Viscous forces are unimportant
Viscous forces control
Viscous forces control and inertial forces are unimportant
Gravity forces control
✅ The correct answer is option C.
Chemical Engineering MCQs
Water filtration rate in a slow sand filter ranges from __________ litres/m²/hr.
10 to 20
100 to 200
1500 to 2500
4000 to 5000
✅ The correct answer is option B.
Reinglemann chart is used for the measurement of the
Combustibles present in automobile exhaust
Smoke density from a chimey
Exhaust gas density
Flue gas temperature
✅ The correct answer is option B.
__________ pump is the most suitable device for discharging a liquid against a pressure of ≥ 1500 kgf/cm².
Centrifugal
Piston
Plunger
Vane
✅ The correct answer is option C.
Green house effect is accentuated by
Deforestation
Rapid industrialisation
Increased transportation activity
All of the above
✅ The correct answer is option D.
Scale formation in boiler is controlled by
Preheating of feed water
Reduction in hardness, silica & alumina in feed water
Keeping the pH value of feed water just below 7
Eliminating H₂S in feed water
✅ The correct answer is option B.
The most commonly used chemical coagulant in water treatment is
Ferrous sulphate
Alum
Lime
Hydrazine
✅ The correct answer is option B.
Inhalation of lead compounds present in the automobile exhausts (using leaded petrol) causes
Blood poisoning
Anaemia
Nervous system disorder
All of the above
✅ The correct answer is option D.
Which of the following is not a natural source of air pollution?
Volcanic eruptions and lightening discharges
Biological decay of vegetable matter
Photochemical oxidation of organic matter
None of these
✅ The correct answer is option D.
Which of the following causes death by asphyxiation, if its presence in atmospheric air exceeds maximum allowable concentration (i.e. > 50 ppm)?
Benzopyrene
Peroxyacyl nitrate
Carbon monoxide
Sulphur dioxide
✅ The correct answer is option C.