Chemical Engineering Materials and Construction
Q 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 (1/20th of ordinary metals) ?
  • A A. Invar
  • B B. Constantan
  • C C. Chromel
  • D D. Alumel
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