09 Oct 2022: UPSC Exam Comprehensive News Analysis

Quote for the day Set 5 11

CNA 9 Oct 2022:- Download PDF Here

TABLE OF CONTENTS

A. GS 1 Related
GEOGRAPHY
1. Early warning for heatwaves sees huge improvement
B. GS 2 Related
POLITY
1. Election Symbols
C. GS 3 Related
INTERNAL SECURITY
1. Migrants from Bangladesh
SCIENCE AND TECHNOLOGY
1. Chandrayaan-2 gauges sodium content on Moon’s surface
D. GS 4 Related
E. Editorials
F. Prelims Facts
1. Parboiled Rice Exports
2. Kerch Strait
G. Tidbits
H. UPSC Prelims Practice Questions
I. UPSC Mains Practice Questions
FIP Magazine

Category: SCIENCE AND TECHNOLOGY

1. Chandrayaan-2 gauges sodium content on Moon’s surface

Syllabus: Awareness in the field of space.

Mains: Sodium element presence on the lunar surface.

Prelims: Chandrayaan 2 and CLASS instrument.

Details:

  • Scientists from the Indian Space Research Organisation (ISRO) used Chandrayaan-2 large area soft X-ray spectrometer (CLASS) instrument to map the distribution of sodium on the surface of the Moon. The CLASS instrument was deployed in Chandrayaan-2, the second Indian Moon mission.
  • This is the first effort to provide the measurement of sodium on the moon’s surface using X-ray fluorescent spectra. The results were published in the Astrophysical Journal.
  • X-ray fluorescence is usually used to study the composition of materials. It is a non-destructive approach.Β 
  • When the solar flares are ejected by the sun, a huge amount of X-ray radiation falls on the lunar surface thereby triggering X-ray fluorescence. The CLASS instrument computes the energy of the X-ray photons coming from the moon and estimates its total number. The energy of the photons helps in identifying the atom, for example, sodium atoms emit X-ray photons of 1.04 keV. The intensity is estimated by the number of atoms.
  • It is observed that the moon significantly lacks volatile elements like sodium, in contrast to the Earth.Β 
  • The scientists explain that the amount of volatiles can help in analyzing the test formation scenario of the Earth-moon system.

Recent Findings:

  • A recent study by Chandrayaan showed that there is a thin veneer of sodium atoms on the moon. These atoms are weakly bound to the surface of the moon. Moreover, these atoms are in addition to the minor quantities of sodium found in lunar rocks.
  • The sodium atoms that are bound on the surface get liberated when they receive enough energy from the solar wind ions and solar ultraviolet radiation.
  • Apart from potassium, sodium is the only element that can be observed in the lunar exosphere using telescopes. This new map of sodium would further leverage the understanding of the surface-exosphere relationship.
  • Moreover, since the solar cycle is in its ascending phase, more solar flares are expected. This would ensure greater coverage of all elements on the lunar surface by CLASS at the highest spatial resolution.

Related Link: Chandrayaan 3 | Chandrayaan Mission 2022 [UPSC Notes]

Nut Graf:Β  The estimate of sodium can be used to trace the volatile history of the moon. The Chandrayaan-2 large area soft X-ray spectrometer instrument thus proves to be a great potential technology for understanding the lunar surface and atmosphere.

2. Kerch Strait

Prelims: Map based questions

Context: A powerful explosion damaged Russia’s road-and-rail bridge to Crimea recently.

Key Details:

  • The explosion caused the partial collapse of a bridge linking the Crimean Peninsula with RussiaΒ  damaging a key supply route for Russia’s war effort in southern Ukraine.Β 
  • The 19-kilometre bridge across the Kerch Strait linking the Black Sea and the Sea of Azov opened in 2018 and is the longest in Europe.Β 
  • The $3.6 billion project is a tangible symbol of Moscow’s claims on Crimea and has provided an essential link to the peninsula, which Russia annexed from Ukraine in 2014.
Kerch

Image Source: BBC

G. Tidbits

Nothing here for today!!!

H. UPSC Prelims Practice Questions

Q1. The Kerch Strait connects which two water bodies? (Level-Difficult)
  1. Adriatic Sea with the Ionian Sea
  2. Azov sea to the Black sea
  3. Gulf of Mexico and the Caribbean Sea
  4. Black Sea with the Sea of Marmara
CHECK ANSWERS:-

Answer: b

Explanation:Β 

  • The Kerch Strait is the only connection between the Black Sea and the Sea of Azov, and the only way to reach two important Ukrainian ports, Mariupol and Berdiansk.
  • It separates the Kerch Peninsula of Crimea from the Taman Peninsula of Russia’s Krasnodar Krai.Β 
Q2. Consider the following statements with respect to Van Gujjars:(Level-Difficult)
  1. They are buffalo-herders inhabiting the foothills of Himalayan states like Himachal Pradesh and Uttarakhand.
  2. They are a pastoral semi-nomadic community, practising transhumance.

Which of the statements given above is/are incorrect?

  1. 1 only
  2. 2 only
  3. Both
  4. None
CHECK ANSWERS:-

Answer: d

Explanation:

  • Van Gujjars are the forest-dwelling nomadic community inhabiting the foothills of Himalayan States such as Uttarakhand, Himachal Pradesh and Jammu and Kashmir.
    • They traditionally practice buffalo husbandry and transhumance.
Q3. With respect to Inflation, which of the following statements is/are correct? 
(Level-Difficult)
  1. The Reserve Bank of India (RBI) will set an inflation target based on the consumer price index (CPI) once every five years.
  2. Inflation reduces a currency’s purchasing power
  3. During periods of rising prices, debtors gain and creditors lose.

Options:

  1. 1 only
  2. 1 and 2 only
  3. 2 and 3 only
  4. 3 only
CHECK ANSWERS:-

Answer: c

Explanation:

  • Statement 01 is incorrect, The Flexible Inflation Target (FIT) was adopted in 2016. The Reserve Bank of India Act, 1934 was amended to provide a statutory basis for a FTI framework.
    • The amended Act provides for the inflation target to be set by the Government of India, in consultation with the RBI, once every five years.
  • Statement 02 is correct, Inflation reduces a currency’s purchasing power and what that currency can buy. Loss of purchasing power has the effect of an increase in prices.Β 
  • Statement 03 is correct, During periods of rising prices, debtors gain and creditors lose.Β 
    • When prices rise, the value of money falls. Though debtors return the same amount of money, they pay less in terms of goods and services. This is because the value of money is less than when they borrowed the money. Thus the burden of the debt is reduced and debtors gain.Β 
    • On the other hand, creditors lose. Although they get back the same amount of money which they lent, they receive less in real terms because the value of money falls. Thus inflation brings about a redistribution of real wealth in favour of debtors at the cost of creditors.
Q4. Which of the following statements with respect to Voter Verifiable Paper Audit 
Trail (VVPAT) is/are correct ? (Level-Medium)
  1. The voter slip is displayed to the voter for thirty seconds.
  2. The machines can be accessed, though, by the polling officials and not by the voter.

Options:

  1. 1 only
  2. 2 only
  3. Both
  4. None
CHECK ANSWERS:-

Answer: b

Explanation:

  • Statement 01 is incorrect,Β 
    • The VVPAT machineΒ  is placed in a transparent glass case and prints a slip containing the name of the candidate and the corresponding election symbol allowing the voter to see the vote. The voter slip is then displayed to the voter for about seven seconds and automatically drops it in a sealed box.
  • Statement 02 is correct,Β 
    • An EVM is designed with two units: the control unit and the balloting unit.Β 
    • These units are joined together by a cable. The control unit of the EVM is kept with the presiding officer or the polling officer. The balloting unit is kept within the voting compartment for electors to cast their votes.
    • Therefore the machines can be accessed by the polling officials and not by the voter.
Q5. Which one of the following statements best describes the role of B cells and 
T cells in the human body? (Level-Medium) (CSE-PYQ-2022)
  1. They protect the body from environmental allergens
  2. They alleviate the body’s pain and inflammation.
  3. They act as immunosuppressants in the body.
  4. They protect the body from diseases caused by pathogens.
CHECK ANSWERS:-

Answer: d

Explanation:

  • B cells and T cells are the white blood cells of the immune system that are responsible for adaptive immune response in an organism. Both the cells are made in the bone marrow. B cells mature in the bone marrow while the T cells travel to the thymus and mature there. These cells are structurally similar and are involved in adaptive immune response in an organism.

CNA 9 Oct 2022:- Download PDF Here

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