Current Affairs Questions

Science & Technology:

The Solar X-ray Monitor (XSM)

Consider the following statements:

  1. The Sun’s outer atmosphere is known as corona.
  2. The temperature of the photosphere – the visible surface of the Sun – exceeds one million Kelvin.
  3. The Solar X-ray Monitor (XSM) on board Chandrayaan-2 provides spectral measurement of soft X-ray spectrum of the Sun.

Which of the above statements is/are true?


PASIPHAE

Consider the following statements:

  1. Polar-Areas Stellar-Imaging in Polarisation High-Accuracy Experiment (PASIPHAE) has the objective of studying the polarisation in the light coming from millions of stars.
  2. The name PASIPHAE is inspired from Pasiphae, the daughter of Greek Sun God Helios.
  3. The Skinakas Observatory is located in Italy.

Which of the above statements is/are true?


Launched Akash-NG

Consider the following statements:

  1. The recently launched Akash-NG is a surface-to-surface missile.
  2. The Akash-NG missile system has been developed by Defence Research & Development Laboratory (DRDL), Hyderabad.
  3. Production agencies of Akash-NG include Bharat Electronics Limited (BEL) and Bharat Dynamics Limited (BDL).

Which of the above statement(s) is/are true?


A New Study On The Structure Of Mercury

Consider the following statements:

  1. A new study on the structure of Mercury has revealed that the planet has a big-sized core relative to its mantle.
  2. Mercury is the hottest planet in our solar system.
  3. When the planets began to form from clumps of that dust and gas, planets closer to the Sun incorporated more iron into their cores.

Which of the above statement(s) is/are true?


Multipurpose Laboratory Module

Consider the following statements:

  1. Recently, Russia’s Multipurpose Laboratory Module (MLM), Nauka, successfully docked with the International Space Station (ISS).
  2. In 1998, Russia launched the first module of the International Space Station (ISS), Zarya.
  3. The ISS orbits the Earth at an average altitude of approximately 800 miles.

Which of the above statement(s) is/are true?


NASA’s

Consider the following statements:

  1. NASA’s Interior Exploration using Seismic Investigations, Geodesy and Heat Transport (InSight) Mission is a part of NASA’s Discovery Program (1992).
  2. The InSight spacecraft touched down on Venus at the end of 2018.
  3. One Martian year is equivalent to almost two Earth years.

Which of the above statement(s) is/are true?


Exoplanet

Consider the following statements:

  1. A moon-forming region around an exoplanet, PDS 70c, was recently discovered.
  2. The Atacama Large Millimetre/submillimetre Array (ALMA) observatory is located in Brazil.
  3. More than 4000 exoplanets have been discovered till date.

Which of the above statement(s) is/are true?


Mission Shakti

India’s Mission Shakti is related to which of the following tests?


Air Breathing Engines

Consider the following statements with reference to the Air Breathing engines:

  1. A ramjet is a form of air-breathing jet engine that uses the vehicle’s forward motion to compress incoming air for combustion without a rotating compressor.
  2. A scramjet engine is an improvement over the ramjet engine as it efficiently operates at hypersonic speeds and allows supersonic combustion.
  3. A dual mode ramjet (DMRJ) is a type of jet engine where a ramjet transforms into scramjet over Mach 4-8 range, which means it can efficiently operate both in subsonic and supersonic combustor modes.

Which of the statement(s) given above is/are correct? Choose the correct answer from the codes given below:


Meta Materials

Consider the following statements with reference to ‘Meta materials’:

  1. Meta materials are artificially crafted with unique internal microstructures that give them properties not found in nature.
  2. Meta materials derive their properties not from the properties of the base materials, but from their newly designed structures.

Which of the given statement/s is/are correct?


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