Which of the following processes is involved in the biochemical treatment of sewage effluents
Freshwater carrying pipelines in chemical industries are coloured with
Which of the following is the most lethal water pollutant
In water chemical treatment plant, use of chloramines ensures
Both liquid fire and gaseous fire can be extinguished by
Factor of safety or overdesign factor in heat transfer equipment is about ........... per cent more than the actual theoretical design factor.
Chemical foam extinguishers are applicable only for
Correct use of 'factor of safety' is very important in equipment design. It is defined as the ratio of the
Fault free analysis is an effective tool to identify
Radioactive substances present in the polluted water stream can be removed by
Match List I relating health hazards correctly with List II and select your answer using the codes given below :
Which is not a chemical coagulant
The expansion of term "HAZOP" is
The rate of drying during constant-rate period
Match List I correctly with List II and select your answer using the codes given below :
The most economical range of absorption factor is
If the selectivity of the solvent used in liquid-liquid extraction is unity
Flooding in a column results due to
The equipment frequently used for adiabatic humidification operation with recirculating liquid is
Humidification involves mass transfer between a pure liquid phase and a fixed gas which is
Absorption accompanied by heat evolution results in
HETP is numerically equal to HTU only when operating line
Constant rate period is that drying period during which
Minimum number of ideal stages are required in a fractionating column when the reflux ratio is equal to
Higher hold up of the solid in the rotary drier results in
Desorption of the absorbed solute by solvent is called
Absorption factor is defined as
in counter-current liquid-liquid extraction, the maximum concentration of solute in extract layer
At plait point of a ternary system
