APPSC Group-I Prelims 2019 Paper II · Question 81

Question 81 of the APPSC Group-I Prelims 2019 Paper II (26 May 2019). Try it first, then open the answer and explanation.

1. Prelims 2019 · P-II · Q81 · Science & Technology · General Science

   Which materials are used for Superheater tubes ?

   సూపర్ హీటర్ ట్యూబ్స్ లో ఏ వస్తువును వాడతారు?

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   Answer: Chromium Molybdenum

   సమాధానం: క్రోమియమ్ మైలిదెనమ్

   Boiler superheater tubes carry steam at very high temperature and pressure. They are made of chromium-molybdenum (Cr-Mo) alloy steels, which keep their strength at high temperature (creep resistance) and resist oxidation.

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