A. Admirability brass
B. Stainless steel
C. Aluminium brass
D. Titanium
✅ The correct answer is option B.
Basic Chemical Engineering MCQs
Catalyst used in the ‘catalytic converter’ employed in automobile exhaust line for complete combustion/oxidation of carbon monoxide, nitrogen oxides and hydrocarbons is
A. Alumina
B. Platinum
C. Vanadium pentoxide
D. Iron oxide
✅ The correct answer is option B.
A reduction process is accompanied with increase in the
A. Number of electrons
B. Oxidation number
C. Both A & B
D. Neither A nor B
✅ The correct answer is option A.
The weight of a body at the centre of the earth is
A. Infinite
B. Zero
C. Same as on the surface of the earth
D. None of these
✅ The correct answer is option B.
Water-tube boiler is the one, in which
A. Water passes through tubes and flue gases around it
B. Tube carrying hot flue gases are immersed in a pool of water
C. Tubes are placed in vertical position
D. None of these
✅ The correct answer is option A.
The factor of safety for brittle materials (having elongation < 5%) is based on the __________ stress.
A. Yield
B. Proof
C. Ultimate
D. None of these
✅ The correct answer is option C.
Milk is fat dispersed in water. It is an example of
A. Suspension
B. Emulsion
C. Gel
D. Solution
✅ The correct answer is option B.
Damage to metal surface by mechanical action is called
A. Pitting
B. Corrosion
C. Erosion
D. None of these
✅ The correct answer is option C.
In a casting, cold shut defect is caused by
A. Low pounhg temperature
B. Melt-mould reactions
C. Faulty gating system
D. Very low mould permeability
✅ The correct answer is option A.
The stress at which a metal fails by fatigue lies
A. Near the fracture point of the stress-strain curve
B. In the plastic range
C. In the elastic range
D. None of these
✅ The correct answer is option C.