Which of the following is universally employed as the low expansion metal in the bimetallic thermometer, which is an iron-nickel alloy containing 36% nickel and has very low co-efficient of expansion (l/20th of ordinary metals)?

Materials and Construction
Which of the following is universally employed as the low expansion metal in the bimetallic thermometer, which is an iron-nickel alloy containing 36% nickel and has very low co-efficient of expansion (l/20th of ordinary metals)?

Invar

Alumel

Chromel

Constantan

Invar

Alumel

Chromel

Constantan

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Materials and Construction
Cast iron compared to steel is better in

Strength

Malleability

Ductility

Fluidity & castability

Strength

Malleability

Ductility

Fluidity & castability

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Materials and Construction
Nickel as a material of construction

Is paramagnetic below 415° C (its Curie temperature)

Has a body centred cubic (bcc) crystal lattice structure

Dimagnetic

Is used as an alloying element for both ferrous & non-ferrous alloys

Is paramagnetic below 415° C (its Curie temperature)

Has a body centred cubic (bcc) crystal lattice structure

Dimagnetic

Is used as an alloying element for both ferrous & non-ferrous alloys

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Materials and Construction
Bog iron used for the adsorption of H?S from coke oven gas is

Carbon free iron

Iron impregnated with resin (usually bakelite)

None of these

An intimate mixture of saw dust and iron dust (i.e. moist ferric hydroxide)

Carbon free iron

Iron impregnated with resin (usually bakelite)

None of these

An intimate mixture of saw dust and iron dust (i.e. moist ferric hydroxide)

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Materials and Construction
Tin in its pure form is used for making

Collapsible tubes for toilet preparations

Foil for wrapping cheese

All of these

Cans for food packing

Collapsible tubes for toilet preparations

Foil for wrapping cheese

All of these

Cans for food packing

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Materials and Construction
Which of the following is not a copper based alloy with nickel?

German silver

Monel metal

Constantan

Inconel

German silver

Monel metal

Constantan

Inconel

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Materials and Construction

Materials and Construction Which of the following is universally employed as the low expansion metal in the bimetallic thermometer, which is an iron-nickel alloy containing 36% nickel and has very low co-efficient of expansion (l/20th of ordinary metals)?

Materials and Construction Cast iron compared to steel is better in

Materials and Construction Nickel as a material of construction

Materials and Construction Bog iron used for the adsorption of H?S from coke oven gas is

Materials and Construction Tin in its pure form is used for making

Materials and Construction Which of the following is not a copper based alloy with nickel?

Materials and Construction
Which of the following is universally employed as the low expansion metal in the bimetallic thermometer, which is an iron-nickel alloy containing 36% nickel and has very low co-efficient of expansion (l/20th of ordinary metals)?

Materials and Construction
Cast iron compared to steel is better in

Materials and Construction
Nickel as a material of construction

Materials and Construction
Bog iron used for the adsorption of H?S from coke oven gas is

Materials and Construction
Tin in its pure form is used for making

Materials and Construction
Which of the following is not a copper based alloy with nickel?