SSC GD 2025 PYQ — Question 28

SSC GD Const 2025 (English) - 17 Feb 2025 - Shift 2 • General Awareness • Q28

In 1828, Friedrich Wöhler published a paper describing the formation of urea by combining which acid and ammonium in vitro?

Show answer & explanation

Correct answer: B

Explanation

The correct answer is option 2 i.e. cyanic acid.

  • In 1828, Friedrich Wöhler published a paper describing the formation of urea by combining cyanic acid and ammonium in vitro.
  • These experiments demonstrated the first successful synthesis of an organic compound from two inorganic molecules.
  • This was a significant achievement in chemistry, proving that organic compounds could be created artificially rather than being solely of biological origin.
  • Wöhler’s synthesis of urea from inorganic compounds was a landmark in organic chemistry.
  • However, it is not the same as the natural process of urea synthesis in the mammalian liver.
  • The natural mechanism of urea synthesis was discovered in 1932 by Hans A. Krebs and Kurt Henseleit.
  • This process is called the ornithine cycle or urea cycle.
  • The urea cycle occurs only in living cells.
  • It depends on the compartmentalization of enzymatic reactions in both mitochondria and cytosol.