Test: Current Affairs November- 2020


14 Questions MCQ Test Science & Technology for UPSC CSE | Test: Current Affairs November- 2020


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This mock test of Test: Current Affairs November- 2020 for UPSC helps you for every UPSC entrance exam. This contains 14 Multiple Choice Questions for UPSC Test: Current Affairs November- 2020 (mcq) to study with solutions a complete question bank. The solved questions answers in this Test: Current Affairs November- 2020 quiz give you a good mix of easy questions and tough questions. UPSC students definitely take this Test: Current Affairs November- 2020 exercise for a better result in the exam. You can find other Test: Current Affairs November- 2020 extra questions, long questions & short questions for UPSC on EduRev as well by searching above.
QUESTION: 1

Supercomputing plays an important role in which of the following fields?

  1. Quantum mechanics

  2. Weather forecasting

  3. Oil and gas exploration

  4. Genomics

  5. Drug discovery 

Select the correct answer code:

Solution: Supercomputers are used for a wide range of computationally intensive tasks in various fields, including quantum mechanics, weather forecasting, flood prediction, climate research, oil and gas exploration,genomics and drug discovery.

QUESTION: 2

Consider the following statements regarding IndiGen programme.

  1. IndiGen programme aims to undertake the whole genome sequencing of thousands of Indian individuals representing diverse ethnic groups from India.

  2. The human genome data sets could be utilised for prioritising Pharmacogenomics variants specific for Indian population for optimising therapy and minimising adverse events.

  3. IndiGen programme is the initiative of the Council of Scientific and Industrial Research (CSIR).

Which of the above statements is/are correct?

Solution:

Genomics for Public Health in India (IndiGen) programme:

  • CSIR initiated the Program in April 2019.

  • It aims to undertake the whole genome sequencing of thousands of individuals representing diverse ethnic groups from India.

  • The objective is to enable genetic epidemiology and develop public health technologies applications using population genome data.

  • The human genome data sets would also be utilised for prioritising Pharmacogenomics variants specific for Indian population for optimising therapy and minimising adverse events.

QUESTION: 3

Earth-observation satellites are used for which of the following purposes?

  1. Land and forest monitoring

  2. Mapping of water and mineral resources

  3. Weather and climate observations

  4. Soil assessment

Select the correct answer code:

Solution:

What are earth-observation satellites used for?

  • Land and forest mapping and monitoring, mapping resources like water or minerals or fishes, weather and climate observations, soil assessment, and geospatial contour mapping are all done through the earth- observation satellites.

  • They are intended for non-military uses such.

As environmental monitoring, meteorology, cartography and others.

QUESTION: 4

Consider the following statements regarding Radar Imaging Satellites.

  1. Radar Imaging Satellites are basically Earth observation satellites.

  2. They can be used for border surveillance, to deter insurgent infiltration and for anti-terrorist operations.

  3. One of Radar Imaging Satellites' main disadvantages is that they are not all-weather satellites since they are affected by weather, cloud or fog.

Which of the above statements is/are correct?

Solution:
  • RISAT (Radar Imaging Satellite) is a series of Indian radar imaging reconnaissance satellites built by ISRO. They provide all-weather surveillance using synthetic aperture radars (SAR).

  • The RISAT series are the first all-weather Earth observation satellites from ISRO. Previous Indian observation satellites relied primarily on optical and spectral sensors which were hampered by cloud cover.

  • Advantages of radar imaging over optical instruments: Radar imaging is unaffected by weather, cloud or fog, or the lack of sunlight. It can produce high-quality images in all conditions and at all times.

QUESTION: 5

Consider the following statements regarding over-the-top (OTT) platforms.

  1. Over-the-top platforms are audio, and video hosting and streaming services offered directly to viewers via the Internet.

  2. In India, OTT platforms are currently under the purview of the Ministry of Electronics and Information Technology.

Which of the above statements is/are correct?

Solution:
  • The government has brought video streaming over-the-top (OTT) platforms such as Netflix, Amazon's Prime Video, Hotstar, and others under the ambit of the Ministry of Information and Broadcasting.

  • OTT, or over-the-top platforms, are audio and video hosting and streaming services that started as content hosting platforms, but soon branched out into the production and release of short movies, feature films, documentaries, etc. web-series themselves. 

  • These platforms offer a range of content and use artificial intelligence to suggest users the content they are likely to view based on their past viewership on the platform.

  • So far in India, no laws or rules regulate OTT platforms as it is a relatively new medium of entertainment. Unlike television, print or radio, which follow guidelines released by governments, OTT platforms, classified as digital media or social media, had little to no regulation on the choice of content they offered, the subscription rates, certification for adult movies and others.

 

QUESTION: 6

Consider the following statements regarding space internet.

  1. Starlink network project of SpaceX is one of several ongoing efforts to start beaming data signals from space.

  2. Usually, Geostationary orbit is used for placing satellites because satellites in this orbit complete one revolution of the Earth while the earth rotates once on its axis.

Which of the above statements is/are correct?

Solution:
  • Starlink is a satellite internet constellation being constructed by SpaceX providing satellite Internet access.

  • The aim is to provide low-cost and reliable space-based Internet services to the world.

  • Why use low earth orbit instead of geostationary?

  • Geostationary orbit is located at the height of 35,786 km over the Earth's surface, directly above the Equator. Satellites in this orbit move at speeds of about 11,000 km per hour and complete one revolution of the Earth while the earth rotates once on its axis. To the observer on the ground, therefore, a satellite in a geostationary orbit appears stationary.

  • Advantages: Signals from geostationary orbit can cover a huge part of the Earth. Signals from one satellite can cover roughly a third of the planet — and three to four satellites would be enough to cover the entire Earth. Also, because they appear to be stationary, it is easier to link to them.

  • Then what's the issue?

  • There is a time lag — called latency — between a user seeking data, and the server sending that data.

  • And because data transfers cannot happen faster than the speed of light (in reality, they take place at significantly lower speeds), the longer the distance that needs to be covered the greater is the time lag, or latency.

  • A transmission from a satellite in geostationary orbit has a latency of about 600 milliseconds.

  • A satellite in the lower orbit, 200-2,000 km from the Earth's surface, can bring the lag down to 20-30 milliseconds, roughly the time it takes for terrestrial systems to transfer data. But lower orbits have their own problem.

  • Owing to their lower height, their signals cover a relatively small area. As a result, many more satellites are needed to reach signals to every part of the planet.

QUESTION: 7

Consider the following statements regarding Genetically modified crops.

  1. Genetic engineering aims to introduce an alien gene which could be only from a plant, into the seeds to get the desired effects.

  2. In India, the Genetic Engineering Appraisal Committee (GEAC) is the apex body that allows for GM crops' commercial release.

  3. More than 95 per cent of India's cotton area is under Bt cotton.

Which of the above statements is/are correct?

Solution:

  • What are genetically modified seeds?

  • Conventional plant breeding involves crossing species of the same genus to provide the offspring with both parents' desired traits. Genetic engineering aims to transcend the genus barrier by introducing an alien gene in the seeds to get the desired effects. The alien gene could be from a plant, an animal or even a soil bacterium.

  • Bt cotton, the only GM crop in India, has two alien genes from the soil bacterium Bacillus thuringiensis (Bt) that allows the crop to develop a protein toxic to the common pest pink bollworm.

  • In India, the Genetic Engineering Appraisal Committee (GEAC) is the apex body that allows for GM crops' commercial release. In 2002, the GEAC had allowed the commercial release of Bt cotton. More than 95 per cent of the country's cotton area has since then come under Bt cotton. Use of the unapproved GM variant can attract a jail term of 5 years and a fine of Rs 1 lakh under the Environmental Protection Act, 1986.

QUESTION: 8

Juice Jacking, sometimes seen in news is

Solution: Juice Jacking is a type of cyber-attack that originates from USB charging port installed at public places such as airports, cafes, bus stands, etc. Once the device is plugged-in, and the connection is established, it either installs malware or secretively copies sensitive data from a smartphone, tablet, or another computing device.

QUESTION: 9

Consider the following statements regarding Measles.

  1. Measles is a highly contagious disease caused by a virus.

  2. It is an airborne disease which spreads easily from one person to the next through the coughs and sneezes of infected people.

  3. Measles cases have reduced drastically worldwide, and 2019 reported the lowest number of cases in10 years.

Which of the above statements is/are correct?

Solution:
  • Measles is a highly contagious, serious disease caused by a virus.

  • Measles is an airborne disease which spreads easily from one person to the next through the coughs and sneezes of infected people.

  • India was among six countries with the highest number of infants who had not received the vaccine against measles — while the contagious viral disease surged worldwide in 2019 reaching the highest number of

  • reported cases in 23 years — last year, according to a new report of the World Health Organisation and US Centers for Disease Control and Prevention.

QUESTION: 10

Consider the following statements.

  1. The creation of antibodies against disease-causing virus guarantees immunity against a future attack from the same virus.

  2. Serosurveys for the prevalence of novel coronavirus tests the presence of antibodies that are developed after an infection.

Which of the above statements is/are correct?

Solution:
  • It is sometimes thought that everyone infected with a disease-causing virus, and recovers, becomes immune to the disease because they build antibodies against it. But that is not the case. While the creation of antibodies is necessary for the recovery process, it does not guarantee immunity against a future attack from the same virus. Immunity comes from what are known as "neutralising" or "protective" antibodies.

  • The neutralising antibodies become special because they have the ability to thwart the entry of the same virus inside human bodies in the future.

  • Serosurveys only look for the presence of antibodies in people. Their purpose is to determine whether a person has been infected with the virus or not, and through random testing of people, estimate the extent of spread of the disease, or prevalence, in a population group.

QUESTION: 11

Reverse Osmosis Systems can remove

  1. Metal ions

  2. Aqueous salts

  3. Bacteria

  4. Lead

Select the correct answer code:

Solution: Reverse osmosis can remove many types of dissolved and suspended chemical species and biological ones (principally bacteria) from water.

Reverse Osmosis Systems will remove common chemical contaminants (metal ions, aqueous salts), including sodium, chloride, copper, chromium, and lead; may reduce arsenic, fluoride, radium, sulfate, calcium, magnesium, potassium, nitrate, and phosphorous.

QUESTION: 12

Consider the following statements.

  1. The storage temperature for vaccines can vary, even if they are developed using the same technology. 

  2. Polio Vaccine used in India's immunisation programme is stored in room temperature.

  3. mRNA vaccine can be developed that can be stored at warmer temperatures.

Which of the above statements is/are correct?

Solution: The storage of a vaccine depends on the temperature they need to be kept at for their potency to remain intact. This varies from vaccine to vaccine, including those developed using the same technology, because of companies' different approaches in the formulation of the product.

Polio vaccines used in India’s immunisation programme are stored at -20°C

QUESTION: 13

Consider the following statements regarding Guillain Barre Syndrome.

  1. Guillain Barre Syndrome is a rare autoimmune disorder.

  2. It is caused by bacteria or viral infection.

  3. There are no reported cases of patients infected with Covid-19 showing the symptoms of Guillain Barre Syndrome.

Which of the above statements is/are correct?

Solution:

In a rare complication, some patients infected with Covid-19 have been found suffering from Guillain Barre Syndrome (GBS). In India, such cases have been reported since August.

What is Guillain Barre Syndrome?

It is a very rare autoimmune disorder. In an attempt to kill the coronavirus, the immune system accidentally starts attacking the peripheral nervous system. GBS is caused by bacteria or viral infection. In the past, Middle East Respiratory Syndrome patients showed GBS symptoms, as did those infected with Zika, HIV, Herpes virus and Campylobacter jejuni.

 

 

QUESTION: 14

Consider the following statements regarding Brain fingerprinting.

  1. Brain fingerprinting is a method of interrogation in which the accused's participation in the crime is investigated by studying their brain's response.

  2. It is conducted to study the electrical behaviour of the human brain.

  3. Supreme Court has ruled that brain mapping tests cannot be forced upon any individual without their consent, and the test results cannot be admitted solely as evidence.

Which of the above statements is/are correct?

Solution:
  • Brain Electrical Oscillation Signature Profiling (BEOSP), also known as brain fingerprinting, is a neuropsychological interrogation method. The accused's participation in the crime is investigated by studying their brain's response. The BEOSP test is carried out via a process known as an electroencephalogram, conducted to study the human brain's electrical behaviour.

  • The BEOSP procedure does not involve a question-answer session with the accused and is a neuropsychological study of their brain.

  • In 2010, the Supreme Court passed a judgment in the Selvi versus State of Karnataka case where the bench observed that narco analysis, polygraph and brain mapping tests could not be forced upon any individual without their consent test results cannot be admitted solely as evidence. However, any information or material discovered during the tests can be made part of the evidence, observed the bench.