A topper · GS3 · 54 pages

Yarasi Tusharika: GS3 answer copy

20 answers by Yarasi Tusharika, as written in the test. Each question opens a page with how other toppers answered it.

The questions

  1. Q1What are Quantum dots? Discuss their unique properties and practical applications.10 marks
  2. Q2What are gravitational waves? State the significance of LIGO-India in the study of cataclysmic cosmic events.10 marks
  3. Q3Explain the significance of the Fast Breeder Reactor (FBR) in achieving the goals of India's Nuclear energy program.10 marks
  4. Q4Discuss several ways in which biotechnology can help in ensuring food security in India.10 marks
  5. Q5Public awareness is primary in inculcating environmental consciousness. How does the Environmental Impact Assessment (EIA) promote environmental awareness?10 marks
  6. Q6What are the ecological challenges associated with reintroducing cheetahs in India? Suggest measures to reduce the mortality of cheetahs in their new habitat.10 marks
  7. Q7How does the Forest (Conservation) Amendment Act, 2023 strike a balance between economic development, border security, and forest conservation?10 marks
  8. Q8Disinformation has become a serious threat to internal security.' In the light of the statement, mention the role of the State in prevention of fake news.10 marks
  9. Q9Analyse the challenges posed by narco-terrorism, with a focus on its implications for national security. Discuss the role of international cooperation, intelligence sharing and counter-narcotics strategies in mitigating the threats associated with the convergence of drug trafficking and terrorism.10 marks
  10. Q10Though drones have multiple applications in various sectors, they have opened a new dimension of internal security threat for the country. Discuss the statement. Also, explain how to balance the utilisation of drone technology for developmental purposes and safeguarding internal security interests.10 marks
  11. Q11The Indian Space sector exhibits huge growth potential. Analyze the opportunities for the private sector in the Indian space industry.15 marks
  12. Q12What do you understand by hydrogen fuel cells? Explain the bottlenecks in large scale commissioning of hydrogen fuel cells in current energy infrastructure.15 marks
  13. Q13Overexploitation strains the quality as well as the quantity of our groundwater resources. Analyze.15 marks
  14. Q14Plastic waste has become near ubiquitous, threatening ecological stability. Explain. Also, discuss various measures taken by the government to contain further environmental degradation by plastic wastes.15 marks
  15. Q15Forest fires amplify climate change and loss of biodiversity. Explain the vulnerability of Indian forests to fire. Discuss the ways for effective prevention and control of forest fires in India.15 marks
  16. Q16Elaborate the disaster vulnerability of Indian coastal cities with examples. Examine the relevance of Sendai Framework in disaster management of coastal regions.15 marks
  17. Q17Evaluate the multifaceted challenges posed by Left-Wing Extremism (LWE) in India. Analyzing the socio-economic and political factors contributing to the persistence of Naxalism, examine the effectiveness of the government's strategies in addressing its root causes.15 marks
  18. Q18Examine the challenges posed by money laundering to the Indian economy and national security. Also suggest ways to curb this menace, with a focus on technological interventions.15 marks
  19. Q19Alarming rising trend in cyber attacks endangers national security. Explain with examples. Elaborate the need for establishing a dedicated cyber security force to deal with the issue.15 marks
  20. Q20Socio-economic functions across the Indian border makes its management more complex. Discuss with suitable examples.15 marks

The answers

Question 1 · 10 marks · 131 words written

What are Quantum dots? Discuss their unique properties and practical applications.

Opening · a definition

Quantum dots are semiconducting particles of nanosize which are used in various applications like LCDs, detection devices etc.

Body · points

Unique properties of Quantum dots

  1. Unique optical properties :- They emit different colours when irradiated using different wavelengths.
  2. Semiconducting properties - As they are nanosized (1 to 100 nanometers) these materials exhibit unique semiconducting properties.
  3. They also show some magnetic properties.

Practical applications

  1. Can be used in Light emitting

diodes (LEDs) , LCD screens as they have unique optical properties.

  1. Can be used in sensors , detection devices .

  2. They can be used in communication satellites because of their semiconducting properties.

  3. Can be used in Electric vehicles , other related applications .

Close · a summary

Thus Quantum dots can revolutionize the LED, LCD space by their unique opto-electronic properties.