For a zero order chemical reaction, the

Half life period is directly proportion to the initial concentration of the reac-tants
Plot of products concentration with time is a straight line through the origin
Products concentration increases linerarly with time
All of the above
✅ The correct answer is option D.

Which of the following is not a dimension-less group used in catalysis ? (where, D = dispersion co-efficient, cm² /sec.D1 = diffusion co-efficient; cm²/sec L = length of the reactor, cm t = time, sec, v = volumetric flow rate, cm³/sec . V = volume, cm³.)

Reactor dispersion number (D/vL)
Reduced time (vt/V)
Thiele modulus (L√(k/D1)
None of these
✅ The correct answer is option D.