11) Which is the only non-metal found in liquid state at room temperature

12) Burette is used to measure

13) Which is a process in which cations or anions are captured from solutions, with the help of artificial polymeric resins, to produce de-ionised water.

14) Water-break Test is used to determine the _____ of the surface of the work piece.

15) One gram equivalent = _____ Ampere hours