Current Question

Science & Technology :

Cryptocurrency

Consider the following statements with respect to Cryptocurrency:

  1. It is a form of digital cash that uses encryption technology to make it secure.
  2. People can store their cryptocurrency stashes in virtual wallets.
  3. Cryptocurrency is powered by a technology called blockchain, which functions like an open ledger that gets updated in real time.
  4. Cryptocurrency is secure and non-anonymous.

Select the correct answer using the code given below:


Global Clusters

Which of the following can best describe global clusters?


Solar Tsunami

Consider the following statements with respect to Solar Tsunami:

  1. The Sun’s magnetic field, from which sunspots gets generated, wraps around the sun in the east-west direction.
  2. At the end of a solar cycle, magnetic dam can break, releasing huge amounts of plasma cascading like a tsunami towards the equator.
  3. The tsunami waves travel at high speeds of about 1,000 km per hour carrying excess plasma to the upper-latitudes.

Select the correct answer using the codes given below:


Dark Matter

Which of the following statements are correct with respect to Dark Matter?

  1. Dark Matter emits no light and cannot be seen directly
  2. Dark Matters are stars or planets.
  3. Astronomers do not detect gamma rays produced by them.
  4. Dark matter is black hole.

Select the correct answer using the codes given below:


Agent Orange

Consider the following statements vis-à-vis ‘Agent Orange’:

  1. It is a herbicide that kills the invasive shrubs which compete with the growth of orange tree.
  2. The active ingredient of Agent Orange is a combination of 2,4-dichlorophenoxyacetic acid and 2,4,5-Trichlorophenoxyacetic acid.

Choose the correct answer from the code given below:


Bacteria

Consider the following statement:

  1. Bacteria having NDM1 Genes are usually Superbugs.
  2. Antibiotics taken in unreasonable or partial dose is the cause of antimicrobial resistance.

Choose the correct answer from the code given below:


Solar Cells

Consider the following statements about Solar Cells:

  1. Maximum theoretical efficiency of solar cells is around 98%.
  2. Perovskite layer solar cells have efficiency close to 75%.
  3. Inkjet printing procedure of perovskite solar cells have lowered the production cost.

Choose the correct answer from the code given below:


China’s ASAT System

Consider the following statements:

  1. In 2007, China destroyed an ageing satellite through ASAT missiles which was placed in geosynchronous orbit.
  2. China’s ASAT system has the greatest range among all the nations having this ASAT system in place.

Choose the correct answer from the code given below:


Satellite Orbits

Consider the following statements:

  1. Most man-made satellites are placed in this orbit.
  2. International Space Station (ISS) is present in this zone only.

These references are with respect to?


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