When the density of the reaction mixture is constant in a chemical reaction, the ratio of the mean residence time to space time is________?

Pick out the wrong statement?

Hazards associated with the relief valve leakage for extremely hazardous material storage can be taken care of by providing________?

For series reaction, the relative yield________?

A belt conveyor used for the transportation of materials can________?

An alkaline solution is used to reduce the concentration of carbon dioxide in a stream from 10% to 0.1% by absorption with irreversible chemical reaction. The overall number of transfer units based on gas phase is?