The main use of HCl is in the________?

Out of 100 kcal/second of incident radiant energy on the surface of a thermally transparent body, 300 kcal/second is reflected back. If the transmissivity of the body is 0.25, the emissivity of the surface will be________?

Ans: 0.45Read →

MCQ #6355

The rate at which a chemical substance reacts is proportional to its ________?

Ans: Active massRead →

MCQ #99

Dean number is concerned with the________?

Ans: Fluid flow through helical pipesRead →