Refractory Materials Types, Properties and Applications

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Name of student *

The material which retains strength and form at high temperatures called as refractory material. *

1 point

True

Falce

Refractory material *

1 point

does not retain strength and form at high temperatures

retains strength and form at high temperatures

retains strength and not form at high temperatures

looses strength and form at high temperatures

Refractory is a heat-resistant material *

1 point

True

False

There are ___types of refractory material *

1 point

two

three

four

five

Following is example of Acidic refractories *

1 point

Al2O3

AlCl3

FeCl3

Sic

Which type of refractory material not attacked / affected by acidic materials *

1 point

Acidic

Basic

Neutral

Alkanline

Dolomite is ___refractory material. *

1 point

Acidic

Basic

Neutral

Which of the following is/ are use/s of refractory. *

1 point

Making fire bricks

Reactor walls

Moulds for casting glass and metals

Jet and rocket engine insulation

All of the above mentioned.

Silica crucible is an example of refractory material *

1 point

True

False

Along with chemical inertness, refractory material can also resist___ *

1 point

magnetic shock

thermal shock

electric shock

chemical shock

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