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can any one tell me that how shoul i prepere for entrance
exams of psu i mean from which book i have to gone through?
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Answer Posted / rahaman
due to thermal cracking large amounts of coke is formed which poisions the catalyst,so steam is added to reduce coke formation, what steam does is that it oxidise carbon to co or co2
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What are some common problems associated with bellow expansion joints?
Plz if anybody has placement paper of HAL mail me i m Chemical engg my id er.kotnala@gmail.com
If sum one has HAL placement paper plz mail me ,I m Chemical Engg.my id is er.kotnala@gmail.com
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hi all i have doe cheical engg, but i have to go for iob po interview so can anybody suggest me abt the kind of qns that can be asked.
X is strong but has a very low density (1% of traditional earth materials.) and hence light weight. It is a recyclable material. The compression behaviour of X is strain rate dependent. Higher strain rates result in higher initial modulus and higher compression strength. It can also withstand unlimited number of cycling loading provided the repetitive loads are kept below 80% of the compressive strength. The internal structure of the material includes air-traps which make it poor heat conductor. X is non- biodegradable and chemically inert in both soil and water. Most acids and their water solutions do not attack it; however strong oxidizing acids do. Solvents which attack X include esters, ketones, ethers, aromatic and aliphatic hydrocarbons and their emulsions, among others. It does not support bacterial/fungal growth as well .It also has significant acoustic properties and effectively reduces the transmission of airborne sound. X is combustible and should not be exposed to open flame or other ignition sources. Combustion products are carbon monoxide, carbon dioxide, water and soot. Long-term exposure to sunlight causes yellowing and a slight embrittlement of the surface due to ultraviolet light. X is able to withstand the rigours of temperature cycling, assuring long-term performance.
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