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 26 of 31

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Q251.
Noise level audible to audience sitting in the 5th row from the stage during a large orchestra show corresponds to about __________ decibels.

a.

105

b.

135

c.

160

d.

185

Discuss
Answer: (b).135
Q252.
If carbon monoxide content in atmospheric air exceeds __________ ppm, death is bound to occur.

a.

50

b.

500

c.

1000

d.

3000 (i.e. 0.3%)

Discuss
Answer: (d).3000 (i.e. 0.3%)
Q253.
Presence of non-biodegradable substances, like alkyl benzene sulphonate (ABS) from the detergents in polluted water stream causes

a.

fire hazards.

b.

explosion hazards.

c.

persistent foam.

d.

depletion of dissolved oxygen.

Discuss
Answer: (c).persistent foam.
Q254.
Pick out the wrong statement.

a.

The concentric layer in atmosphere which contains about 70% of the total mass of atmosphere and characterised by a steady decrease in temperature is called stratosphere.

b.

Stratosphere is rich in ozone and is located just above the troposphere.

c.

Troposphere is a turbulent dusty zone containing much of water vapor and clouds.

d.

The earth's atmosphere is an envelope of gases extending upto a height of about 200 kms.

Discuss
Answer: (a).The concentric layer in atmosphere which contains about 70% of the total mass of atmosphere and characterised by a steady decrease in temperature is called stratosphere.
Q255.
A shallow pond in which the sewage is retained and biologically treated is called

a.

oxidation

b.

Imhoff tank

c.

lagoon

d.

skimming tank

Discuss
Answer: (a).oxidation
Q256.
Which is the most practical and economical method for removal of suspended solid matter from polluted water ?

a.

Sedimentation

b.

Skimming off

c.

Chlorination

d.

Biological oxidation

Discuss
Answer: (a).Sedimentation
Q257.
Atmospheric pollution caused by the exhaust gas of supresonic transport air-crafts is mostly in the atmospheric region called

a.

thermosphere

b.

stratosphere

c.

troposphere

d.

mesosphere

Discuss
Answer: (b).stratosphere
Q258.
Iron & manganese present in the polluted water is removed by

a.

simple filtration.

b.

oxidation followed by settling & filtration.

c.

chemical coagulation.

d.

chlorination only.

Discuss
Answer: (b).oxidation followed by settling & filtration.
Q259.
Water effluent generated in printing industry is decolourised by

a.

ion exchange technique.

b.

reverse osmosis.

c.

electrolytic decomposition.

d.

adsorption.

Discuss
Answer: (c).electrolytic decomposition.
Q260.
Oil and grease present in an emulsified state in waste water discharged from industries can be removed by

a.

biological oxidation.

b.

skimming off.

c.

settling out using chemical reagents.

d.

chlorination.

Discuss
Answer: (c).settling out using chemical reagents.
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