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- Question
The researchers of this country developed a system that can produce electricity and hydrogen fuel from carbon dioxide.
Options- A. Japan
- B. China
- C. South Korea
- D. Russia
- Correct Answer
- South Korea
ExplanationScientists from Ulsan National Institute of Science and Technology (UNIST) in South Korea have developed a system that can produce electricity and hydrogen fuel from carbon dioxide. The Hybrid Na-CO2 system can continuously produce electrical energy and hydrogen through efficient carbon dioxide (CO2) conversion with stable operation for over 1,000 hours. The key to this technology is the easy conversion of chemically stable CO2 molecules to other materials. Much of human CO2 emissions are absorbed by the ocean and turned into acidity. The researchers focused on this phenomenon and came up with the idea of melting CO2 into water to induce an electrochemical reaction.If acidity increases, the number of protons increases, which in turn increases the power to attract electrons. If a battery system is created based on this phenomenon, electricity can be produced by removing CO2. In particular, this system has shown stability to the point of operating for more than 1,000 hours without damage to electrodes. The system can be applied to remove CO2 by inducing voluntary chemical reactions. - 1. Who is planning to send a probe to study the sun early next year?
Options- A. JAXA
- B. NASA
- C. ISRO
- D. BARC Discuss
- 2. Name the enzyme discovered by Center for Cell and Molecular Biology (CCMB) scientists which helps to cut bacterial cell walls.
Options- A. Xanthine dehydrogenase
- B. Ribonucleotide reductase
- C. Firefly luciferase EC
- D. Murein EndopeptidiaseK Discuss
- 3. ISRO aims to send human astronauts to space by the year of?
Options- A. 2020
- B. 2021
- C. 2022
- D. 2023 Discuss
- 4. In which asteroid Scientists found the evidence of abundant water-bearing minerals?
Options- A. Apollo
- B. Chiron
- C. Amor
- D. Bennu Discuss
- 5. SpaceX launched Israel's first moon lander, "Beresheet", from Florida It's total weight is;
Options- A. 750 Kg
- B. 600 Kg
- C. 525 Kg
- D. 585 kg Discuss
- 6. How many American astronauts are successfully replaced ageing batteries on ISS?
Options- A. 5
- B. 3
- C. 4
- D. 2 Discuss
- 7. Which spacecraft of NASA broke the record for smallest space object ever orbited, after successfully entering into orbit around the asteroid Bennu?
Options- A. OSIRIS-Rex
- B. RAMSUS-Rfx
- C. YIPOP-Yla
- D. HUTCH-Las Discuss
- 8. FDA approved first Dengue vaccine for the prevention of dengue disease. It's named as;
Options- A. TetraVax-DV
- B. DENVax
- C. CYD-TDV
- D. Dengvaxia Discuss
- 9. China launched a new communication satellite using a Long March - 3B carrier rocket. It was named as;
Options- A. ChinaSat 6C
- B. Gaofen 1
- C. ChinaSat 9
- D. Dong Fang Hong I Discuss
- 10. How many astronauts are reached to International Space Station (ISS) on Russian Soyuz spacecraft?
Options- A. 8
- B. 4
- C. 3
- D. 6 Discuss
Science problems
Search Results
Correct Answer: ISRO
Explanation:
Indian Space Research Organization is planning to send a probe to study the sun early next year. ISRO chairman Dr K Sivan currently scientists are exploring possibilities to study more about Sun and the probe named Aditya-L1 will be sent to observe the solar corona, the outer layers of the Sun. The satellite would be ed in a halo orbit around the L1 (Lagrangian point A) of the Sun-Earth system so that it has the advantage of continuously viewing the Sun without any occultation or eclipses. The L1 is 1.5 million kms from t the mission to send Indian astronauts to space by 2022 is well on stream.
Correct Answer: Murein EndopeptidiaseK
Explanation:
The Center for Cell and Molecular Biology (CCMB) scientists have discovered a new enzyme called "Murein EndopeptidiaseK" while studying the cell growth in bacteria. This new discovery has paved the way for a new drug treatment that prevents anti-bacterial resistance by existing antibiotics.It would act on the protein of cell wall in Escherichia coli (E. coli), a bacterium found in the lower intestine of warm-blooded organisms.Pavan Kumar Chodisetti, research student and his mentor Dr. Manjula Reddy were the backbone of this discovery. The finding has been published in the latest issue of Proceedings of National Academy of Sciences, USA.
Correct Answer: 2021
Explanation:
The year 2021 will be a busy year for the Indian Space Research Organisation (ISRO) as it has set itself the target to send astronauts to space. The Gaganyaan project by the space agency will make India the fourth nation to independently send humans into space announced ISRO chief Dr. K Sivan. The Gaganyaan project was announced by PM Modi on Independence Day last year and union minister Ravi Shankar Prasad last month had said that three Indian astronauts will be sent to space for up to seven days by 2022 as part of the Gaganyaan.
Correct Answer: Bennu
Explanation:
Scientists have discovered evidence of abundant water-bearing minerals on the surface of the near-earth asteroid Bennu. Data from NASA's OSIRIS-REx spacecraft that is currently orbiting the asteroid confirm the presence of aqueously altered, hydrated minerals on its surface. Scientists say similar objects may have seeded the earth with water and organic materials.
Correct Answer: 585 kg
Explanation:
Israel's first moon lander, the 585 kg "Beresheet" ("Genesis" in Hebrew), was launched atop a Falcon 9 rocket from the private US-based SpaceX in Florida, United States. At a cost of USD 100 million, it is the lowest-budget spacecraft to ever undertake such a mission. It is part of renewed global interest in the Moon, sometimes called the "Eighth Continent" of the Earth. The project is funded almost entirely by donations making it the first privately backed lunar lander mission.It was notably financed by businessman and philanthropist Morris Kahn. Other partners include Israel Aerospace Industries (IAI), Israel's space agency and Israel's Ministry of Science and Technology. Beresheet carries a "time capsule" loaded with digital files containing a Bible, children's drawings, Israeli songs, memories of a Holocaust survivor and the blue-and-white Israeli flag. Landing is the main mission, but the spacecraft also carries a scientific instrument to measure the lunar magnetic field, which will help understanding of the Moon's formation.
Correct Answer: 2
Explanation:
NASA's Anne McClain and Nick Hague took a spacewalk on 22nd March to replace ageing batteries on the International Space Station. Two American astronauts worked for several hours to swap three nickel-hydrogen batteries with more powerful lithium-ion ones. The duo overcame minor struggles in their first task, which involved attaching a tool bag on one of the station's trusses for possible future use. The space station uses solar panels to generate power but the batteries are used when it is in the dark and not getting power from the sun.
Correct Answer: OSIRIS-Rex
Explanation:
NASA's OSIRIS-REx spacecraft broke a record after successfully entering into orbit around the asteroid Bennu - the smallest cosmic object ever to be orbited by a spacecraft. NASA's OSIRIS-REx spacecraft, 110 million kilometers away, carried out a single, eight-second burn of its thrusters. The manoeuvre placed the spacecraft into orbit around the asteroid Bennu. The spacecraft will circle Bennu about 1.75 kilometres from its centre, closer than any other spacecraft has come to its celestial object of study.
Correct Answer: Dengvaxia
Explanation:
The Food and Drug Administration (FDA), United States has approved first vaccine named Dengvaxia for the prevention of dengue disease but with certain conditions that use dengue vaccine only in people who have a previous history of the disease. The vaccine is also known as CYD-TDV and made by company Sanofi Pasteur. The vaccine is a live, attenuated dengue virus. Under the vaccination, 3 doses will be provided to the patient and after 1st dose there will be a difference of 6 months between 1st dose and 2nd dose and also a difference of 6 months between 2nd dose and 3rd dose.
Correct Answer: ChinaSat 6C
Explanation:
China lifted its broadband communication system by launching a Long March - 3B carrier rocket with 'ChinaSat 6C' into a geostationary orbit in Sichuan province. The'ChinaSat 6C' was launched from Xichang Satellite Launch Center in Sichuan province. It is a 19 story tall rocket which is expected to provide high quality radio and television transmission services. It marked 300th launch of the Long March carrier rocket series which was developed by the China Aerospace Science and Technology Corporation and will be operated by China Satellite Communications Co. Ltd. The satellite will cover China, Australia, New Zealand and the South Pacific Island Countries. Nearly 97% of China's total launch missions was on Long March rocket series.
Correct Answer: 3
Explanation:
3 astronauts, Nick Hague and Christina Koch from US and Alexey Ovchinin from Russia arrived at the International Space Station (ISS) on Russian Soyuz spacecraft which was launched from Kazakhstan's Baikonur Cosmodrome on 14th March 2019. Soyuz spacecraft carries people and supplies to and from International Space Station and it has become the sole means of transportation after the retirement of Space Shuttle in 2011.
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