Correct answer
B. None of these
Explanation
The correct answer is None of these.
‘Particulate’ air pollutants are finely divided solids and liquids. Which of the following is not a „particulate‟?
Multistage catalytic converter is not used in the________?
The wet bulb temperature is lower in dry air than in wet air at the same temperature. A dry bulb thermometer registers a higher temperature than a wet bulb thermometer except at ________ percent relative humidity?
Carbon black is pulverised in a________?
Which of the following increases during evaporative cooling process with recirculated water supply?
The pressure head of a flow meter remains constant for________?