Correct answer
C. None of these
Explanation
The correct answer is None of these.
Hazardous/polluting chemical industries should have an ‘exclusion zone’ with a green belt and general public access prohibited around it, covering a radius of ________ metres?
Mercaptans are added to liquefied petroleum gas (LPG) to ________?
In furnaces operating at very high temperature (say) 1250°C, e.g. soaking pit), the maximum heat transfer takes place by________?
Steel balls for ball bearings are generally made of ________ steel?
Grinding efficiency of a ball mill is of the order of ________ percent?
At equilibrium the concentration of water in vapour phase (C*) in kg/m3 of air space and the amount of water (m) adsorbed per kg of dry silica gel are related by, C* = 0.0667m. To maintain dry conditions in a room of air space 100m3 containing 2.2 kg of water vapour initially, 10 kg of dry silica gel is kept in the room. The fraction of initial water remaining in the air space after a long time (during which the temperature is maintained constant) is________?