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Chemical Engineering Mcqs 9594 MCQs [All-Courses]

Chemical Engineering MCQs designed for job test and interview preparation, particularly for fresh graduates, students, and candidates appearing in competitive exams. These multiple-choice questions cover important topics such as the fundamentals of chemical engineering, chemical processes, chemical reactions, process control, and instrumentation, along with other key concepts in the field.

5-200 μm size particles are called__________________?

A Colloids or aerosols

B Powder

C Dust

D Smoke

Review Detailed Answer

Correct Answer: Colloids or aerosols

Lagoons used for purification of polluted water_______________?

A Are large shallow artificial lakes also known as clarification lakes, maturation ponds or

B Use micro-organisms/bacteria in presence of dissolved oxygen

C Gives an excellent final effluent (with 3 to 4 lagoons arranged in series) having suspended

D All A., B. & C.

Review Detailed Answer

Correct Answer: All A., B. & C.

Major sources of noise in furnace operation arises from air inspirators, combustion, side wall vibrations and fluctuation in the process heat load. A 50% increase in fuel firing rate may increase the furnace noise level by about ____________ decibels?

A 3

B 30

C 7

D 70

Review Detailed Answer

Correct Answer: 3

TLV of lead for public sewer/waste water is about ______________ ppm?

A 1

B 25

C 150

D 650

Review Detailed Answer

Correct Answer: 1

Presence of nitrogen and phosphorous in waste water discharged into lakes and ponds causes_______________?

A Foaming

B Odour nuisances

C Undesirable plant growth

D Turbidity

Review Detailed Answer

Correct Answer: Undesirable plant growth

Which of the following is a secondary air pollutant ?

A Photochemical smog

B Sulphur dioxide

C Nitrogen dioxide

D Dust particles

Review Detailed Answer

Correct Answer: Photochemical smog

Ozone is__________________?

A A primary pollutant

B A secondary pollutant

C Impervious to ultra-violet rays

D Both B. and C.

Review Detailed Answer

Correct Answer: Both B. and C.

Infective bacteria in water is killed by the _____________ process?

A Sterilisation

B Aeration

C Disinfection

D None of these

Review Detailed Answer

Correct Answer: Sterilisation

Hydrogen ion concentration in distilled water is___________________?

A 10-7

B 7 × 10-7

C 107

D 7 × 107

Review Detailed Answer

Correct Answer: 10-7

The progressive warming up of the earth’s surface is mainly due to the___________________?

A Automobile exhaust

B Blanketing effect of CO2 in the atmosphere

C De-forestation

D Thickening of ozone layer

Review Detailed Answer

Correct Answer: Blanketing effect of CO2 in the atmosphere

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Chemical Engineering Mcqs 9594 MCQs [All-Courses]

All Topics 9594

All Topics 9594

5-200 μm size particles are called__________________?

Lagoons used for purification of polluted water_______________?

Major sources of noise in furnace operation arises from air inspirators, combustion, side wall vibrations and fluctuation in the process heat load. A 50% increase in fuel firing rate may increase the furnace noise level by about ____________ decibels?

TLV of lead for public sewer/waste water is about ______________ ppm?

Presence of nitrogen and phosphorous in waste water discharged into lakes and ponds causes_______________?

Which of the following is a secondary air pollutant ?

Ozone is__________________?

Infective bacteria in water is killed by the _____________ process?

Hydrogen ion concentration in distilled water is___________________?

The progressive warming up of the earth’s surface is mainly due to the___________________?