Choose correct statement about MARS?

MARS | MCQ | Correct Answer

Choose correct statement about MARS?

  1. Mars called the ‘Red Planet
  2. SHERLOC is the first instrument on Mars that can perform fine-scale mapping and analysis of organic molecules.
  3. No organic compound found on Mars

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Options

  1. Only 1
  2. Only 2,3
  3. All of above
  4. Only 1,2

 

Answer: d is correct

Statement 1, is correct

Mars, often referred to as the ‘Red Planet,’ has intrigued scientists and stargazers for centuries; Reasons

IRON OXIDE AND RUST

One of the primary reasons behind Mars’ reddish appearance is its surface composition, particularly the presence of iron oxide, also known as rust.

Iron on Mars has undergone a process of oxidation, much like how iron objects on Earth rust when exposed to oxygen and moisture. This process gives the Martian soil and rocks their distinctive red color.

THE THIN MARTIAN ATMOSPHERE

Mars has a thin atmosphere compared to Earth, primarily composed of carbon dioxide. This thin atmosphere scatters sunlight differently than our denser atmosphere. When sunlight penetrates Mars’ atmosphere, it undergoes a process known as Rayleigh scattering, causing shorter wavelengths of light (like blue and green) to scatter more and longer wavelengths (like red and orange) to dominate, thus giving the planet its reddish tint.

VOLCANIC ACTIVITY

Mars has experienced significant volcanic activity in its history. The volcanic rocks and minerals ejected during these eruptions can also contribute to the planet’s coloration.Some volcanic materials on Mars, when weathered and altered, can produce reddish hues.

 

DUST STORMS

Mars is infamous for its massive dust storms that can envelop the entire planet. These storms, filled with fine dust particles, can further enhance the reddish appearance of Mars when they scatter sunlight and suspend dust particles in the atmosphere. Mars is infamous for its massive dust storms that can envelop the entire planet. These storms, filled with fine dust particles, can further enhance the reddish appearance of Mars when they scatter sunlight and suspend dust particles in the atmosphere

Statement 2 is correct

The latest research through Perseverance Rover introduces a novel instrument, the Scanning Habitable Environments with Raman and Luminescence for Organics and Chemicals (SHERLOC) instrument, which helps locate basic chemical compounds on Mars.

  1. SHERLOC is the first instrument on Mars that can perform fine-scale mapping and analysis of organic molecules.
  2. It uses a laser to illuminate the surface of rocks and soils, and measures the fluorescence or glow emitted by organic compounds when exposed to ultraviolet light.
  3. SHERLOC can also identify the minerals associated with organic compounds, which can provide clues about their origin and preservation.
  4. Statement 3 is incorrect
  5. Mars Phoenix lander and the Curiosity rover had previously detected organic carbon on Mars using advanced techniques such as evolved gas analysis and gas chromatography-mass spectrometry.
  6. SHERLOC found basic organic compound.

 

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