Engineering

Boost your preparation with the latest Engineering MCQs with answers and explanations. Our collection covers civil engineering, electrical engineering, mechanical engineering, electronics, software engineering, and other core subjects. These multiple-choice questions are designed for students, competitive exam aspirants, and professionals preparing for NTS, PPSC, FPSC, CSS, PMS, PEC exams, university entry tests, and job interviews. Practice online with updated Engineering MCQs to strengthen concepts, improve technical knowledge, and perform better in exams and recruitment tests.

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3862. At the following point for a given packing and set of fluids, the pressure drop per metre of packed height, with variation in fluid rates and operating pressure

by
increases
decreases
remains same
may increase or decrease depending upon the solubility of the gas in the liquid
✅ The correct answer is option C.

3868. Pick out the wrong statement about distillation operation

by
Distillation under vacuum is a substitute for steam distillation.
In differential (simple) distillation, the vapour is removed as soon as it is formed without appreciable condensation.
In flash (equilibrium) distillation, a definite fraction of liquid is vaporised in such a way that the evolved vapour & residual liquids are in equilibrium with each other.
Flash distillation, differential distillation & steam distillation are all continuous distillation processes.
✅ The correct answer is option D.

3869. An increase in the liquid resistance to interphase mass transfer and a resultant reduction in plate efficiency is caused by

by
an increase in liquid viscosity.
an increase in relatived volatility for rectification columns.
decrease in gas solubility for absorbers.
all (a), (b) and (c).
✅ The correct answer is option D.