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 7 of 31

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Q61.
Bacterial aerobic oxidation of polluted water in biological oxidation ponds is done to purify it. Presence of bacteria helps in

a.

coagulation and flocculation of colloids.

b.

oxidation of carbonaceous matter to CO₂.

c.

nitrification or oxidation of ammonia derived from breakdown of nitrogeneous organic matter to the nitrite and eventually to the nitrate.

d.

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

Discuss
Answer: (d).all (a), (b) and (c).
Q62.
Main pollutant present in automobile exhaust is

a.

CO

b.

CO₂

c.

NO

d.

hydrocarbons

Discuss
Answer: (a).CO
Q63.
Maximum allowable noise exposure limits for a man working for 8 hours a day in a noisy chemical plant is about __________ decibels.

a.

20

b.

60

c.

90

d.

120

Discuss
Answer: (c).90
Q64.
Industrial workers working in leather tanning & manufacturing units are prone to suffer from

a.

respirtory ailments (e.g. bronchitis).

b.

skin diseases (e.g. dermatities).

c.

silicosis.

d.

blurred vision.

Discuss
Answer: (b).skin diseases (e.g. dermatities).
Q65.
Thermal pollution of water increases its toxicity and oxidation of oxygen demanding waste besides favouring bacterial growth. A rise in water temperature by 10°C, doubles the toxic effects of __________ present in it.

a.

coal ash

b.

potassium cyanide

c.

ortho-xylene

d.

none of these

Discuss
Answer: (b).potassium cyanide
Q66.
__________ can not control the noise pollution.

a.

Use of silencers

b.

Green house gases

c.

Vibration damping

d.

Tree plantation

Discuss
Answer: (b).Green house gases
Q67.
Ozone level is generally found to be depleted in India in the month of

a.

February

b.

July

c.

April

d.

December

Discuss
Answer: (d).December
Q68.
Noise level during normal conversation among men is about __________ decibles.

a.

10

b.

45

c.

90

d.

115

Discuss
Answer: (b).45
Q69.
'Particulate' air pollutants are finely divided solids and liquids. Which of the following is not a 'particulate' ?

a.

Dust & mists

b.

Smoke & fumes

c.

Photochemical smog & soot

d.

None of these

Discuss
Answer: (d).None of these
Q70.
Pick out the wrong statement.

a.

Biological oxygen demand (B.O.D.) value of a sewerage sample is always lower than its chemical oxygen demand (C.O.D.) value.

b.

Environmental pollution by NOₓ emission is much higher by four stroke petrol engines as compared to the two stroke engines.

c.

Temperature in stratosphere rises with increasing altitude.

d.

The characteristic of a green house body is that it allows the long wavelength incoming solar radiation to come in but does not allow the short wavelength infra red radiation to escape out of the earth's atmosphere.

Discuss
Answer: (d).The characteristic of a green house body is that it allows the long wavelength incoming solar radiation to come in but does not allow the short wavelength infra red radiation to escape out of the earth's atmosphere.
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