A. Silica
B. Fireclay
C. Silicon carbide
D. Corundum
Related Mcqs:
- Coke oven walls are lined with _____________ bricks?
A. Silica
B. Tar-dolomite
C. Low thermal conductivity
D. Fire clay - Coke oven regenerators are made of ______________ bricks?
A. Fire clay
B. Silica
C. Low thermal conductivity
D. High electrical conductivity - Bog iron used for the adsorption of H2S from coke oven gas is___________________?
A. An intimate mixture of saw dust and iron dust (i.e. moist ferric hydroxide)
B. Iron impregnated with resin (usually Bakelite)
C. Carbon free iron
D. None of these - Wrought iron is having very high ________________?
A. Hardness
B. Strength
C. Corrosion resistance
D. Susceptibility to changes in its properties by heat treatment - White cast iron as compared to grey cast iron is ________________?
A. More durable
B. Very brittle
C. Very hard
D. All A., B. & C. - Work hardening of a material ________________?
A. Decreases its tensile strength
B. Decreases its ductility
C. Increases its ductility
D. Does not affect its ductility - Spark plugs are made of______________________?
A. High alumina ceramic
B. Metallic carbides
C. Corundum
D. Carborundum - Mixing vessel used for the chlorination of methane to produce methyl chloride is made of___________________?
A. Copper
B. Cast iron
C. Aluminium
D. High carbon steel - Glass is corroded by________________?
A. Fluorine (dry or wet)
B. Sulphuric acid
C. Phosphoric acid
D. None of these - Very high sulphur in pig iron makes ___________________?
A. Its casting unsound
B. Its hard and machinable
C. Its brittle and malleable
D. All A., B. & C.
