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Engineering Materials and Processes MCQ

What is the primary purpose of using insulating materials?

To reduce the amount of current flowing through the conductor.

To keep the current in its proper path along the conductor.

To increase the amount of current flowing through the conductor.

To create a magnetic field around the conductor.

Answer

Correct Answer: To keep the current in its proper path along the conductor.

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What is INGOT IRON?

A radioactive metallic element

A metal with a high boiling point

An alloy of carbon and iron

Commercially pure open hearth iron.

Answer

Correct Answer: Commercially pure open hearth iron.

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INGOT is a large block of metal that is used for _____.

Further rolling and processing

Making coins

Melting down

Storing

Answer

Correct Answer: Further rolling and processing

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What is an inert gas?

A gas that may be used as a shield in welding or heat treatment to prevent oxidation or scaling.

A gas that is used in welding or heat treatment to promote oxidation or scaling.

A gas that is used in welding or heat treatment to protect against welding.

A gas that is used in welding or heat treatment to create a weld.

Answer

Correct Answer: A gas that may be used as a shield in welding or heat treatment to prevent oxidation or scaling.

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What is a gas that may be used as a shield in welding or heat treatment to prevent oxidation or scaling called?

Inert Gas

Reactive gas

Noble gas

Active gas

Answer

Correct Answer: Inert Gas

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What is the main element in INCONEL?

Nickel

Chromium

Carbon

Iron

Answer

Correct Answer: Nickel

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What is INCONEL used for?

Nickel alloy highly resistant to heat and corrosion

Diamonds

Gold

Copper

Answer

Correct Answer: Nickel alloy highly resistant to heat and corrosion

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What does the term "IMPURITIES" mean?

Elements or compounds that are impure.

Elements or compounds whose presence in a material is undesired.

Elements or compounds whose presence in a material is desired.

Elements or compounds that are pure.

Answer

Correct Answer: Elements or compounds whose presence in a material is undesired.

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What is the composition of a HYPO EUTECTIC ALLOY?

To the left of the EUTECTIC on an equilibrium diagram

Above the EUTECTIC on an equilibrium diagram

At the EUTECTIC on an equilibrium diagram

To the right of the EUTECTIC on an equilibrium diagram

Answer

Correct Answer: To the left of the EUTECTIC on an equilibrium diagram

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What is the binary alloy whose composition lies to the right of the EUTECTIC on an equilibrium diagram?

HYPER EUTECTIC ALLOY

BINARY ALLOY

EUTECTIC ALLOY

EQUILIBRIUM DIAGRAM

Answer

Correct Answer: HYPER EUTECTIC ALLOY

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What is HOYT METAL used for?

Coins

Bearings

Cutlery

Dental Fillings

Answer

Correct Answer: Bearings

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What is hot rolled steel?

Steel that is rolled to a shape

Steel that is hot to the touch

Steel that is rolled at a hot temperature

Steel rolled to shape while being heated to the plastic condition.

Answer

Correct Answer: Steel rolled to shape while being heated to the plastic condition.

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What is Hindu Minium?

A high strength aluminium alloy

A mild steel

A copper alloy

An alloy of magnesium and iron

Answer

Correct Answer: A high strength aluminium alloy

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What is the minimum carbon content required for steel to be classified as high carbon steel?

0.7%

0.4%

0.6%

0.5%

Answer

Correct Answer: 0.6%

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What is the "HALF VALUE LAYER"?

The thickness of an absorber that will reduce the intensity of radiation to one half.

The thickness of an absorber that will reduce the intensity of radiation to three fourths.

The thickness of an absorber that will reduce the intensity of radiation to two thirds.

The thickness of an absorber that will reduce the intensity of radiation to one third.

Answer

Correct Answer: The thickness of an absorber that will reduce the intensity of radiation to one half.

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What is the term for the thickness of an absorber that will reduce the intensity of radiation to one half?

Radiation Exposure

Half Value Layer

Lead Shielding

Stopping power

Answer

Correct Answer: Half Value Layer

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What is the characteristic time required for half of the nuclei of a radioactive species to disintegrate spontaneously?

Half life

Twice the half-life

Full life

Ten times the half-life

Answer

Correct Answer: Half life

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What does HALF LIFE refer to?

The time taken for the radioactivity of a substance to fall to half its original value.

The time taken for a radioactive substance to decay to half its original mass.

The characteristic time required for half of the nuclei of a radioactive species to disintegrate spontaneously.

The time it takes for half of a given sample of a radioactive material to decay.

Answer

Correct Answer: The characteristic time required for half of the nuclei of a radioactive species to disintegrate spontaneously.

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What is the structure formed from ordinary lamellar pearlite by long annealing called?

SPHEROIDIZED PEARLITE

LAMELLAR PEARLITE

GRANULAR PEARLITE

FERRITIC MATRIX

Answer

Correct Answer: GRANULAR PEARLITE

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What is granite made of?

Limestone, clay and iron

Sand, clay and water

Feldspar, mica and quartz

Quartz, feldspar and mica

Answer

Correct Answer: Quartz, feldspar and mica

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What is GRANITE?

A type of cheese

A color

A city in Minnesota

A rock composed of quartz, feldspar and mica

Answer

Correct Answer: A rock composed of quartz, feldspar and mica

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What is the meaning of GRAIN?

A cereal plant

A unit of weight

The edge of a tool

Individual crystal in metals.

Answer

Correct Answer: Individual crystal in metals.

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What is a GLUE LAMINATED BEAM?

A kind of support made of glass and metal

A building material created by compressing sawdust

A structural wood beam made by gluing thinner boards together until a desired dimension for beam thickness is reached.

A strong light used for projectors

Answer

Correct Answer: A structural wood beam made by gluing thinner boards together until a desired dimension for beam thickness is reached.

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What is GLASS?

An opaque substance produced by the fusion of sand and certain metallic salts

A black substance produced by the fusion of sand and certain metallic salts

A transparent substance produced by the fusion of sand and certain metallic salts

A transparent substance produced by the fusion of sand and certain organic compounds

Answer

Correct Answer: A transparent substance produced by the fusion of sand and certain metallic salts

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What is Glacier Metal?

A type of rock found in glaciers.

A type of metal found in glaciers.

A metal used for making jewelry.

A tin base alloy used for lining bearings.

Answer

Correct Answer: A tin base alloy used for lining bearings.

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What is gilding metal?

A unit of measure for gold

A type of wood

Alloy containing 80-90% copper, the reminder being zinc.

A metal found in the Earth's crust

Answer

Correct Answer: Alloy containing 80-90% copper, the reminder being zinc.

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What is the main metal found in gilding metal?

Bronze

Silver

Copper

Gold

Answer

Correct Answer: Copper

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What is GEL COAT?

A thin coat of plastic resin covering fibreglass panels.

A type of paint

A fabric

A sealant

Answer

Correct Answer: A thin coat of plastic resin covering fibreglass panels.

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What is the desired part of an ore called?

The part of the ore that is smelted

The part of the ore with the valuable minerals

The part of the ore that is separated from the gangue

The part of the ore that is left after smelting

Answer

Correct Answer: The part of the ore with the valuable minerals

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What is the definition of "gangue"?

A group of criminals or outlaws

A large group of people with a common identity and interests

An ongoing feud or conflict

The worthless portion of an ore that is separated from the desired part before smelting is commenced.

Answer

Correct Answer: The worthless portion of an ore that is separated from the desired part before smelting is commenced.

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What is the range of temperature in which GAMMA IRON is stable?

910-1230°C

900-1200°C

950-1250°C

1000-1300°C

Answer

Correct Answer: 910-1230°C

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Which of the following is true about GAMMA IRON?

It is a transition metal.

It is unstable at 910-1230°C.

It is the face centered cubic form of pure iron.

It is the body centered cubic form of pure iron.

Answer

Correct Answer: It is the face centered cubic form of pure iron.

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What is the percentage of molybdenum in the alloy ferromolybdenum?

68-74%

58-64%

48-54%

720-780%

Answer

Correct Answer: 58-64%

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What is Ferromanganese?

A compound

An alloy of iron and manganese containing from 78-82% manganese.

An element

A metal

Answer

Correct Answer: An alloy of iron and manganese containing from 78-82% manganese.

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What is the range of manganese concentration in Ferromanganese?

90-95%

75-80%

78-82%

82-85%

Answer

Correct Answer: 78-82%

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What is a material that exhibits the phenomena of hysteresis and saturation called?

Ferrous material

Paramagnetic material

Ferromagnetic material

Diamagnetic material

Answer

Correct Answer: Ferromagnetic material

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Which of the following is not present in ferrochromium?

Carbon

Potassium

Iron

Chromium

Answer

Correct Answer: Potassium

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What is the chromium content in the alloy known as Ferrochromium?

45-60%

50-65%

55-70%

60-72%

Answer

Correct Answer: 60-72%

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What is the maximum percentage of iron that can be present in Ferroaluminium?

30%

20%

50%

40%

Answer

Correct Answer: 20%

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What is the ratio of iron to aluminium in Ferroaluminium?

30% iron, 70% aluminium

12% iron, 88% aluminium

20% iron, 80% aluminium

40% iron, 60% aluminium

Answer

Correct Answer: 20% iron, 80% aluminium

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What is the use of ferroalloys?

To add durability to alloys

To increase the amount of certain elements in ferrous metals and alloys

To decrease the amount of carbon in ferrous metals and alloys

To add stiffness to alloys

Answer

Correct Answer: To increase the amount of certain elements in ferrous metals and alloys

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What is the other name for Ferrrite?

Gamma iron

Delta iron

Zeta iron

Alpha iron

Answer

Correct Answer: Alpha iron

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Which of the following is true about ferrite?

It is very soft and ductile

A solid solution of one or more elements in body centered cubic iron

A magnetic form of iron

Iron which contains little or no carbon

Answer

Correct Answer: A magnetic form of iron

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What is the common name of Ferric Oxide?

Red Iron Oxide

Yellow Iron Oxide

Green Iron Oxide

Blue Iron Oxide

Answer

Correct Answer: Red Iron Oxide

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What does FERRIC OXIDE do?

Acts as a reducing agent

Makes glass red

Increases hot compressive strength

Used in making cosmetics

Answer

Correct Answer: Increases hot compressive strength

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What is Falkirk sand?

Moulding sand with a coarse, closed texture.

Moulding sand with a fine, open texture.

Moulding sand with a fine, closed texture.

Moulding sand with a coarse, open texture.

Answer

Correct Answer: Moulding sand with a coarse, open texture.

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What are the binding qualities of Falkirk sand?

Non-Existent

Poor

Moderate

Very Good

Answer

Correct Answer: Moderate

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What is the meaning of "FACING SAND"?

A mixture of water, clay and sand used to make cement

Sand that forms the face of the mould which comes in contact with the molten metal.

The sand found on the facing side of a plinth

A type of sand used to make glass

Answer

Correct Answer: Sand that forms the face of the mould which comes in contact with the molten metal.

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What does an emulsifier do?

A material that is added to some penetrant after the penetrant is applied to make a water washable mixture.

A material that decreases the stability of dispersion of one liquid in another.

A material that makes a water washable mixture.

A material that increases the stability of dispersion of one liquid in another.

Answer

Correct Answer: A material that increases the stability of dispersion of one liquid in another.

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What is EMERY?

A type of corundum

A natural abrasive

A mineral found in Myanmar

An abrasive material

Answer

Correct Answer: An abrasive material

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What is an element?

A natural satellite of a planet

A gaseous chemical element

An astronomical object consisting of a luminous spheroid of gas

A substance which cannot be chemically broken down to simpler substances.

Answer

Correct Answer: A substance which cannot be chemically broken down to simpler substances.

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Which of the following is NOT a form in which ELEKTRON is supplied?

Extruded sections

Solids

Sheets

Tubes

Answer

Correct Answer: Solids

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What is the name of the alloy?

Magnesium

Iron

Steel

ELEKTRON

Answer

Correct Answer: ELEKTRON

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What is a magnet of variable strength produced by passing current through conductors around a soft iron core called?

Solenoid

Magnetron

Electromagnet

Transformer

Answer

Correct Answer: Electromagnet

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What is an electromagnet?

A machine that uses electricity and magnetism to move or control objects

A magnet of variable strength produced by passing current through conductors around a soft iron core.

A device that uses an electric current to create a magnetic field

Answer

Correct Answer: A magnet of variable strength produced by passing current through conductors around a soft iron core.

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What is an electrolyte?

A non-metallic conductor, usually a fluid, in which electric current is carried by the movement of ions.

A metallic element that has been vaporized in an electric arc

A charged particle

An atom or group of atoms with an electric charge

Answer

Correct Answer: A non-metallic conductor, usually a fluid, in which electric current is carried by the movement of ions.

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What is "Electrical Sheets" the trade name for?

Carbon steel sheets used in the manufacture of punching for laminated magnetic circuits

Silicon steel sheets used in the manufacture of punching for laminated magnetic circuits

Steel sheets used in the manufacture of punching for laminated magnetic circuits

Iron and steel sheets used in the manufacture of punching for laminated magnetic circuits

Answer

Correct Answer: Iron and steel sheets used in the manufacture of punching for laminated magnetic circuits

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What is the use of electrical insulating materials?

To allow the flow of current

To block the flow of current

To conduct electricity

To keep the current in its proper path along the conductor.

Answer

Correct Answer: To keep the current in its proper path along the conductor.

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What does ELECTRICAL INSULATING MATERIALS do?

Provide a path for current to flow

Help to regulate the flow of current

Offer a very large resistance to flow of current

Keep the current from flowing

Answer

Correct Answer: Offer a very large resistance to flow of current

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What is electric steel used for?

Steel structures

Electric vehicles

Melting in electric furnaces

Home appliances

Answer

Correct Answer: Melting in electric furnaces

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What is the definition of an elastomer?

A non-crystalline solid that deforms irreversibly under stress and returns to its original shape when the stress is removed.

Any of various elastic substances resembling rubber.

A polymer with cross-links that allow it to recover its original shape after being stretched or compressed.

A synthetic rubber that is made by vulcanizing rubber with sulfur and is used in a wide variety of applications.

Answer

Correct Answer: Any of various elastic substances resembling rubber.

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What is the purpose of using a dry sand mixture?

For making the moulds that are to be used immediately

For making the moulds that are to be dried before using.

For sculpting

For baking cakes

Answer

Correct Answer: For making the moulds that are to be dried before using.

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Which of the following is not a requirement for the sand used in a dry sand mixture?

Permeability

Strength

Porosity

Drying time

Answer

Correct Answer: Strength

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What does DROSS mean?

The scum that forms on the surface of molten metal's

The process of smelting

A type of metal

A unit of measurement

Answer

Correct Answer: The scum that forms on the surface of molten metal's

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What is the allotropic form of carbon?

Graphite

Diamond

Coal

Carbon

Answer

Correct Answer: Diamond

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What is DEVIZES SAND used for?

Fine sand work in the foundry

Suitable for use with all types of casting

Coarse greenish yellow moulding sand

Dry sand work in the foundry for medium and heavy castings

Answer

Correct Answer: Coarse greenish yellow moulding sand

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What does the term "Developer" mean in photography?

A processing solution that reduces the exposed grains of an emulsion to metallic silver, thus making the image visible.

A device used to take photographs

A software used to develop applications

A tool used to develop websites

Answer

Correct Answer: A processing solution that reduces the exposed grains of an emulsion to metallic silver, thus making the image visible.

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What is the primary use of a deoxidizer?

To increase the carbon content of molten metals

To increase the silicon content of molten metals

To increase the oxygen content of molten metals

To remove oxygen from molten metals

Answer

Correct Answer: To remove oxygen from molten metals

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From where does dendrite crystal grow?

Outward from the surface of a mould

In a non-branching tree like pattern

From the centre of a mould

From the surface of a mould

Answer

Correct Answer: From the surface of a mould

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DELTA IRON is an allotropic form of iron which is stable above what temperature?

1540°C

1260°C

1800°C

1390°C

Answer

Correct Answer: 1390°C

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What is the meaning of "Degasifier"?

A material employed for removing gases from metals and alloys.

A device for measuring the density of a liquid

A machine for cutting metal

A tool for measuring the weight of a object.

Answer

Correct Answer: A material employed for removing gases from metals and alloys.

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What are the simplest carbohydrates?

Sugars

Amino acids

Proteins

Fats

Answer

Correct Answer: Sugars

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What is the definition of Carbide?

An element found in the sun's atmosphere

A compound of carbon with one or more metallic elements.

A mineral used as an abrasive

A gaseous by-product of fermentation

Answer

Correct Answer: A compound of carbon with one or more metallic elements.

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What is the process called when steel is covered with a cap fitting into the neck of the mould?

Capped Steel

Bottle Top Steel

Rimmed Steel

Semiskilled Steel

Answer

Correct Answer: Capped Steel

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What is the primary use of CALCIUM SILICON?

Calcium carbonate

Deoxidizer and degasifier for steel and cast iron

Alloys

Steel and cast iron

Answer

Correct Answer: Deoxidizer and degasifier for steel and cast iron

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CALCIUM SILICON is an alloy of which three elements?

Calcium, silicon and iron

Just silicon and iron

Just calcium and iron

Just calcium and silicon

Answer

Correct Answer: Calcium, silicon and iron

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What is the crushed product CALCIUM MOLYBDATE used for?

Used to produce glass

Used to add molybdenum to iron and steel produced in open hearth, air furnace or electric furnace

Used as an insecticide

Used in the production of concrete

Answer

Correct Answer: Used to add molybdenum to iron and steel produced in open hearth, air furnace or electric furnace

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What is CALCIUM MOLYBDATE used for?

It is used for crushed products containing molybdenum.

It is used to add molybdenum to iron and steel produced in electric arc furnace.

To add molybdenum to iron and steel produced in open hearth, air furnace or electric furnace.

It is used to add molybdenum to iron and steel produced in air furnace.

Answer

Correct Answer: To add molybdenum to iron and steel produced in open hearth, air furnace or electric furnace.

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CALCIUM MANGANESE SILICON is an alloy containing _____.

17 to 19% calcium, 8 to 10% manganese, 55 to 60% silicon and 10 to 14% iron

5 to 7% calcium, 3 to 5% manganese, 45 to 50% silicon and 7 to 10% iron

30 to 33% calcium, 15 to 17% manganese, 75 to 80% silicon and 18 to 20% iron

23 to 25% calcium, 12 to 14% manganese, 65 to 70% silicon and 14 to 16% iron

Answer

Correct Answer: 17 to 19% calcium, 8 to 10% manganese, 55 to 60% silicon and 10 to 14% iron

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What is the primary use of CALCIUM MANGANESE SILICON?

Scavenger for oxides, gases and non-metallic impurities in steel.

Used in the production of tools.

Alloy containing 17 to 19% calcium, 8 to 10% manganese, 55 to 60% silicon and 10 to 14% iron.

Used as a primary alloy in steel.

Answer

Correct Answer: Scavenger for oxides, gases and non-metallic impurities in steel.

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What is calcium carbide made from?

Hydrochloric acid and calcium hydroxide

Fusing lime and coke

Sodium chloride and calcium oxide

Nitric acid and calcium oxide

Answer

Correct Answer: Fusing lime and coke

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What is the colour of Calcium Carbide?

Brown

Green

Greyish black

Yellow

Answer

Correct Answer: Greyish black

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What is the main use of calcium boride?

De-oxidation and degasification of non-ferrous metals and alloys.

Alloys

Decoration

Refining

Answer

Correct Answer: De-oxidation and degasification of non-ferrous metals and alloys.

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What is the main purpose of CALCIUM ALUMINIUM SILICON?

To create new alloys.

To degasify and deoxidize steel.

To harden already existing alloys.

To alloy different metals together.

Answer

Correct Answer: To degasify and deoxidize steel.

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What is the use of Cadmium?

A chemical element

White ductile metallic element used to plate steel and as an alloying element.

Used for construction

It is used in making pens

Answer

Correct Answer: White ductile metallic element used to plate steel and as an alloying element.

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What is BARK?

The decarburized layer just beneath the scale that results from heating steel in an oxidizing atmosphere.

The protective outer layer of a tree trunk

The sound a dog makes

A type of boat

Answer

Correct Answer: The decarburized layer just beneath the scale that results from heating steel in an oxidizing atmosphere.

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What does BAR stand for?

A material with a width to thickness ratio much smaller than sheet or plate

A proportionally long material

A piece of material thicker than sheet

A piece of material thinner than sheet

Answer

Correct Answer: A piece of material thicker than sheet

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What is the name of the inventor of BAKELITE?

Dr. L.H. Backeland

Dr. William Morton

Mr. John Galsworthy

Dr. Charles Drew

Answer

Correct Answer: Dr. L.H. Backeland

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What is the temperature range for bainite to form?

200° C to 300° C

400° C to 600° C

700° C to 900° C

481° C to the M's temperature

Answer

Correct Answer: 481° C to the M's temperature

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What is bainite?

A mineral found in bainite

A structure in steel that forms between 481° C and the M's temperature.

The founder of Bainite

A type of rock

Answer

Correct Answer: A structure in steel that forms between 481° C and the M's temperature.

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What does "BACKING SAND" mean?

Sand used to make glass

Foundry sand placed next to the facing sand after the latter is in place.

Sand used to make the mold for casting

Sand used to make concrete

Answer

Correct Answer: Foundry sand placed next to the facing sand after the latter is in place.

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What is the purpose of backing sand in a foundry?

To place next to the facing sand

To hold the liquid metal in place

To support the weight of the mould

It forms the bulk of sand used to complete the mould.

Answer

Correct Answer: It forms the bulk of sand used to complete the mould.

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What is the minimum percentage of tin in Babbitt metal?

60%

59.5%

55%

65%

Answer

Correct Answer: 59.5%

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What are the constituents of BABBITT METAL?

Tin, Copper, Antimony, Lead, Iron, Bismuth

Tin, Copper, Antimony, Lead, Iron, Bismuth, zinc

Tin, Copper, Antimony, Lead, Iron

Tin, Copper, Antimony, Lead, Iron, Bismuth, cadmium

Answer

Correct Answer: Tin, Copper, Antimony, Lead, Iron, Bismuth

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Which of the following is not an element of an Alnico?

Aluminium

Cobalt

Titanium

Nickel

Answer

Correct Answer: Titanium

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What is the main element in Alnico materials?

Nickel

Aluminium

Iron

Cobalt

Answer

Correct Answer: Aluminium

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What is the meaning of the term "ALLOY STEEL"?

Steel containing significant quantities of carbon and commonly accepted amounts of manganese, silicon, sulphur and phosphorus.

Steel containing significant quantities of carbon and alloying elements added to effect changes in mechanical and physical properties.

Steel containing significant quantities of alloying elements added to effect changes in mechanical and physical properties.

Steel containing only carbon and commonly accepted amounts of manganese, silicon, sulphur and phosphorus.

Answer

Correct Answer: Steel containing significant quantities of alloying elements added to effect changes in mechanical and physical properties.

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What are the alloying elements present in Alloy Steel?

Carbon, Oxygen, Nitrogen, Hydrogen

Manganese, Silicon, Sulphur and Phosphorus

Answer

Correct Answer: Manganese, Silicon, Sulphur and Phosphorus

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What is the meaning of "alloying elements"?

Elements added to the base metal to change its properties

Elements that are commonly found in alloys

Alloys that are made up of two or more metals

Elements that make alloys stronger

Answer

Correct Answer: Elements added to the base metal to change its properties

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What is another word for a substance composed of two or more chemical elements?

Element

Compound

Molecule

Alloy

Answer

Correct Answer: Alloy

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Over what range of temperatures do allotropic metals exist?

More than two lattice forms over a range of temperature

Metals which do not exist in a lattice form

Two lattice forms over a range of temperature

One lattice form over a range of temperature

Answer

Correct Answer: One lattice form over a range of temperature

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Which of the following is not an allotropic metal?

Iron

Copper

Gold

Silver

Answer

Correct Answer: Copper

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What is the meaning of the word "Aggregate"?

Clumped together

Small particles that are used for powder metallurgy, that are loosely combined to form a whole

Wet

Large particles

Answer

Correct Answer: Small particles that are used for powder metallurgy, that are loosely combined to form a whole

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What are additives?

Chemicals added to food to improve its taste

Chemicals added to soil to make it more fertile

Chemicals added to water to make it safe to drink

Chemicals added to oil or fuel to increase its effectiveness and obtain desirable qualities

Answer

Correct Answer: Chemicals added to oil or fuel to increase its effectiveness and obtain desirable qualities

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What is the purpose of additives?

To improve the quality of oil or fuel

To increase the effectiveness of oil or fuel

To reduce the quality of oil or fuel

To reduce the effectiveness of oil or fuel

Answer

Correct Answer: To increase the effectiveness of oil or fuel

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What does the chemical term "ACID" define?

A material which gives an acid reaction.

A material which gives an neutral reaction.

A material which gives an base reaction.

A material which gives an alkali reaction.

Answer

Correct Answer: A material which gives an acid reaction.

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What does ACID stand for?

A chemical term to define a material which gives an acid reaction.

Acid-forming, Cloudy, Indecisive, Diet

Always Crucial In Design

Assets, Claims, Insurance, Debts

Answer

Correct Answer: A chemical term to define a material which gives an acid reaction.

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What is an abrasive?

A tool for cutting metal

A natural or artificial material such as sand stone, emery, aluminium oxide or silicon carbide.

A kind of soap

A device for smoothing wood

Answer

Correct Answer: A natural or artificial material such as sand stone, emery, aluminium oxide or silicon carbide.

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More Applied Engineering Subjects

Advanced Electrical/Mechanical Systems

Applied Mechanics

Calculus

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Design & Analysis of Control Systems

Electrical Systems

Engineering Computation

Engineering Economic Analysis

Foundations of Engineering

General Chemistry

Hydraulics and Pneumatics

Manufacturing Processes

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Principles of Microeconomics

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