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Materials and Construction

Materials and Construction
Very high sulphur in pig iron makes

All of these
Its brittle and malleable
Its hard and machinable
Its casting unsound

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Materials and Construction
An alloy used as thermocouple material comprises of 40% nickel and 60% copper.

German silver
Kanthal
Chromel
Constantan

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Materials and Construction
When iron is rusted, it is

Oxidised
Reduced
None of these
Converted to a fine powder

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Materials and Construction
Constantan used in thermocouples is an alloy of

Lead & tin
Copper & aluminium
None of these
Iron & copper

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Materials and Construction
Carbon percentage in medium carbon steel is around

0.8 to 1.4
0.35 to 0.5
1 to 1. 5
0.1 to 0.35

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Materials and Construction
Most suitable material for high pressure vessel operating at 500 atm. and 500° C is

Molybdenum stainless steel
High silicon iron (14% Si)
Mild steel
18/8 stainless steel

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