• Institute of Advanced Study in Science and Technology (IASST), Guwahati, has developed an electrochemical sensing platform for detecting carcinogenic or mutagenic compound N-nitrosodimethylamine (NDMA) and N-nitrosodiethanolamine (NDEA) sometimes found in food items like cured meat, bacon, some cheese, and low-fat milk. It was achieved by developing a modified electrode by immobilizing carbon nanomaterials (carbon dots) in DNA.


  • The scientists pointed out that with changing food habits of urban Indians, they are exposed to harmful chemicals belonging to Nitrosamine family in cured meats, bacon, some cheese, low-fat dry milk, and fish. Such chemicals include carcinogenic ones like NDMA and NDEA, which may also alter the chemical composition of our DNA. Hence it is important to develop detection techniques to detect them.


  • Most of the techniques used for detection of Nitrosamine have detection limits in μM. In this study published in the journal ACS Appl. Bio Mater, the scientists, have fabricated an electrochemical biosensor using DNA immobilized on the surface of carbon dots for sensitive and selective detection of N-nitrosamine. The detection limit was determined to be 9.9×10−9 M and 9.6×10−9 M for NDMA and NDEA, respectively.


  • The electrochemical biosensor platform was developed using the ability of NDMA and NDEA, to alter the DNA. Carbon dots (CDs), a carbon-based nanomaterial, was used, which is already established as a biocompatible and environmentally friendly material. Naturally derived chitosan, (natural biopolymer obtained from the shells of shrimp, lobster, and crabs) is an environment-friendly sustainable material that was used to synthesize CDs.


  • As this is an electrochemical sensor, electrode was developed by depositing carbon dots (carbon nanoparticles) and then immobilizing bacterial DNA on them. This electrode system was used to measure the current peak. Both NDMA and NDEA alters the chemical structure of DNA present in the electrode, making it more conducting, which ultimately results in the increased current peak.


  • The scientists took advantage of the fact that out of the base pairs A, T, G, C, Guanine (G) is electrochemically active. In the presence of NDMA, guanine is modified to 6-Omethylguanine or 7-methyl guanine and with NDEA guanine changes to 8-oxoguanine to form DNA adducts. The DNA adducts formed are electrochemically active, which ultimately leads to an increase in peak current in electrochemical set-up, helping in the detection of the chemicals.




  • Minister of Petroleum and Natural Gas &Steel Shri Dharmendra Pradhan on Thursday reviewed pipeline projects worth approx. Rs. 8000 Crore, under various stages of implementation by oil and gas companies. Pitching for Aatmanirbhar Bharat, Minister Pradhan called for complete indigenisation in these projects.


  • GAIL is processing line pipe tenders of more than ₹1000 crore for around 1 Lakh MT steel procurement by September 2020 for progressive supply of 800 Km line pipe from domestic bidders. This quantity is expected to be doubled by the end of current financial year to boost Make in India initiatives and further the goal of a self-reliant India.


  • Project work along the Pradhan Mantri Urja Ganga, JHBDPL pipeline, has resumed in full swing post lockdown and is gearing up to connect Eastern India with the West to Central natural gas pipeline corridor for boosting gas-based economy in the country.




  • The UMANG mobile app (Unified Mobile Application for New-age Governance) is a Government of India all-in-one single, unified, secure, multi-channel, multi-platform, multi-lingual, multi-service mobile app, powered by a robust back-end platform providing access to high impact services of various organizations (Central and State).


  • Prime Minister of India launched the UMANG App in 2017 to bring major government services on a single mobile app, with a larger goal to make the government accessible on the mobile phone of our citizens. About 660 services from 127 departments & 25 states and about 180 utility bill payment services are live and more are in pipeline. UMANG user base has crossed 2.1 Crore including Android, iOS, Web and KaiOS. Citizens can also access their Digilocker from UMANG and give their feedback after availing any service through Rapid Assessment System (RAS) which has been integrated with UMANG.


  • MeitY has taken various initiatives in recent past to ease of lives of citizens by facilitating online delivery of Government services. To further enhance the initiatives of Digital India Programme, MeitY has brought the India Meteorological Department (IMD) services on the “UMANG App”.




  • Researchers at Indian Institute of Technology (IIT) Guwahati has worked on out-of-the-box ideas that can help prevent or reduce short-term memory losses associated with Alzheimer’s disease.


  • The research team was headed by Prof. Vibin Ramakrishnan, Professor, Department of Biosciences & Bioengineering, IIT Guwahati, and Prof. HarshalNemade, Professor, Department of Electronics and Electrical Engineering, IIT Guwahati. They studied the neurochemical principles of Alzheimer’s, and explored new ways to prevent accumulation of neurotoxic molecules in the brain that are associated with short-term memory loss.


  • The IIT Guwahati team reports interesting methods such as application of low-voltage electric field, and the use of ‘trojan peptides’ to arrest aggregation of neurotoxic molecules in the brain. The scientists are assisted by research scholars Dr. Gaurav Pandey and Mr. JahnuSaikia in their work. The results of their studies have been published in reputed journals such as ACS Chemical Neuroscience, RSC Advances of Royal Society of Chemistry, BBA and Neuropeptides.


  • The development of a cure for Alzheimer’s disease assumes importance India as it has the third highest number of Alzheimer’s patients in the world, after China and US, with more than four million people falling prey to the memory loss associated with it. While current treatments only alleviate some of the symptoms of the disease, there is no disruptive therapeutic approach yet that can treat the underlying causes of Alzheimer’s.


  • “Approximately hundredpotential drugs for treatment of Alzheimer’s disease have failed between 1998 and 2011, which shows the gravity of the problem,” says Dr. Ramakrishnan, who participates in worldwide efforts at finding cures for the disease.


  • A defining hallmark of Alzheimer’s is the accumulation of amyloid beta peptides in the brain. Dr. Ramakrishnan and Dr. Nemade seek methods to reduce the accumulation of these peptides, in order to arrest the progression of Alzheimer’s.


  • In 2019, the IIT Guwahati scientists found that application of a low-voltage, safe electrical field can reduce the formation and accumulation of toxic neurodegenerative molecules that cause short-term memory loss in Alzheimer’s disease. They found that external electric/magnetic field modulates the structure of these peptide molecules, thereby preventing aggregation.


  • “Upon exposure to electric field, we could retard the degeneration of nerve cells to an extent of 17–35%. Objectively, this would translate to about 10 years delay in the onset of the disease”, says Dr. Ramakrishnan.


  • Working further in this area, the scientists explored the possibility of using ‘Trojan peptides’ to arrest aggregation of these neurotoxic molecules. The idea of using ‘Trojan peptide’ comes from mythological “Trojan Horse” used as subterfuge by the Greeks in the battle of Troy. The researchers have designed Trojan peptides by adopting a similar approach of ‘deceit’ to impede the aggregation of the amyloid peptide, arrest the formation of toxic fibrillar assemblies, and reduce poisoning of nerve cells that leads to memory loss.




  • The Union Cabinet, chaired by the Prime Minister Shri Narendra Modi, has given its approval to the following for the welfare of and to enable old age income security for Senior Citizens:


  • (a) Extension of Pradhan MantriVayaVandanaYojana (PMVVY) up to 31st March, 2023 for further period of three years beyond 31st March, 2020. (b) To allow initially an assured rate of return of 7.40 % per annum for the year 2020-21 per annum and thereafter to be reset every year.


  • (c) Annual reset of assured rate of interest with effect from April 1st of financial year in line with revised rate of returns of Senior Citizens Saving Scheme (SCSS) upto a ceiling of 7.75% with fresh appraisal of the scheme on breach of this threshold at any point.


  • (d) Approval for expenditure to be incurred on account of the difference between the market rate of return generated by LIC (net of expenses) and the guaranteed rate of return under the scheme.


  • (e) Capping Management expenses at 0.5% p.a. of funds of the scheme for first year of scheme in respect of new policies issued and thereafter 0.3% p.a. for second year onwards for the next 9 years. (f) Delegating the authority to Finance Minister to approve annual reset rate of return at the beginning of every financial year.


  • (g) All other terms and conditions of the scheme remaining the same.


  • The minimum investment has also been revised to Rs.1,56,658 for pension of Rs.12,000/- per annum and Rs.1,62,162/- for getting a minimum pension amount of Rs.1000/- per month under the scheme.


  • Financial implications: Government's financial liability is limited to the extent of the difference between the market return generated by LIC and the guaranteed return of 7.40% per annum initially for the year 2020-21 and thereafter to be reset every year in line with SCSS. The expenses on managing the scheme, are capped at 0.5% of assets under management per annum for the first year of the scheme and 0.3% p.a. for second year onwards for the next nine years. As such the expected financial liability v/ill range from an estimated expenditure of Rs. 829crore in the financial year 2023-24 to Rs. 264crore in last FY 2032-33.


  • The average expected financial liability for the subsidy reimbursement, calculated for annuity payment on actual basis is expected to be Rs. 614 crore per year for currency of the scheme. The actual interest-gap (subsidy) would however depend upon the actual experience in terms of number of new policies issued, the quantum of investment made by subscribers, actual returns generated and the basis of annuity payment.




  • Portfolio Guarantee for purchase by PSBs of Bonds or Commercial Papers (CPs) with a rating of AA and below Posted On: 20 MAY 2020 2:32PM by PIB Delhi


  • The Union Cabinet, chaired by the Prime Minister Shri Narendra Modi, has approved the Sovereign portfolio guarantee of up to 20% of first loss for purchase of Bonds or Commercial Papers (CPs) with a rating of AA and below (including unrated paper with original/ initial maturity of up to one year) issued by NBFCs/ MFCs/Micro Finance Institutions (MFIs) by Public Sector Banks (PSBs) through an extension of the Partial Credit Guarantee Scheme (PCGS).


  • The Cabinet also approved modifications in the existing PCGS on purchase of pooled assets, increasing its coverage by— Making NBFCs/HFCs reported under SMA-1 category on technical reasons alone during the last one year period prior to 1.8.2018 eligible. Earlier NBFCs/HFCs reported as SMA-1 or SMA-2 during this period were ineligible under the Scheme.


  • Relaxing the net profit criteria to the extent that the concerned NBFC/HFC should now have made a profit in at least one of the financial years of FY2017-18, FY 2018-19 and 2019-20. Earlier, the NBFC/HFC should have made a net profit in at least one of the financial years of FY 2017-18 and2018-19.


  • Relaxing the criteria regarding date of origination of assets to include newassets originating up to at least six months prior to the date of initial poolrating. Earlier, only assets originated up to 31.3.2019 were eligible underthe Scheme. Extending the Scheme from 30.6.2020 to 31.3.2021 for purchase of pooled assets.


  • The existing PCGS was issued on 11.12.2019 offering sovereign guarantee of up to 10% of first loss to PSBs for purchasing pooled assets worth rated BBB+ or above worth up to Rs. 1,00,000 crore, from financially sound NBFCs/ MFCs. The outbreak of COVID-19 along with lockdown of business activity has now necessitated adoption of additional measures to support NBFCs and HFCs - On the liabilities side by providing a sovereign guarantee to cover purchase of Bonds/CPs issued by NBFCs/HFCs as well as MFIs which also play a critical role in extending credit to small borrowers; and on the assets side by modifying the existing PCGS to widen its coverage,


  • Implementation schedule: The window for this one-time partial credit guarantee offered by Gol will remain open till 31st March, 2021 for purchase of pooled assets and for the period as specified under the Scheme for purchase of Bonds/CPs, or till such date by which Rs. 10,000 crore worth of guarantees, including both guarantees toward purchase of pooled assets and Bonds/ CPs, are provided by the Government, whichever is earlier.


  • Impact: COVID-19 crisis and consequent lockdown restrictions are likely to have a negative impact on both collections and fresh loan disbursements, besides a deleterious effect on the overall economy. This is anticipated to result not only in asset quality issues for the NBFC/ HFC/ MFI sector, but also low loan growth as well as higher borrowing costs for the sector, with a cascading effect on Micro, Small and Medium Enterprises (MSMEs) which borrow from them. While the RBI moratorium provides some relief on the assets side, it is on the liabilities side that the sector is likely to face increasing challenges.


  • The extension of the existing Scheme will address the liability side concerns. In addition, modifications in the existing PCGS will enable wider coverage of the Scheme on the asset side also. Since NBFCs, HFCs and MFIs play a crucial role in sustaining consumption demand as well as capital formation in small and medium segment, it is essential that they continue to get funding without disruption, and the extended PCGS is expected to systematically enable the same.




  • Details: The Scheme envisages setting up of 10 MW grid connected solar project and various solar off-grid applications like solar trees, solar drinking water kiosks, off-grid solar power plants with battery storage etc.


  • The Project will be taken up with a 100% Central Financial Assistance (CFA) support of around Rs. 25 Crores from Government of India through Ministry of New & Renewable Energy (MNRE). Implementation of this Project will be done by Odisha Renewable Energy Development Agency (OREDA).


  • The Scheme will meet all the energy requirements of Konark town with solar energy.


  • About the Temple: Built in the 13th century, the Konark temple was conceived as a gigantic chariot of the Sun God, with 12 pairs of exquisitely ornamented wheels pulled by seven horses.


  • It was built by King Narasimhadeva I, the great ruler of Ganga dynasty. The temple is included in UNESCO World Heritage Site in 1984 for its architectural greatness and also for the sophistication and abundance of sculptural work.


  • The temple is perfect blend of Kalinga architecture, heritage, exotic beach and salient natural beauty. It is protected under the National Framework of India by the Ancient Monuments and Archaeological Sites and Remains (AMASR) Act (1958) and its Rules (1959).


  • The Konark is the third link of Odisha’s Golden Triangle. The first link is Jagannath Puri and the second link is Bhubaneswar (Capital city of Odisha).


  • This temple was also known as ‘BLACK PAGODA’ due to its dark color and used as a navigational landmark by ancient sailors to Odisha. Similarly, the Jagannath Temple in Puri was called the “White Pagoda”. It remains a major pilgrimage site for Hindus, who gather here every year for the Chandrabhaga Mela around the month of February.




  • Under the Scheme,100% guarantee coverage to be provided by National Credit Guarantee Trustee Company Limited (NCGTC) for additional funding of up to Rs. 3 lakh crore to eligible MSMEs and interested MUDRA borrowers. The credit will be provided in the form of a Guaranteed Emergency Credit Line (GECL) facility.


  • The Scheme would be applicable to all loans sanctioned under GECL Facility during the period from the date of announcement of the Scheme to 31.10.2020.


  • Tenor of the loan under Scheme shall be four years with a moratorium period of one year on the principal amount. No Guarantee Fee shall be charged by NCGTC from the Member Lending Institutions (MLIs) under the Scheme.


  • Interest rates under the Scheme shall be capped at 9.25% for banks and FIs, and at 14% for NBFCs.


  • Benefits of the scheme: The scheme aims to mitigate the distress caused by COVID-19 and the consequent lockdown, which has severely impacted manufacturing and other activities in the MSME sector.


  • The scheme is expected to provide credit to the sector at a low cost, thereby enabling MSMEs to meet their operational liabilities and restart their businesses.


  • By supporting MSMEs to continue functioning during the current unprecedented situation, the Scheme is also expected to have a positive impact on the economy and support its revival.




  • Changes for the Welfare of the aged: Extension of Pradhan Mantri Vaya Vandana Yojana (PMVVY) up to 31st March, 2023.


  • Revised rateof returns of Senior Citizens Saving Scheme (SCSS). Approval for expenditure to be incurred on account of the difference between the market rate of return generated by LIC.


  • The minimum investment has also been revised to Rs.1,56,658 for pension of Rs.12,000/- per annum and Rs.1,62,162/- for getting a minimum pension amount of Rs.1000/- per month under the scheme.


  • About PMVVY: It is a Pension Scheme exclusively for the senior citizens aged 60 years and above. The Scheme can be purchased offline as well as online through Life Insurance Corporation (LIC) of India which has been given the sole privilege to operate this Scheme.


  • Maximum investment: One can invest a maximum amount of ₹15 lakh under Pradhan Mantri Vaya Vandana Yojana (PMVVY) scheme. The tenure of the policy is set at 10 years.


  • Key features of the scheme: Scheme provides initially an assured rate of return of 7.40 % per annum for the year 2020-21 per annum and thereafter to be reset every year. Pension is payable at the end of each period, during the policy term of 10 years, as per the frequency of monthly/ quarterly/ half-yearly/ yearly as chosen by the pensioner at the time of purchase. The scheme is exempted from GST.


  • On survival of the pensioner to the end of the policy term of 10 years, Purchase price along with final pension installment shall be payable. Loan upto 75% of Purchase Price shall be allowed after 3 policy years (to meet the liquidity needs). Loan interest shall be recovered from the pension installments and loan to be recovered from claim proceeds.


  • The scheme also allows for premature exit for the treatment of any critical/ terminal illness of self or spouse. On such premature exit, 98% of the Purchase Price shall be refunded.


  • On death of the pensioner during the policy term of 10 years, the Purchase Price shall be paid to the beneficiary.




  • Objectives: Increase in access to finance by micro food processing units. Increase in revenues of target enterprises. Enhanced compliance with food quality and safety standards. Strengthening capacities of support systems.


  • Transition from the unorganized sector to the formal sector. Special focus on women entrepreneurs and Aspirational districts. Encourage Waste to Wealth activities. Focus on minor forest produce in Tribal Districts.


  • Salient features: Centrally Sponsored Scheme. Expenditure to be shared by Government of India and States at 60:40.


  • 2,00,000 micro-enterprises are to be assisted with credit linked subsidy. Micro enterprises will get credit linked subsidy at 35 per cent of the eligible project cost with ceiling of Rs. 10 lakh.


  • Beneficiary contribution will be minimum 10 per cent and balance from loan. Seed capital will be given to SHGs (Rs. four lakh per SHG) for loan to members for working capital and small tools.


  • Scheme will be implemented over a 5-year period from 2020-21 to 2024-25. Cluster approach. Focus on perishables.


  • Administrative and Implementation Mechanisms: The Scheme would be monitored at Centre by an Inter-Ministerial Empowered Committee (IMEC) under the Chairmanship of Minister, FPI.


  • A State/ UT Level Committee (SLC) chaired by the Chief Secretary will monitor and sanction/ recommend proposals for expansion of micro units and setting up of new units by the SHGs/ FPOs/ Cooperatives. The States/ UTs will prepare Annual Action Plans covering various activities for implementation of the scheme, which will be approved by Government of India.


  • A third-party evaluation and mid-term review mechanism would be built in the programme. National level portal would be set-up wherein the applicants/ individual enterprise could apply to participate in the Scheme. All the scheme activities would be undertaken on the National portal.


  • Benefits of the scheme: Nearly eight lakh micro- enterprises will benefit through access to information, better exposure and formalization.


  • It will enable them to formalize, grow and become competitive. The project is likely to generate nine lakh skilled and semi-skilled jobs. Scheme envisages increased access to credit by existing micro food processing entrepreneurs, women entrepreneurs and entrepreneurs in the Aspirational Districts.


  • Better integration with organized markets. Increased access to common services like sorting, grading, processing, packaging, storage etc.


  • Why we need this scheme? There are about 25 lakh unregistered food processing enterprises which constitute 98% of the sector and are unorganized and informal. Nearly 66 % of these units are located in rural areas and about 80% of them are family-based enterprises.


  • This sector faces a number of challenges including the inability to access credit, high cost of institutional credit, lack of access to modern technology, inability to integrate with the food supply chain and compliance with the health &safety standards.


  • Strengtheningthis segment will lead to reduction in wastage, creation of off-farm job opportunities and aid in achieving the overarching Government objective of doubling farmers’ income.




  • Key features: PMMSY is a scheme to bring about Blue Revolution through sustainable and responsible development of fisheries sector in India under two components namely, Central Sector Scheme (CS) and Centrally Sponsored Scheme (CSS).


  • The Scheme will be implemented during a period of 5 years from FY 2020-21 to FY 2024-25. Nodal Ministry: Ministry of Fisheries, Animal Husbandry and Dairying.


  • Implementation: Central Sector Scheme (CS) – The entire project/unit cost will be borne by the Central government (i.e. 100% central funding).


  • The Centrally Sponsored Scheme (CSS) Component is further segregated into Non-beneficiary oriented and Beneficiary orientated sub­components/activities under the following three broad heads: Enhancement of Production and Productivity. Infrastructure and Post-Harvest Management. Fisheries Management and Regulatory Framework.


  • Major Benefits of PMMSY: Address the critical gaps in the fisheries sector and realize its potential. Augmenting fish production and productivity at a sustained average annual growth rate.


  • Improving availability of certified quality fish seed and feed, traceability in fish and including effective aquatic health management. Creation of critical infrastructure including modernisation and strengthening of value chain.


  • Creation of direct gainful employment opportunities to about 15 lakh fishers, fish farmers, fish workers, fish vendors and other rural/urban populations in fishing and allied activities.


  • Boost to investments in fisheries sector and increase of competitiveness of fish and fisheries products. Social, physical and economic security for fishers and fish workers.




  • 1st International Tea Day (ITD) is being celebrated by United Nations on 21st May.


  • Food and Agriculture Organization (FAO) will lead the observance of the Day.


  • The aim is to raise awareness of the long history and the deep cultural and economic significance of tea around the world.




  • It is a magnetic nanoparticle-based RNA extraction kit for use during testing for the detection of COVID-19.


  • Developed by Sree Chitra Tirunal Institute for Medical Sciences and Technology (SCTIMST) along with Agappe Diagnostics Ltd, an in vitro diagnostics manufacturing company based in Cochin.


  • The kit can be used for RNA extraction for RT-LAMP, RT-qPCR, RT-PCR and other isothermal and PCR based protocols for the detection of SARS-COV-2.


  • Significance: Agappe Chitra Magna RNA Isolation Kit priced at around Rs. 150 per kit is expected to reduce the cost of testing and the country’s dependence on imported kits which cost around Rs 300.




  • It is an intellectual revolution and sociopolitical reform movement that occurred in China on May 4th in 1919.


  • The Movement unfolded sparked by the refusal of delegates at the Paris Peace Conference to return former German colonies in China to Chinese sovereignty at the conclusion of World War I.


  • The students protested not only Western imperialism but their own government’s weakness.




  • A sonic boom is said to occur when an object travels through the air faster than the speed of sound and creates shock waves. This can lead to a huge emission in energy, usually in the form of sound, which can be similar to an explosion of thunderclap.


  • Effects: The sonic boom is a continuous sound which is emitted by the aircraft all the while it is travelling at a supersonic speed. If the aircraft is flying at a low altitude, the sonic boom may also lead to tremors similar to earthquakes and shattering of glass.