A dense mass of water drops on smoke or dust particles in the lower atmosphere layers is referred to as:
Show answer & explanation
Correct answer: D
Explanation
The correct answer is option 4 i.e. smog.
A dense mass of water droplets suspended around smoke or dust particles in the lower atmosphere is called smog. This haze-like phenomenon results from air pollution (vehicle emissions, industrial fumes) mixing with fog, reducing visibility and causing health risks.
Other terms:
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Mist: Light water droplets without pollution.
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Blizzard: A severe snowstorm.
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Frost: Ice crystals formed on cold surfaces.
Unlike natural mist or frost, smog is an anthropogenic (human-caused) environmental issue, common in urban areas.