A. Goods produced
B. Gold reserve
C. Earning of the citizens
D. Taxes paid
✅ The correct answer is option A.
Basic Chemical Engineering MCQs
Dephosphorisation of molten pig iron is favoured by
A. Oxidising and basic slag
B. Reducing and basic slag
C. High activity co-efficient of phosphorous in metal
D. Oxidising and neutral slag
✅ The correct answer is option B.
Starting friction is low in case of the __________ lubrication.
A. Boundary
B. Hydrodynamic
C. Hydrostatic
D. Mixed/semi-fluid
✅ The correct answer is option C.
In 18-4-1 high speed steel, 18, 4 & 1 respectively denote the percentage of
A. Chromium, tungsten & vanadium
B. Tungsten, chromium & vanadium
C. Tungsten, vanadium & chromium
D. Tungsten, chromium & molybdenum
✅ The correct answer is option B.
Grinding wheel made of silicon carbide is most suitable for grinding materials of low tensile strength (e.g; tough bronze). Grinding is a __________ operation.
A. Turning
B. Dressing
C. Forming
D. Surface finishing
✅ The correct answer is option D.
Which of the following emissions in the exhaust gas of an I.C. engine causes the formation of photochemical smog?
A. Nitrogen oxides
B. Hydrocarbons
C. Both A & B
D. Carbon monoxide
✅ The correct answer is option C.
Which of the following is a weak acid?
A. HF
B. HCl
C. HI
D. HBr
✅ The correct answer is option A.
Otto cycle used in spark ignition petrol engines is also known as the constant __________ cycle.
A. Volume
B. Pressure
C. Heat
D. None of these
✅ The correct answer is option A.
The amount of different substances produced, when the same quantity of electricity is passed through different solutions are proportional to their
A. Equivalent weight
B. (equivalent weight)²
C. Molecular weight
D. (molecular weight)²
✅ The correct answer is option A.
Wrought iron does not have
A. Uniform strength in all directions
B. Ability to hold protective coating
C. High ductility & corrosion resistance
D. Easily weldable characteristics
✅ The correct answer is option A.