% Fe

B. 87% ferrite & 13% cementite

C. 93.33% ferrite & 6.67% C

D. 87% ferrite & 13% C

Discuss this answer

Silicon percentage in the silicon steel used for electrical appliances/equipments is

A. 0.3-0.4

B. 12-14

C. 3-4

D. 20-25

Discuss this answer

__________ property of steel increases by addition of large amount of silicon in it.

A. Mechanical

B. Machining

C. Magnetic

D. Refractory

Discuss this answer

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

Discuss this answer

On being hit with a hammer, __________ will readily fracture.

A. Brass

B. Mild steel

C. Cast iron

D. Lead

Discuss this answer

Corona discharge is related to the operation of a/an

A. Induction motor

B. Electrostatic precipitator

C. Fast breeder reactor

D. Magneto hydrodynamic generator (MHD)

Discuss this answer

With increase in temperature, the electrical conductivity of semiconductors

A. Increases

B. Decreases

C. Remain constant

D. Either (A) or (B), depends on the type of semi-conductor

Discuss this answer

Change in volume of metals from absolute zero temperature to their melting points is

A. Almost same for all metals

B. Different for different metals

C. Less for low melting point metals

D. Less for high melting point metals

Discuss this answer

Which of the following forces does not act on a fluid at rest?

A. Viscous force

B. Gravity force

C. Hydrostatic force

D. Surface tension force

Discuss this answer

Frother is added in the froth floatation cell used in ore beneficiation to stabilise the air bubbles (i.e., froth), which will hold the ore particles, but it does not affect the floatability of minerals. Which of the following is not used as a frother?

A. Cresylic acid

B. Xanthaies

C. Pine oil

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

Discuss this answer

Glycerine is used as a coolant in cooling of some engines instead of water, because

A. Its higher boiling point (290°C) increases its heat carrying capacity

B. Comparatively less weight of coolant is required

C. Smaller radiator can be used

D. All a, b & c

Discuss this answer

Air/fuel ratio on molar (volume) basis for combustion of methane with theoretical quantity of air with be

A. 9.5 : 1

B. 12.5 : 1

C. 15.5 : 1

D. 18.5 : 1

Discuss this answer

Accepted Answer

C. Roasting

Drossing is a __________ operation.

Correct Answer :

Show all Chemical Engineering Basics MCQ

Related Questions

'Amortization' in respect of financial obligation of a company means the

A dummy activity is used in PERT network to describe the

Which of the following emissions in the exhaust gas of an I.C. engine causes the formation of photochemical smog?

Drossing is a __________ operation.

Dies for wire drawing are generally made of

The Al₂O₃ content of cryolite in Hall- Heroult cell is maintained between __________ percent.

Particle nature of cathode rays is proved due to the fact that they

The emf of a Deniell cell Zn | Zn²⁺ || Cu²⁺ | Cu can be increased by

The value of for air & most common gases can be safely assumed to be

Babbitt lining is used on brass/bronze bearings to increase the

Materials having resistivity ranging from 1 to 100 ohm. cm is termed as

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

__________ furnace is generally used in the non-ferrous foundries.

Liquor poisoning generally occurs due to the presence of __________ in it.

Minimum thermal efficiency of a steam boiler may be around __________ percent

Quartz is a __________ material.

Which of the following phenomenon/ phenomena is/are diffusion controlled?

Shaft/rotor speed is most accurately measured by a

Pearlite comprises of

Silicon percentage in the silicon steel used for electrical appliances/equipments is

__________ property of steel increases by addition of large amount of silicon in it.

Addition of silicon to cast iron

On being hit with a hammer, __________ will readily fracture.

Corona discharge is related to the operation of a/an

With increase in temperature, the electrical conductivity of semiconductors

Change in volume of metals from absolute zero temperature to their melting points is

Which of the following forces does not act on a fluid at rest?

Frother is added in the froth floatation cell used in ore beneficiation to stabilise the air bubbles (i.e., froth), which will hold the ore particles, but it does not affect the floatability of minerals. Which of the following is not used as a frother?

Glycerine is used as a coolant in cooling of some engines instead of water, because

Air/fuel ratio on molar (volume) basis for combustion of methane with theoretical quantity of air with be

Also checkout

Drossing is a __________ operation.

Correct Answer :

Show all Chemical Engineering Basics MCQ

Related Questions

'Amortization' in respect of financial obligation of a company means the

A dummy activity is used in PERT network to describe the

Which of the following emissions in the exhaust gas of an I.C. engine causes the formation of photochemical smog?

Drossing is a __________ operation.

Dies for wire drawing are generally made of

The Al2O3 content of cryolite in Hall- Heroult cell is maintained between __________ percent.

Particle nature of cathode rays is proved due to the fact that they

The emf of a Deniell cell Zn | Zn2+ || Cu2+ | Cu can be increased by

The value of for air & most common gases can be safely assumed to be

Babbitt lining is used on brass/bronze bearings to increase the

Materials having resistivity ranging from 1 to 100 ohm. cm is termed as

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

__________ furnace is generally used in the non-ferrous foundries.

Liquor poisoning generally occurs due to the presence of __________ in it.

Minimum thermal efficiency of a steam boiler may be around __________ percent

Quartz is a __________ material.

Which of the following phenomenon/ phenomena is/are diffusion controlled?

Shaft/rotor speed is most accurately measured by a

Pearlite comprises of

Silicon percentage in the silicon steel used for electrical appliances/equipments is

__________ property of steel increases by addition of large amount of silicon in it.

Addition of silicon to cast iron

On being hit with a hammer, __________ will readily fracture.

Corona discharge is related to the operation of a/an

With increase in temperature, the electrical conductivity of semiconductors

Change in volume of metals from absolute zero temperature to their melting points is

Which of the following forces does not act on a fluid at rest?

Frother is added in the froth floatation cell used in ore beneficiation to stabilise the air bubbles (i.e., froth), which will hold the ore particles, but it does not affect the floatability of minerals. Which of the following is not used as a frother?

Glycerine is used as a coolant in cooling of some engines instead of water, because

Air/fuel ratio on molar (volume) basis for combustion of methane with theoretical quantity of air with be

Also checkout

The Al₂O₃ content of cryolite in Hall- Heroult cell is maintained between __________ percent.

The emf of a Deniell cell Zn | Zn²⁺ || Cu²⁺ | Cu can be increased by