Chemical Engineering MCQs

6108 MCQs  (Page 65 of 611)

Normalising of a casting does not__________________?
A. Induce stresses in it
B. Refine its grain structure
C. Reduce segregation
D. Improve its mechanical properties
Titanium is produced by ___________________ of Ti Cl4 ?
A. Electrolytic reduction
B. Calcium reduction
C. Magnesium reduction
D. Thermal dissociation
Out of the following, the lowest packing of atoms exists in ____________________ crystal lattice structure?
A. Hexagonal close, packed (hcp)
B. Face centred cubic (fcc)
C. Body centred cubic (bcc)
D. Simple cubic
For the Stoke’s law to be valid in the case of a falling sphere in a fluid, the_____________________?
A. Reynolds number (based on sphere diameter) should be < 1
B. Flow around the sphere should be in turbulent region
C. Sphere must be metallic
D. Fluid density should be constant