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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.

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

The density of the gases (present in air) decreases with increasing altitude to such an extent, that about 70% of the mass of atmospheric air is found in the lower 5 km. of the atmosphere. This lower region of atmosphere is called the_________________?

A Ionosphere

B Troposphere

C Stratosphere

D None of these

Review Detailed Answer

Correct Answer: Troposphere

TLV of NO2 & NO exposure for the human being is 5 & 25 ppm respectively. Prolonged exposure of human being to NO2 causes_________________?

A Skin disorder

B Bronchitis

C Bone disease

D Cancer

Review Detailed Answer

Correct Answer: Bronchitis

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Chemical Engineering Mcqs 9594 MCQs [All-Courses]

All Topics 9594

All Topics 9594

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___________________?

The density of the gases (present in air) decreases with increasing altitude to such an extent, that about 70% of the mass of atmospheric air is found in the lower 5 km. of the atmosphere. This lower region of atmosphere is called the_________________?

TLV of NO2 & NO exposure for the human being is 5 & 25 ppm respectively. Prolonged exposure of human being to NO2 causes_________________?