Science and Technology MCQ Set 46
Showing question 226 to 230 of total 301 MCQs
MCQ Set: 46
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Question No: 226
North Korea launched a medium long range missile with _____ capabilities on May 14, 2017.
- Ballistic
- Nuclear
- Long Range
- Both a and b
Answer and Explanation
Answer: D
Explanation
North Korea indicated the missile it launched over the weekend was a new type of “medium long-range” ballistic rocket that can carry a heavy nuclear warhead.
North Korean propaganda must be considered with wariness as Pyongyang has threatened for decades to reduce Seoul to a “sea of fire.”
This missile launch may mark another big advance toward the North’s goal of fielding a nuclear-tipped missile capable of reaching the US mainland.
This launch tested a new type of missile in Pyongyang’s arsenal.
The test is also an immediate challenge to South Korea’s new leader, Moon Jae-in, a liberal elected last week who expressed a desire to reach out to North Korea.
Pyongyang’s aggressive push to boost its weapons program also makes it one of the Trump administration’s most urgent foreign policy worries, though Washington has struggled to settle on a policy.
North Korea’s official Korean Central News Agency called the missile a “new ground-to-ground medium long-range strategic ballistic rocket,” and indicated the “Hwasong-12” was “capable of carrying a large, heavy nuclear warhead.”
The missile flew for half-an-hour and reached an unusually high altitude before landing in the Sea of Japan, the South Korean, Japanese and US militaries said.
The rocket, “newly designed in a Korean-style,” flew 787 kilometers (490 miles) and reached a maximum altitude of 2,111.5 kilometers (1,310 miles).
North Korea “verified the homing feature of the warhead under the worst re-entry situation and accurate performance of detonation system.”
North Korea is not thought to be able yet to make a nuclear warhead small enough to mount on a long-range missile.
Question No: 227
Ministry of health and family welfare has launched a new vaccine for which disease in May 2017?
- Pneumonia
- TB
- Diptheria
- Malaria
Answer and Explanation
Answer: A
Explanation
Minister for Health and Family Welfare J P Nadda has launched new Pneumococcal Conjugate Vaccine, PCV, for Pneumonia at Lal Bahadur Shastri Medical College Hospital in Mandi district of Himachal Pradesh.
The vaccine is a part of government’s Universal Immunization Programme (UIP).
Henceforth, the vaccine will be administered under routine immunization programme.
The vaccine would help in controlling pneumonia and reducing the child mortality rate.
In India, more than 1 lakh children die of pneumonia every year.
The vaccine will provide protection against 13 types of pneumococcal bacteria which results in pneumonia.
This is the 12th disease for which the Health Ministry has launched a vaccine.
The vaccine Pneumococcal Conjugate protects against Streptococcus pneumonia and diseases such as pneumonia, ear infections, sinus infections and meningitis.
Pneumococcal Conjugate Vaccine was first introduced in 2000.
The whole of Himachal Pradesh as well as six districts of Uttar Pradesh and seventeen districts of Bihar will be covered under the first phase of the immunisation programme.
PCV: Know More
Pneumococcal conjugate vaccine (PCV) is a pneumococcal vaccine and a conjugate vaccine used to protect infants, young children, and adults against disease caused by the bacterium Streptococcus pneumoniae (the pneumococcus).
There are currently three types of PCV available on the global market, which go by the brand names: Prevnar (called Prevenar in some countries), Synflorix and Prevnar 13.
PVC protects against 13 bacteria related to pneumococcal infection.
Question No: 228
What is the name of the Indian research station in Antarctica?
- Maitri
- Mitr
- Matri
- None of the above
Answer and Explanation
Answer: A
Explanation
India has taken the decision to replace its Maitri research station in Antarctica with a new one in the next three to four years.
India is poised to expand its research activity in the coldest continent and a new ship, with a special ice-cutting facility, will be procured for the purpose.
India is also drafting its own laws to safeguard its interest in Antarctica, as it is currently governed by international laws.
The Indian Antarctic Program is a multi-disciplinary, multi-institutional program under the control of National Centre for Antarctic and Ocean Research, Ministry of Earth Sciences, Government of India.
It was initiated in 1981 with the first Indian expedition to Antarctica.
The program gained global acceptance with India’s signing of the Antarctic Treaty and subsequent construction of the Dakshin Gangotri Antarctic research base in 1983.
Gangotri base was superseded by the Maitri research station from 1990.
Bharati is the newest base that was commissioned in 2015, constructed out of 134 shipping containers.
India has carried out over 30 scientific expeditions to the Antarctic as of 14 October 2010.
Maitri: Know More
Maitri is India’s second permanent research station in Antarctica as part of the Indian Antarctic Programme.
The name was suggested by the then PM Mrs Indira Gandhi
The expedition left the shores of India on 03 Dec 1984.
Work on the station was first started by the Indian Expedition which landed there in end Dec 1984, the team was led by Dr. B B Bhattacharya.
It was built and finished in 1989, shortly before the first station Dakshin Gangotri was buried in ice and abandoned in 1990–91.
Maitri is situated on the rocky mountainous region called Schirmacher Oasis.
It is only 5 km away from Russian Novolazarevskaya Station.
Question No: 229
Scientists have developed a new technology to turn any surface into a ______screen.
- LED
- LCD
- OLED
- Touch
Answer and Explanation
Answer: D
Explanation
Scientists have developed a new technology that can turn any surface - including walls, furniture and steering wheels - into a touch screen using tools as simple as a can of spray paint.
The method is to apply electrically conductive coatings or materials to objects or surfaces, or to craft objects using conductive materials, researchers said.
By attaching a series of electrodes to the conductive materials, researchers from Carnegie Mellon University in the US showed they could use a well-known technique called electric field tomography to sense the position of a finger touch.
With the new technology dubbed Electrick, conductive touch surfaces can be created by applying conductive paints, bulk plastics or carbon-loaded film.
Electrick is both accessible to hobbyists and compatible with common manufacturing methods, such as spray coating, vacuum forming and casting/moulding, as well as 3D printing.
Like many touchscreens, Electrick relies on the shunting effect — when a finger touches the touchpad, it shunts a bit of electric current to ground.
By attaching multiple electrodes to the periphery of an object or conductive coating, researchers showed they could localise where and when such shunting occurs.
Electrick can detect the location of a finger touch to an accuracy of one centimetre, which is sufficient for using the touch surface as a button or slider.
Question No: 230
Where is a major portion of the world’s biggest X-ray laser located?
- Germany
- Italy
- Spain
- None of the above
Answer and Explanation
Answer: A
Explanation
The world’s biggest X-ray laser has generated its first beam of light, that will allow scientists to get a glimpse of new materials, drugs and chemical reactions at the atomic level.
The 3.4-kilometre-long European XFEL, most of which is located in underground tunnels in Germany, will usher a new era of European research, according to scientists.
The biggest X-ray light has a wavelength of 0.8 nanometre - about 500 times shorter than that of visible light.
At first lasing, the laser had a repetition rate of one pulse per second, which will later increase to 27,000 per second.
The achievable laser light wavelength corresponds to the size of an atom, meaning that the X-rays can be used to make pictures and films of the nanocosmos at atomic resolution - such as of biomolecules, from which better understanding of the basis of illnesses or the development of new therapies could be developed.
The facility, to which many countries around the world contributed know-how and components, has passed its first big test with flying colours.
Scientists can now begin to direct the X-ray flashes with special mirrors through the last tunnel section into the experiment hall, and then step by step start the commissioning of the experiment stations.
The first laser light produced today with the most advanced and most powerful linear accelerator in the world marks the beginning a new era of research in Europe.
The European XFEL will provide scientists with the most detailed images of the molecular structure of new materials and drugs and novel live recordings of biochemical reactions.
The facility will enable research into chemical processes and catalytic techniques, with the goal of improving their efficiency or making them more environmentally friendly; materials research; or the investigation of conditions similar to the interior of planets.
The X-ray laser light of the European XFEL was generated from an electron beam from a superconducting linear accelerator, the key component of the X-ray laser.