Which of the following ratios defines the recycle ratio in a chemical process?

If 4 gm of a radioisotope has a half life period of 10 days, the half life of 2 gm of the same isotope will be ________ days?

Nickel percentage in invar which is an iron-nickel alloy, and is used as a thermocouple material is ________?

If CO2 is not fully absorbed by the KOH solution meant for its absorption in the orsat apparatus, it will appear as________?

In a shell and tube heat exchanger, the shell side fluid velocity can‟t be changed by changing the________?

________ temperature remains constant during adiabatic saturation process of unsaturated air?