Chemical Engineering and Environment MCQs

Welcome to our comprehensive collection of Multiple Choice Questions (MCQs) on Chemical Engineering and Environment, a fundamental topic in the field of Basic Chemical Engineering. Whether you're preparing for competitive exams, honing your problem-solving skills, or simply looking to enhance your abilities in this field, our Chemical Engineering and Environment MCQs are designed to help you grasp the core concepts and excel in solving problems.

In this section, you'll find a wide range of Chemical Engineering and Environment mcq questions that explore various aspects of Chemical Engineering and Environment problems. Each MCQ is crafted to challenge your understanding of Chemical Engineering and Environment principles, enabling you to refine your problem-solving techniques. Whether you're a student aiming to ace Basic Chemical Engineering tests, a job seeker preparing for interviews, or someone simply interested in sharpening their skills, our Chemical Engineering and Environment MCQs are your pathway to success in mastering this essential Basic Chemical Engineering topic.

Note: Each of the following question comes with multiple answer choices. Select the most appropriate option and test your understanding of Chemical Engineering and Environment. You can click on an option to test your knowledge before viewing the solution for a MCQ. Happy learning!

So, are you ready to put your Chemical Engineering and Environment knowledge to the test? Let's get started with our carefully curated MCQs!

Chemical Engineering and Environment MCQs | Page 2 of 31

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Q11.
Most of the atmospheric air pollutants are present in large quantity in

a.

stratosphere

b.

thermosphere

c.

trophosphere

d.

mesosphere

Discuss
Answer: (c).trophosphere
Q12.
Pick out the wrong statement.

a.

Caustic embrittlement of boiler's metallic parts is caused by high concentration of caustic soda in boiler feed water.

b.

Cooling and freezing of water kills the bacteria present in it.

c.

With increasing boiler operating pressure of steam, the maximum allowable concentration of silica in feed water goes on decreasing.

d.

Dissolved oxygen content in high pressure boiler feed water should be nil.

Discuss
Answer: (b).Cooling and freezing of water kills the bacteria present in it.
Q13.
'Pneumoconiosis' is a disease caused by the inhalation of __________ dust.

a.

coal

b.

uranium ore

c.

iron ore

d.

lime

Discuss
Answer: (a).coal
Q14.
The ratio of oxygen available to the oxygen required for stabilisation of sewage is called the

a.

bacterial stability factor.

b.

relative stability.

c.

biological oxygen demand (BOD).

d.

oxygen ion concentration.

Discuss
Answer: (b).relative stability.
Q15.
Pick out the wrong statement.

a.

The concentric atmosphere layer just above troposphere is called stratosphere, which is rich in ozone.

b.

Mesosphere is characterised by very low atmospheric pressure and low temperature.

c.

Troposhere is a dusty zone containing water vapor and clouds.

d.

The radio waves used in the long distance radio communication are reflected back to earth by stratosphere.

Discuss
Answer: (d).The radio waves used in the long distance radio communication are reflected back to earth by stratosphere.
Q16.
The main pollutant in waste water discharged from a petroleum refinery is oil (both in free and emulsified form). Free oil is removed by

a.

biological oxygen pond.

b.

aerated lagoons.

c.

trickling filters.

d.

gravity separator having oil skimming devices.

Discuss
Answer: (d).gravity separator having oil skimming devices.
Q17.
Phenolic water generated in coke ovens & by-product plant attached to an integrated steel plant containing phenol in concentration of less than 100 mg/litre can be removed by

a.

chlorination

b.

treating in biological oxygen pond

c.

chemical coagulation

d.

none of these

Discuss
Answer: (b).treating in biological oxygen pond
Q18.
Which of the following dust collection equipments is the least efficient (for sub-micronic particles) ?

a.

Dust catcher (gravity type)

b.

Cyclone separator

c.

Bag filter

d.

Hollow wet scrubber

Discuss
Answer: (a).Dust catcher (gravity type)
Q19.
Bag filter design is predominantly dependent on gas temperature, as it affects the gas density & viscosity and the selection of filtering material. The pressure drop in a bag filter is

a.

inversely proportional to viscosity of gas.

b.

proportional to the viscosity & density of the gas.

c.

proportional to the pressure of the gas.

d.

both (b) and (c).

Discuss
Answer: (d).both (b) and (c).
Q20.
Dust collection efficiency of a cyclone separator depends upon its

a.

diameter.

b.

inlet gas velocity.

c.

overall height.

d.

all (a), (b) & (c).

Discuss
Answer: (d).all (a), (b) & (c).
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