Preview Questions Environmental Engineer | Role Specific Skill

Question 1: Which of the following is the best treatment method to remove phenols from wastewater in petrochemical plants?

Which action should you take?

Choose only one option

Adsorption onto activated carbon

Chemical oxidation

Coagulation-flocculation

Biological treatment

Question 2: In a wastewater treatment plant, which is the primary role of a chemical dosing system?

Which action should you take?

Choose only one option

To remove dissolved gases

To treat suspended solids

To regulate pH levels

To add coagulants and flocculants

Question 3: Which of the following is a major challenge associated with the use of activated sludge in wastewater treatment in the chemical industry?

Which action should you take?

Choose only one option

Inability to degrade nitrogen compounds

High energy requirements for aeration

Difficulty in maintaining microbial growth

Slow sludge settlement rate

Question 4: Under the Occupational Safety and Health Administration (OSHA) guidelines, which chemical substance is monitored for workplace exposure in a chemical manufacturing plant?

Which action should you take?

Choose only one option

Benzene and formaldehyde

Carbon dioxide and methane

Acids and bases

Heavy metals and radioactive substances

Question 5: When performing an EIA for a chemical plant, what is the purpose of considering "cumulative impacts"?

Which action should you take?

Choose only one option

To focus only on the direct effects of the proposed plant

To evaluate the combined effects of multiple projects or activities that may lead to significant long-term environmental changes

To assess only the emissions from the plant itself

To ignore the effects of minor individual projects

Question 6: In a chemical plant, which of the following methods is typically used to measure the concentration of carbon dioxide (CO?) in emissions from combustion sources?

Which action should you take?

Choose only one option

Gas chromatography

Gravimetric analysis

Non-dispersive infrared (NDIR) technology

Flame ionization detection