Current Affairs Quiz - April, 2019

Notes:
Swiss-based NRI scientist Dr Rajendra Joshi, who belongs to Rajasthan, has been conferred with the 2019 Pravasi Bhartiya Samman Award (PBSA) by the President of India Ram Nath Kovind. Dr Joshi is honoured for his outstanding achievement in the field of Science and in recognition of his valuable contribution in promoting the honour and prestige of India and in fostering the interests of Overseas Indians. He is mainly credited with developing path-breaking medicine Tecfidera (BG12) for multiple sclerosis. The theme of 2019 Pravasi Bharatiya Divas convention was ‘Role of Indian Diaspora in building New India.’

Notes:
South Korea has won the 2019 Sultan Azlan Shah Hockey tournament. In the final, they defeated five time champion India in a penalty shootout 4-2 at Ipoh in Malaysia on April 1. Till the stipulated time both the teams had a score of 1 goal each. Even India was leading with one goal till half time. Simaranjit Singh hit a goal for India. Jang Jong Hyun scored the goal for South Korea. Hosts Malaysia defeated Canada 4-2 and secured the 3rd place. Asian games Gold medalist Japan stood at 5th place, defeating Poland 6-1.

Notes:
The 13th edition of Earth Hour 2019 was observed on March 30 with theme “#Connect2Earth” to encourage people across the world to turn off non-essential electric lights for one hour from 8:30 to 9:30 p.m. It calls for greater awareness and more sparing use of resources, especially fossil fuels that produce carbon gases and lead to global warming. On this day, the World Wide Fund (WWF) for Nature-India made an appeal to citizens to join the Earth Hour 2019 to inspire millions across the country to shift to more sustainable practices and minimize negative impacts on the planet.

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:
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:
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:
Vipin Anand Monday has recently taken charge as the new Managing Director (MD) of the Life Insurance Corporation of India (LIC). Prior to this, he was in charge of LIC’s western zone, comprising of 23 divisions, covering the states of Maharashtra, Gujarat, Goa and Union Territories of Daman and Diu, and Dadra and Nagar Haveli. During his service of more than 35 years, Anand has handled several important assignments in various capacities and departments. He was instrumental in setting up LIC’s operations in Singapore and Bangladesh.

Notes:
The Japan Aerospace Exploration Agency (JAXA) has said that its Hayabusa2 spacecraft has successfully blasted the surface of an asteroid Ryugu to make a crater on its surface. The move will pave the way for the collection of underground samples for possible clues to the origin of the solar system. For this, the Hayabusa2 dropped a “small carry-on impactor” made of copper onto the asteroid and the spacecraft safely evacuated and remained intact. Now, JAXA is analyzing data to examine if or how the impactor made a crater. The copper explosive is the size of a baseball weighing 2 kg. If successful, it would be the first time for a spacecraft to take such materials. The asteroid, named Ryugu after an undersea palace in a Japanese folktale, is about 300 million kilometers (180 million miles) from Earth. Earlier, Hayabusa2 successfully touched down on a tiny flat surface on the boulder-rich asteroid in February 2019, when the spacecraft also collected some surface dust and small debris.

Notes:
C R Anandavally (67), the well-known dubbing artist in the Malayalam film industry, has passed away on April 5, 2019. She began her film career doing small roles in various Malayalam films beginning with “Eanippadikkal” in 1973 and lent her voice to actress Rajasri in the film “Devi Kanyakumari” in 1974. The 1980 movie ‘Manjil Virinja Pookkal’ in which she dubbed for actress Poornima Jayaram became a turning point in her career and she was flooded with offers and had been active since then. Among the leading heroines she has lent her voice are Geetha, ‘Silk’ Smitha, Sumalatha, Madhavi, Menaka, Ambika, Urvasi, Jayapradha, Karthika, Parvathy, Gauthami, Suhasini, Sobhana, Revathi, Nanditha Bose and Khushboo. Anandavally won a Kerala State Award for the Malayalam film ‘Aadharam’ in which she dubbed for actress Geetha. Hailing from Kollam, Anandavally had also acted in Kerala Peoples Arts Club (KPAC) dramas.

Notes:
The Sri Lankan army has decided to conduct its largest ever military exercise titled ‘Exercise Western Shield’ in July 2019 to provide an opportunity for army trainees to march through areas that are not usually accessible to others, except forest conservation authorities. It will see participation of over 5,000 soldiers and will extend from Mannar to Puttalam, including Kalpitiya, Wilpattu National Park, Mavillu and Thabbowa Forest Reserves and the Western coastal belt. The exercise is coincided with 10 years since the end of the island’s 30-year civil conflict between government troops and Tamil Tiger rebels.