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SSC CHSL 2023 PYQ — Question 119

SSC CHSL Tier II - 26 Jun 2023 - Shift 1 • General Awareness • Q119

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In the following passage, some words have been deleted. Read the passage carefully and select the most appropriate option to fill in each blank.

Astronomers have discovered 62 new moons orbiting the ringed planet Saturn. Though some of the moons had been (1)________ as early as 2019, it takes more than sighting an object close to a planet to (2) ________ it is a moon and not an asteroid making a brief close passage to that planet.

Performing a painstaking (3) ________ of matching objects detected on different nights over the course of 24 months, the team tracked 63 objects that they ended up confirming as moons. One of (4) ________ satellites was revealed back in 2021, with the remaining 62 moons gradually announced over the past few weeks.

A study conducted by scientists at the Bhabha Atomic Research Centre (BARC) in March 2023 found that certain areas in ______ are experiencing nearly three times more background radiation than previously assumed.

Show answer & explanation

Correct answer: C

Explanation

The correct answer is option 3 i.e. Kerela

  • A recent study conducted by scientists at the Bhabha Atomic Research Centre (BARC) found that certain areas in Kerala are experiencing nearly three times more background radiation than previously assumed.
  • The study is significant, as it sheds light on the natural radiation levels in India, which has important implications for the country’s nuclear energy plans.
  • The study conducted by BARC scientists measured radiation levels from nearly 100,000 locations across India.
  • The study found that the average natural background levels of gamma radiation in India were 94 nGy/hr.
  • However, in Kollam district, the levels were found to be 9,562 nGy/hr, which is about three times more than the assumed levels.
  • The higher radiation levels in Kollam, a district in Kerala, are attributed to the presence of monazite sands that are high in thorium, a natural radioactive element.
  • Thorium is a common radioactive element that is found in small amounts in soil, rocks, and water