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Materials and Construction

Materials and Construction
Cold worked steel parts are normally subjected to

Normalising
Hardening
Annealing
Shot peening

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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)?

Constantan
Alumel
Chromel
Invar

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Materials and Construction
The material of construction of pressure mills used for squeezing out the juice from sugar cane is

Monel
Stainless steel
Cast iron
Mild steel

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Materials and Construction
Hardest material so far found is

Graphite
Pumice stone
Diamond
Carborundum

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Materials and Construction
Wood metal is not used for making

Soft solder
Fusible safety plug for pressure cooker
Casting for dental work
Storage tank for storing brine and caustic soda

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Materials and Construction
Centrifugal pump made of pyrex or glass can't be used to pump

Dilute H₂SO₄ at room temperature
Brine
Milk and fruit juices
Alkaline solutions

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