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Materials and Construction

Materials and Construction
Which of the following has no effect on the carbide forming tendency in steels?

Vanadium
Molybdenum
Chromium
Phosphorus

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Materials and Construction
The softest material in Mho's scale (for measuring hardness) is

None of these
Rubber
Gypsum
Talc

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Materials and Construction
18/8 steel is a/an __________ stainless steel.

None of these
Austenitic
Martensitic
Ferritic

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Materials and Construction
Presence of manganese in alloy steel improves its

Corrosion resistance
Abrasion resistance & toughness
Elasticity & creep resistance
Cutting ability

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Materials and Construction
Water gas generator is made of

Carbon steel-brick lined
Stainless steel-lead lined
Cast iron
High carbon steel-procelain lined

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Materials and Construction
As the impurities are oxidised, the melting point of iron

Decreases
May increase or decrease ; unpredictable
Remains unchanged
Increases

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