PPSCFPSCNTSPakistan govt jobs
- Subject
- Chemical Environmental Engineeringchemical-engineering › chemical-environmental-engineering-chemical-engineering
- Published
- 11 Mar 2019
- Last updated
- 28 May 2026
Explanation
The threshold limit value (TLV) for carbon monoxide (CO) in the air is set at 5 ppm, which represents the maximum concentration considered safe for occupational exposure. Higher values such as 50, 2000, or 5000 ppm exceed safe limits and can be hazardous.
More Chemical Environmental Engineering MCQs
Practice related questions from the same subject.
- 1.Which type of plant releases a significant quantity of sulfur dioxide (SO2) into the atmosphere?
- 2.What is the primary source of carbon monoxide pollution in the atmosphere, given that its safe threshold limit value (TLV) is below 50 ppm?
- 3.Which material is commonly utilized as an adsorbent to eliminate SO2 from air or gas streams?
- 4.What is the recommended method for disposing of solid radioactive nuclear waste?
- 5.At what minimum concentration percentage does nitrogen in polluted air function as a natural asphyxiant by lowering the oxygen partial pressure in the lungs, leading to suffocation and potential death due to oxygen deprivation?
- 6.The presence of manganese in water encourages the proliferation of which of the following?
- 7.What is the approximate pH level of treated (oxidized) sewage?
- 8.In which of the following industries is arsenic pollution not produced?
More in CHEMICAL ENGINEERING
- Chemical Engineering Basics
- Chemical Heat Transfer
- Chemical Process
- Chemical Reaction
- Fertilizer Technology
- Fluid Mechanics for Chemical
- Fuels and Combustion
- Furnace Technology
- Mass Transfer
- Materials and Construction
- Mechanical Operations
- Nuclear Power Engineering
- Petroleum Refinery Engineering
- Plant-Economics
- Polymer Technology
- Process Control and Instrumentation
- Process Equipment and Plant Design
- Refractory Technology
- Stoichiometry
- Thermodynamics for Chemical