Industrial waste management week 3 & 4

What is the primary mechanism through which outdoor air enters indoor spaces?

• Respiration

• Infiltration

• Evaporation

• Condensation

Which of the following practices can help reduce indoor radon levels that are caused by indoor leakages?

• Using scented candles

• Using dehumidifiers

• Adding more houseplants

• Increasing ventilation

The________ rating of a filter indicates its efficiency in trapping different sizes of airborne particles (Mention its full form).

• Minimum efficiency reporting value

• Minimum Efficiency Reporting Value

Which type of air filter is commonly used in commercial establishments to improve indoor air quality?

• Quartz filter

• Fiberglass filter

• HEPA filter

• Paper filter

Which of the following is a common physical process that affects the movement of outdoor particles into indoor environments?

• Photolysis

• Diffusion

• Combustion

• Corrosion

Which of the following best describes the purpose of a HEPA filter?

• To increase humidity

• To remove large particles from the air

• To eliminate odors

• To capture small particles, including allergens and some pollutants

Which type of ventilation system uses fans to exhaust indoor air to the outside and bring in fresh air from the outside?

• Natural ventilation

• Mechanical ventilation

• Passive ventilation

• Mixed-mode ventilation

What is one chemical process that can transform outdoor pollutants before they enter indoor spaces?

• Adsorption

• Photochemical reactions

• Sublimation

• Precipitation

______ is a measure of how many times the air within a defined space is replaced with outdoor air in one hour.

• Air changes per hour (ACH)

• Airflow

• Ventilation

• Infiltration

If an office space of 200 cubic meters requires an ACH of 5 for adequate ventilation, what is the required ventilation rate in cubic meters per hour (m³/h)?

• 200

• 500

• 800

• 1000