Chemical Engineering Mcqs

Post weld heat treatment is done by____________________?

(A) Normalising
(B) Stress relieving
(C) Tempering
(D) Solution annealing

Submitted By :Ali Uppal

High speed steel tools retain their hardness upto a temperature of _____________ °C?

(A) 500
(B) 750
(C) 900
(D) 1100

Submitted By :Ali Uppal

When iron is rusted, it is__________________?

(A) Converted to a fine powder
(B) Reduced
(C) Oxidised
(D) None of these

Submitted By :Ali Uppal

Caustic soda is transported in _____________ lined containers ?

(A) Glass
(B) Nickel
(C) Neoprene
(D) Either

Submitted By :Ali Uppal

_______________ is a donor impurity for semi-conductors ?

(A) Boron
(B) Antimony
(C) Gallium
(D) None of these

Submitted By :Ali Uppal

Non-ferrous metals and hard steels do not exhibit a definite yield point, when pulled in the testing machine and hence for these cases, a better measure of their elastic properties is defined by the ______________ stress?

(A) Ultimate
(B) Yield point
(C) Proof
(D) None of these

Submitted By :Ali Uppal

How many molecules per unit cell are there in a face centred cubic lattice ?

(A) 2
(B) 4
(C) 6
(D) 8

Submitted By :Ali Uppal

Which one occupies the lowermost position in the electromotive series of metals ?

(A) Aluminium
(B) Noble metals (Ag, Pt, Au)
(C) Zinc
(D) Alkali metals (K, Na, Li)

Submitted By :Ali Uppal

Lead pipes are not safe for carrying drinking water, because water, containing dissolved oxygen attacks lead thereby forming poisonous Pb(OH)2. Lead pipes are readily corroded by___________________?

(A) Dilute HCl
(B) Acetic acid
(C) Concentrated H2SO4
(D) None of these

Submitted By :Ali Uppal

Nickel as a material of construction__________________?

(A) Is used as an alloying element for both ferrous & non-ferrous alloys
(B) Is paramagnetic below 415° C (its Curie temperature)
(C) Diamagnetic
(D) Has a body centred cubic (bcc) crystal lattice structure

Submitted By :Ali Uppal

Previous
First
....
647
648
649
650
651
....
811
Next