MPSC PYQ

Global warming

Tested in 9 real MPSC questions across 2 years (20142023). See it in context on the interactive Concept Graph →

Years it was asked

What you need to know first

Basic greenhouse effectEl Nino phenomenonSolar radiationAtmospheric GasesSources of water and air pollution

Real questions that test this

मातीतील नायट्रोजन खत जिवाणूंद्वारे तोडल्यास ______ मुक्त होते. Nitrogen fertilizers in soils releases ______ when broken down by bacteria.

a)नायट्रोजन डायऑक्साइड (NO2) / Nitrogen dioxide (NO2)
b)नायट्रस ऑक्साइड (N2O) / Nitrous oxide (N2O)
c)नायट्रोजन ट्रायऑक्साइड (NO3) / Nitrogen trioxide (NO3)✓ Correct
d)नायट्रोजन (N2) / Nitrogen (N2)

When nitrogenous fertilizers in the soil are broken down by denitrifying bacteria, Nitrous oxide (N2O) is released, which is a potent greenhouse gas.

कोणत्या वायूमुळे मुख्यत्वे ओझोन थराचा हास होतो ? / The main gas responsible for ozone depletion is :

1)कार्बन डाय ऑक्साईड / Carbon dioxide
2)नायट्रोजन डाय ऑक्साईड / Nitrogen dioxide
3)मिथेन / Methane
4)क्लोरो फल्यूरो कार्बन / Chloro fluro carbon✓ Correct

Chlorofluorocarbons (CFCs) release chlorine atoms upon UV exposure, which actively break down ozone molecules in the stratosphere, causing depletion.

हवामानबदल ही नैसर्गिक आणि सतत प्रक्रिया आहे. या कल्पनाला कोणता भूवैज्ञानिक पुरावा समर्थन देतो ? / Which geological evidence supports the notion that climate change is a natural and continuous process ?

1)उच्च उंचीवरील झाडांमधे वलय / Tree rings in high altitudes
2)हिमनदीची प्रगती आणि माघार / Glacial advances and retreats✓ Correct
3)हिमनदी तलावांमध्ये गाळ साठतो / Sediment deposits in glacial lakes
4)वरील सर्व / All of the above

Geological evidence like ice cores, fossil records, tree rings (dendrochronology), and sedimentary layers prove that climate change has occurred naturally throughout Earth's history.