Civil Services Pdf Notes
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CivilServices Pdf Notes

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*🛡️Space Debris*

♟️Space Debris (also called space junk or orbital debris) refers to all man-made objects in space that are no longer useful but still orbit the Earth.

*💎Main Sources*

*♟️1. Defunct satellites –* Old satellites that no longer work.

*♟️2. Rocket parts –* Stages or fragments left behind after launches.

*♟️3. Collision fragments –* Pieces created when satellites or rockets collide.

*♟️4. Mission-related objects –* Bolts, metal pieces, or tools left during missions.

*💎Dangers*

*♟️Damage to active satellites –* Debris can crash into working satellites.

*♟️Risk to astronauts –* Even tiny fragments can harm the International Space Station (ISS).

*♟️Kessler Syndrome –* A chain reaction where collisions create more debris, making space too dangerous.

*💎Solutions*

*♟️Graveyard orbit or re-entry –* Moving old satellites into a safer orbit or burning them up in Earth’s atmosphere.

*♟️Active Debris Removal (ADR) –* Using nets, robotic arms, or lasers to clear junk.

*♟️New space rules –* Agencies now design missions to reduce future debris.

*♟️In Short,* space debris = old satellites + rocket parts + fragments that make space operations risky.
*🛡️Hydrogels*

♟️Hydrogels are three-dimensional networks of water-soluble polymers that can absorb and retain a large amount of water without losing their structural integrity.
♟️They are super-soft and transparent materials that can shrink or swell when exposed to water.
♟️Hydrogels are made by crosslinking polymer chains through chemical reactions.

♟️Poly(2-hydroxyethyl methacrylate) (pHEMA):
This was the first hydrogel material used in contact lenses, offering flexibility and comfort.

♟️Silicone Hydrogel Lenses:
These are a variation of hydrogel lenses that improve oxygen permeability, allowing for extended wear and increased comfort.

♟️Modified Hydrogels:
These are hydrogels that have been modified to enhance their properties, such as increasing water content and oxygen permeability.
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Species In News-Marks UPSC.pdf
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"Result Mitra" ने फिर साबित किया – सही मार्गदर्शन और सही रणनीति से सफलता पक्की है 💯

🎯 अगर आप भी UPSC / UPPSC की तैयारी कर रहे हैं,
तो अब सही दिशा में कदम बढ़ाइए!

📚 हमारी खास सुविधाएं:
✔️ बेसिक से एडवांस तक पूरी तैयारी
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🔥 UPPCS 2024 में 15 सिलेक्शन (चयन) 🔥
अब मेहनत का RESULT दिखता है!

"Result Mitra" ने फिर साबित किया – सही मार्गदर्शन और सही रणनीति से सफलता पक्की है 💯

🎯 अगर आप भी UPSC / UPPSC की तैयारी कर रहे हैं,
तो अब सही दिशा में कदम बढ़ाइए!

📚 हमारी खास सुविधाएं:
✔️ बेसिक से एडवांस तक पूरी तैयारी
✔️ Answer Writing Practice
✔️ Current Affairs + Smart Strategy
✔️ Personal Guidance & Mentorship

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📞 अभी संपर्क करें: 7291914093
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7291914095

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🎥 YouTube Channel: Result Mitra
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Join 100% Free live Class - https://www.youtube.com/live/0Nm0zTVO8gk?si=4vxviWN1ONIFAO7p

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*10 Key Constitutional Amendments*

1. ⁠*1st Amendment Act, 1951*

• Restricted freedom of speech (Art. 19)
• Enabled land reforms, added 9th Schedule

2. *42nd Amendment Act, 1976 (Mini-Constitution)*

• Added “Socialist, Secular” to Preamble
• Curtailed judicial review, strengthened Centre
• During The Emergency

3. *44th Amendment Act, 1978*

• Reversed excesses of 42nd Amendment
• Restored Fundamental Rights protection
• Made Right to Property a legal (not fundamental) right

4. *52nd Amendment Act, 1985*

• Introduced Anti-Defection Law
• Added 10th Schedule

5. *61st Amendment Act, 1988*

• Reduced voting age from 21 → 18

6. *73rd & 74th Amendments, 1992*

• Gave constitutional status to Panchayats & Municipalities
• Strengthened local self-government
• Inspired by Mahatma Gandhi’s vision

7. *86th Amendment Act, 2002*

• Made Right to Education (6–14 years) a Fundamental Right (Art. 21A)

8. *99th Amendment Act, 2014*

• Created NJAC for judicial appointments
• Struck down by SC (violated Basic Structure)

9. *101st Amendment Act, 2016*

• Introduced GST (Goods & Services Tax)
• Created “One Nation, One Tax”

10. *103rd Amendment Act, 2019*

• Introduced 10% EWS reservation
• Based on economic criteria
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