Current Affairs Quiz - April, 2019

Notes:
On April 1, ISRO has successfully launched India’s latest EMISAT defence satellite from the Sriharikota spaceport. In today’s mission, the rocket PSLV-C45 flew in a new configuration called “QL”. In this configuration, the rocket is fitted with four longer versions of strap-on motors that provide the vehicle the required additional thrust. Earlier, the rocket used to be in “XL” version with six strap-on motors or two or with no strap-on motors known as core alone configuration. The PSLV-C45 successfully injected EMISAT in a 748-km sun-synchronous polar orbit and 28 international customer satellites in a 504-km orbit. Of these, 24 are from the US, two from Lithuania, and one each from Spain and Switzerland. EMISAT is a satellite built around ISRO’s Mini Satellite-2 (IMS-2) bus weighing about 436 kg. The satellite is intended for electromagnetic spectrum measurement.

Notes:
Using platinum nanocatalyst, a two-member team at the IIT Madras has successfully converted petroleum waste-product toluene into benzoic acid. Benzoic acid is used as a food preservative (E210) and medicine for fungal/bacterial infection. Toluene is converted into benzoic acid through selective and controlled oxidation in the presence of a catalyst — binaphthyl-stabilised platinum nanoparticles (Pt-BNP). Generally, organic reactions are carried out using organic solvents, which makes it expensive and also generates toxic waste. So, the team led by G. Sekar used water as solvent to make it environment-friendly. Also, a green oxidant (70% aqueous tert-butyl hydroperoxide or TBHP) is used for converting toluene into benzoic acid. When toluene is oxidised, it gives four products. But, the team used catalyst that they developed and then only benzoic acid is produced. No alcohol, aldehyde or ester is produced. The yield of benzoic acid varied from 68-96% depending on whether the toluene used is electron-deficient or electron-rich.

Notes:
The Hongkou district of Shanghai has recently claimed to have the world’s first district with 5G coverage and a broadband gigabit network. It conducted trial runs of the 5G network, backed by telecom services provider China Mobile. Shanghai also aims to build over 10,000 5G base stations by the end of this year and the number of 5G base stations could cross 30,000 in 2021. 5G is the next generation of cellular technology with download speed 10 to 100 times faster than the 4G LTE networks.

Notes:
J Mahendra (79), the veteran filmmaker, screenwriter and actor, has passed away in Chenai, Tamil Nadu on 2nd April 2019. He was known for infusing realism in Tamil cinema and for giving superstar Rajinikanth his career breakthrough with “Mullum Malarum”. He started his journey in the movies as a screenplay writer and made his directorial debut with 1978 film “Mullum Malarum”. The director’s popularity peaked with his movies “Uthiri Pookkal” (1979) and “Nenjathai Killathey” (1980). In the past few years, Mahendran had switched to acting. He played pivotal parts in “Kamaraj” (2004), “Petta” opposite Rajinikanth and Vijay’s “Theri”. He was last seen in Tamil film “Boomerang”, which released on March 8. Mahendran was also the founding member of Blue Ocean Film and Television Academy here.

Notes:
India has recently signed an agreement with National Bank for Agriculture and Rural Development Consultancy Service (NABCONS) for setting up India-Africa Institute of Agriculture and Rural Development (IAIARD) in Malawi. The agreement is a part of India’s efforts to enhance capacity in the areas of agro-financing and entrepreneurship development for African countries. IAIARD will be a Pan-African Institute wherein trainees not only from Malawi but also from other African countries, will receive training to develop their human resources and build their capacity. The entire expenditure on faculty from India, the travel, logistics and training course expenses for students from other African countries will be borne by the Government of India (GoI) for an initial period of 3 years. This institute will be the first of its kind developed in an African country by India. This will further strengthen the bilateral relations with Malawi and India’s relations with African Union.

Notes:
The book titled “Kundan: Saigal’s Life & Music” has been penned by Sharad Dutt, documentary filmmaker and former DDG of Doordarshan. The genius of legendary singer K L Saigal, his timeless compositions and the golden era of Indian cinema have been brought alive in a book. The book has been trans-created in English by Jyoti Sabharwal of Stellar Publishers and will be released on April 4, the 115th birth anniversary of Saigal. Some of Saigal’s all time hits are ‘Jab dil hi toot gaya’, ‘Ek bangla bane nyara’, ‘Dukhake din aab bitat nahin’, ‘Duniyamen hun duniyaka talabgaar nahin hun’ and ‘So ja rajkumari so ja’.

Notes:
According to a new collaborative study by the Queen’s University Belfast and Aberystwyth University in the UK, the sun’s magnetic field is ten times stronger than previously thought. Using the Swedish one-metre Solar Telescope at Roque de los Muchachos Observatory, in the Canary Islands, David Kuridze studied a particularly strong solar flare which erupted near the surface of the Sun on September 10, 2017. A combination of favourable conditions and an element of luck enabled the team to determine the strength of the flare’s magnetic field with unprecedented accuracy. The researchers believe the findings have the potential to change our understanding of the processes that happen in the Sun’s immediate atmosphere. The study found that the sun’s corona extends millions of kilometres above the surface, measuring 1,400,000 kilometres across — 109 times larger than Earth — and 150,000,000 km from Earth. Solar flares appear as bright flashes and occur when magnetic energy that has built up in the solar atmosphere is suddenly released. These solar flares can lead to storms which, if they hit Earth, form the northern lights — the Aurora Borealis. They can also disrupt communications satellites and GPS systems.

Notes:
The International Day for Mine Awareness and Assistance in Mine Action is observed every year on April 4 to raise awareness about landmines, explosive remnants of war, and progress toward their eradication. The 2019 Theme is “United Nations Promotes SDGs – Safe Ground – Safe Home”.

Notes:
Chinese scientists have discovered a possible “death switch” mechanism in plant’s immune system that triggers infected cells to self-destruct, thus limiting the spread of the disease and keeping other parts of the plant healthy. This is as per the findings published in the journal ‘Science’. The discovery provides clues to cell death control and immunity for plants. The researchers hope further research can lead to a new generation of disease-resistant crops that use significantly less pesticide and are more environmentally friendly. The research was done by scientists from Tsinghua University and the Chinese Academy of Sciences’ Institute of Genetics and Development Biology. The ‘death switch’ is usually harmless to the plant because it only affects diseased cells, which are a tiny portion of the entire plant.

Notes:
The Badshah of Bollywood, Shah Rukh Khan has been conferred with Honorary Doctorate from University of Law, London. Earlier, he received two honorary doctorates from The University of Edinburgh and The University of Bedfordshire. Over the years, he has established himself as a successful actor, film producer, television host, philanthropist and an entrepreneur. He has lent support to the Indian government’s campaigns, including Pulse Polio and National Aids Control Organization. He has worked closely with several charitable foundations, including the Make-a-Wish Foundation. Besides being an entrepreneur, Shahrukh has forayed into the field of sports with his IPL team Kolkata Knight Riders, aids acid attack survivors through his non-profit organisation Meer Foundation. At the World Economic Forum 2018 held in Davos, he was honoured with the Crystal Award.