Foundry Materials - Solved MCQ

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Que 1

___ is used for melting cast iron in cupola.

A. Soft Coke

B. Coke Gas

C. Hard Coke

D. Coke is not used

Answer: C. Hard Coke

Hard Coke is used for melting cast iron in Cupola.

Que 2

Coal gas is used for melting ___

A. Alloys

B. Metals

C. Non-metals

D. All of the above

Answer: C. Non-metals

Coal Gas is used for melting Non-metals

Que 3

___ is expensive as compared to other fuels

A. Coke

B. Electricity

C. Gas

D. Oil

Answer: B. Electricity

Electricity is expensive as compared to other fuels.

Que 4

Fluxes have ___ melting point

A. Low

B. Medium

C. High

D. Mild

Answer: A. Low

Fluxes have low melting point

Que 5

Fluxes ___ molten metal and dross

A. Combine

B. Seperate

C. Heat

D. None of the above

Answer: B. Seperate

Fluxes Seperate metal and dross.

Que 6

Refractories are ___ resistant

A. Heat

B. Corrosion

C. Abrasion

D. All of the above

Answer: D. All of the above

Refractories are Heat, Corrosion and Abrasionresistant.

Que 7

Firebrick is an important raw material of refractory metal which is made from ___

A. Bricks

B. Concrete

C. Fireclay

D. None of the above

Answer: C. Fireclay

Firebrick is an important raw material of refractory metals, which is made from Fireclau

Que 8

Refractories are good conductors of heat.

A. True

B. False

Answer: B. False

Que 9

Refractories can withstand with with temperature

A. True

B. False

Answer: A. True

Que 10

Silica refractory is also known as ___ refractories

A. Acid

B. Basic

C. Neutral

D. Magnesia

Answer: A. Acid

Silica refractory is also known as Acid refractory.

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