Asked: U.P.P.C.S. (Pre) 2010medium Level
ID: 6aeba3c83b345304a2744df0
QUESTION STATEMENT:द्विभाषी / Bilingual
प्रदूषण युक्त वायुमंडल को निम्न में से किसके द्वारा स्वच्छ किया जाता है?
A polluted atmosphere is naturally cleansed by which of the following?
SELECT CORRECT OPTION:
A
ऑक्सीजन
Oxygen
B
वर्षा
Rain
Correct
C
नाइट्रोजन
Nitrogen
D
हवा
Wind
Official Solution & Explanation:
Correct Answer: Option B(वर्षा)
वर्षा (Rain) वायुमंडल में उपस्थित धूल कणों, निलंबित कणिकीय पदार्थों (SPM) तथा घुलनशील गैसीय प्रदूषकों (जैसे SO2, NO2) को धोकर (Washout/Scavenging) जमीन पर ले आती है, जिससे वायुमंडल स्वच्छ हो जाता है।
Precipitation (rain) acts as a natural scrubber, washing out suspended particulate matter and dissolving soluble gaseous contaminants from the lower atmosphere.
Subject: Environment & Ecology•Topic: Pollution & Its Types•Subtopic: Air Pollution & Particulate Matter
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