Verified Solution • 2025–26 Session moderate

QJEEM19Ch2927: JEE Main 2019 Chemistry - Class 12 JEEM19Ch2927 Solution: The major product obtained in the following reaction is :

The major product obtained in the following reaction is :

JEE Main 2019 (Online) 11th January Evening Slot Chemistry - Aldehydes, Ketones and Carboxylic Acids Question 190 English

Multiple Choice Options

  • A https://ik.imagekit.io/novatra/photos/9070082a6ea952cf23db83b445c430bb324ef05fd6df88d64cfbc3b33607fbb3.webp
  • B https://ik.imagekit.io/novatra/photos/f8aecc53becdbea6804211ba948105b616032e96ac83014a9e17f4d24cc6afb5.webp
  • C https://ik.imagekit.io/novatra/photos/7a61ae9b134ba747f397869b16f259b758fb183c25bef12256980aadc2ea1d35.webp
  • D https://ik.imagekit.io/novatra/photos/6575239034a629cb8e5f299341913f4d36755d1478d0f96375ade3e3318d648a.webp

Step-by-Step Verified Solution

JEE Main 2019 (Online) 11th January Evening Slot Chemistry - Aldehydes, Ketones and Carboxylic Acids Question 190 English Explanation

In LiAlH4, H- is the attacking species which is a strong nucleophile and performs both nucleophilc substitution and nucleophilic addition reaction. In C = C, pi bond is created by pure p orbital with side by side overlapping which create π cloud and π cloud creates negative charge around it. As H- is also negative charged so LiAlH4 can't reduce C = C.

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