Correct answer
B. All A., B. and C.
Explanation
The correct answer is All A., B. and C..
Though increased pressure has a retarding effect on cracking reaction, yet in actual process, a positive pressure of 10-15 kgf/cm2 is maintained during cracking mainly to________?
Isentropic process means a constant ________ process?
The thermal efficiency of a steel slab reheating furnace (walking beam type) may be about ________ percent?
Use of excess of combustion air in the combustion of fuels results in________?
During coking of coal, the ash content (percentage)________?
The most suitable equipment used to devulcanise rubber scrap and to make water dispersion & rubber solution is a ________?