Ozone depletion
Ozone depletion is a Current Affairs concept from the MPSC syllabus, tested in 7 past MPSC questions across 5 exam years between 2014 and 2023. Below are those real questions with their correct answers and explanations, plus the concepts worth being comfortable with first.
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'अॅन्थ्रोपोसिन' या संज्ञेचा नेहमी वापर करणारे आणि 1995 साली ज्यांना रसायनशास्त्राचे नोबेल पारितोषिक मिळाले ते पॉल जे. क्रूट्झन हे __________ चे नागरिक होते. Paul J. Crutzen, who often used the term 'Anthropocene' and who won the Nobel Prize for Chemistry in year 1995, was a citizen of :
Paul J. Crutzen was a Dutch meteorologist and atmospheric chemist who won the Nobel Prize in Chemistry in 1995 for his work on ozone depletion and popularized the term 'Anthropocene'.
खालीलपैकी कोणता हरितगृह वायू संपूर्ण मानव निर्मित आहे ? Which of the following greenhouse gases is entirely produced by human activities ?
CFCs (Chlorofluorocarbons) and synthetic greenhouse gases like HFCs are entirely anthropogenic and have no natural sources.
ओझोन संदर्भात खालील कोणती विधाने बरोबर आहेत ? In relation to Ozone which statements are true ?
(a)अ. ओझोनला पृथ्वीचे रक्षण कवच म्हणतात. / A. Ozone is called protection shield of the Earth.
(b)ब. 1985 मध्ये ओझोन थराला छिद्र पडल्याचे स्पष्ट झाले. / B. In 1985 it was clear that Ozone layer has holes.
(c)क. 16 सप्टेंबर हा जागतिक ओझोन दिवस म्हणून साजरा केला जातो. / C. 16th September is celebrated as World Ozone Day.
(d)ड. 1989 मध्ये ओझोन क्षयास कारणीभूत रसायन वापरावर बंदी घालण्यात आली. / D. In 1989 chemicals responsible for Ozone depletion are banned to utilize.
All the given statements are correct: Ozone is the earth's protective shield, the ozone hole was discovered in 1985, World Ozone Day is September 16, and the Montreal Protocol (1989) restricted ozone-depleting substances.
कोणत्या वायूमुळे मुख्यत्वे ओझोन थराचा हास होतो ? / The main gas responsible for ozone depletion is :
Chlorofluorocarbons (CFCs) release chlorine atoms upon UV exposure, which actively break down ozone molecules in the stratosphere, causing depletion.
ओझोन मध्ये घट झाल्याने जीवसृष्टीवर खालीलपैकी कोणते परिणाम होतात ? Which of the following are ecological impacts of ozone depletion ?
(a)माणसाच्या रोग प्रतिकारक क्षमतेचे नुकसान / Damage human immune system
(b)वनस्पतींची वाढ खुंटणे / Stunted growth of the plants
(c)तापमानात वृद्धी / Rise of temperature
(d)मोतीबिंदू होण्याचे कारण / Causes cataracts
Ozone depletion leads to increased UV rays reaching Earth, which causes damage to human immune systems, stunted plant growth, global temperature disruption, and cataracts. Therefore, all statements are correct.