Coke oven walls are lined with __________ bricks.

Coke oven regenerators are made of __________ bricks.

A

Fire clay

B

Silica

C

Low thermal conductivity

D

High electrical conductivity

Width of the coke oven towards coke side is slightly more than that on pusher side to

A

Facilitate easy discharging of coke as it swells during carbonisation

B

Facilitate uniform heating of the oven

C

Increase the output of the coke

D

None of these

Si percentage in silica refractories used in the walls of coke oven is about

A

45

B

60

C

80

D

95

A red house is built from red bricks . A blue house is built from blue bricks. A white house is built from white bricks. Then what is a greenhouse made from ?

A

green bricks

B

wood

C

glass

D

steel

The solid brick shown is made of small square shaped bricks of side 1. when the large brick is disassembled into its component small bricks. the total surface area of all the small bricks is how much greater than the surface area of the large brick?

A

32

B

40

C

60

D

72

Outer combustion chamber of blast furnace stove is lined with __________ bricks.

A

Fireclay

B

Silica

C

Chrome magnesite

D

Zirconia

Hot metal runner in blast furnace are lined with __________ bricks.

A

Silica

B

Carborundum

C

Fireclay

D

Magnesite

Slide gates in teeming laddie used for steel pouring in ingot moulds is lined with __________ bricks.

A

Bakelite impregnated or fused periclase

B

Silica

C

Semi-silica

D

Fireclay

Roof of a basic open hearth furnace is lined with __________ bricks.

A

Silica

B

Fireclay

C

Dolomite

D

Magnesite

Bauxite calcining rotary kilns are lined with __________ bricks.

A

Fireclay

B

Carbon

C

85% alumina

D

Corundum

Coke oven walls are lined with __________ bricks.

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