Question:medium

Identity the incorrect pair from the following:

Updated On: Jan 13, 2026
  • Photography - AgBr
  • Polythene preparation – TiCl4, Al(CH3)3
  • Haber process - Iron
  • Wacker process – Pt Cl2
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The Correct Option is D

Solution and Explanation

The objective is to pinpoint the inaccurate pairing concerning chemical reactions and their catalysts or compounds.

  1. Photography - AgBr: Silver bromide (AgBr) functions as a light-sensitive component in photographic materials, decomposing upon light exposure to create a latent image. This association is accurate.
  2. Polythene preparation – TiCl4, Al(CH3)3: The Ziegler-Natta catalyst, a combination of titanium tetrachloride (TiCl4) and trimethylaluminium (Al(CH3)3), facilitates the polymerization of ethylene into polyethylene (polythene). This pairing is correct.
  3. Haber process - Iron: Iron serves as the catalyst in the Haber process, which synthesizes ammonia. This pair is correctly identified.
  4. Wacker process – Pt Cl2: The Wacker process oxidizes ethylene to acetaldehyde. The appropriate catalyst is palladium(II) chloride (PdCl2), not platinum chloride (PtCl2). Consequently, this pairing is erroneous.

The incorrect pairing identified is Wacker process – Pt Cl2.

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