5891. __________ 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.
Chemical Engineering
Prepare with the best Chemical Engineering MCQs with answers and detailed explanations for exams and job tests. Our collection covers key topics such as chemical process calculations, thermodynamics, fluid mechanics, heat transfer, mass transfer, reaction engineering, instrumentation, and plant design. These Chemical Engineering multiple-choice questions are ideal for students, competitive exam aspirants, and professionals preparing for NTS, PPSC, FPSC, PEC exams, GATE, university entry tests, and job interviews. Practice online with updated Chemical Engineering MCQs to strengthen your concepts and improve technical problem-solving skills.
5892. Green house effect is accentuated by
Deforestation
Rapid industrialisation
Increased transportation activity
All of the above
✅ The correct answer is option D.
5893. 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.
5894. The most commonly used chemical coagulant in water treatment is
Ferrous sulphate
Alum
Lime
Hydrazine
✅ The correct answer is option B.
5895. 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.
5896. 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.
5897. 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.
5898. Brown spots in fabrics will be caused by washing with water containing large amount of .
Iron
Zinc
Iodine
Bromine
✅ The correct answer is option A.
5899. Which of the following gases is having the widest explosion limit (about 2 to 81% gas in gas-air mixture), rendering it the property of the most explosive gas?
Hydrogen
Acetylene
Carbon monoxide
Ammonia
✅ The correct answer is option B.
5900. Which of the following is an adsorbant used for the removal of SO₂ from gas/air?
Bog iron
Limestone powder or alkalised alumina
Silica gel
Active carbon
✅ The correct answer is option B.