Question

The primary source of chlorofluorocarbons is

• A. Vehicular emissions
• B. Industrial effluents
• C. domestic sewage
• D. refrigeration equipments

Answer 1

The correct option is D

refrigeration equipments

The correct option is (D).

Explanation of the correct option:

CFCs:

1. CFCs (chlorofluorocarbons) are chemical compounds composed of chlorine, fluorine, as well as carbon.
2. Because of their damaging reactivity with ozone, compounds are dangerous when emitted into the environment.
3. Spraying can propellants (particulates), chemical solvents, refrigerants, air conditioning, and other sources of CFCs.
4. The majority of chlorofluorocarbons are released into the environment as a result of refrigerant leaks and the usage of aerosols.

Explanation of the incorrect options:

Option A: Although there are natural materials of NOx, including lightning storms and forest fires, the burning of fossil fuels is the primary source of vehicular emissions.

Option B: Industrial effluents come from a variety of sources, including battery manufacture, chemical production, electric power plants, etc.

Option C:

1. Domestic sewage is a form of wastewater generated by a group of people.
2. It is considered to be the main source of pathogenic bacteria and decomposing biodegradable waste.

The primary source of chlorofluorocarbons is refrigeration equipment.