Q65: Given below are two statements: Statement (I): Potassium sulphate, a... - Food & Milk Chemistry, Quality Testing and Adulteration Detection - ICAR AIEEA PG Dairy Science 14 July 2023 Shift-1 Paper | Agrigyan

In the Kjeldahl method for nitrogen and protein estimation:

• Statement (I) is false: Potassium sulfate ($K_2SO_4$) is added to elevate the boiling point of concentrated sulfuric acid from $338^\circ\text{C}$ to around $370\text{ to }380^\circ\text{C}$, which speeds up oxidation and digestion. It raises the boiling point/temperature, rather than reducing it.
• Statement (II) is true: Copper sulfate ($CuSO_4$) acts as an inorganic catalyst to accelerate the oxidative digestion of organic matter into ammonium sulfate.
  
  Option analysis:
• Both Statement (I) and Statement (II) are true: Incorrect.
• Both Statement (I) and Statement (II) are false: Incorrect.
• Statement (I) is true but Statement (II) is false: Incorrect.
• Statement (I) is false but Statement (II) is true: Correct.