A. As tiny gas bubbles
B. In the atomic form
C. In the ionic form
D. In the molecular form
✅ The correct answer is option A.
Basic Chemical Engineering MCQs
Two wires of the same radius & material having length in the ratio of 1 : 2 are stretched by the same force. The strain produced in the two wires will be in the ratio of
A. 1:1
B. 1:2
C. 2:1
D. 1:4
✅ The correct answer is option A.
A jet engine turbine blade is normally manufactured by
A. Forging
B. Shell moulding
C. Investment casting
D. Pressure die casting
✅ The correct answer is option C.
With increase in pressure, the saturation temperature of steam
A. Increases rapidly first and then slowly
B. Increases slowly first and then rapidly
C. First increases and then decreases
D. None of these
✅ The correct answer is option A.
Air/fuel ratio by weight for combustion of methane with theoretical quantity of air will be about
A. 9:1
B. 17 : 1
C. 23 : 1
D. 29 : 1
✅ The correct answer is option B.
Which of the following has the highest density and the lowest melting point ?
A. Stainless steel
B. Titanium
C. Lead
D. Aluminium
✅ The correct answer is option C.
The predominant mode of heat transfer which takes place from boiler furnace to water walls of a boiler is
A. Conduction
B. Convection
C. Both A & B
D. Radiation
✅ The correct answer is option D.
The rolling process can not be used to produce
A. Plates
B. Rods
C. Tubes
D. Wires
✅ The correct answer is option C.
Powder metallurgy processing can be used for making
A. Dispersion strengthened copper rod
B. Self lubricating bearing and cemented carbide
C. Connecting rod
D. Piston
✅ The correct answer is option B.
Cold chiesel & hammers are made of
A. High speed steel
B. High carbon steel
C. Forged steel
D. Mild steel
✅ The correct answer is option B.