Join the Most Relevant JEE Main 2025 Test Series & get 99+ percentile! Join Now
Search any question & find its solution
Question: Answered & Verified by Expert
CH 3 CH 2 COOH red P Cl 2 Α alc.KOH Β  
What is B ?
ChemistryCarboxylic Acid DerivativesJEE Main
Options:
  • A CH3CH2COCl
  • B CH3CH2CHO
  • C ClCH2CH2COOH
  • D CH2=CHCOOH
Solution:
2936 Upvotes Verified Answer
The correct answer is: CH2=CHCOOH
1st step is Hell-Volhard Zelinsky reaction, halogenation of carboxylic acid at α​ - C  

CH 3 CH 2 COOH red P - HCl Cl 2 CH 3 CHClCOOH - HCl alc. KOH CH2=CHCOOHAcrylic acid

Looking for more such questions to practice?

Download the MARKS App - The ultimate prep app for IIT JEE & NEET with chapter-wise PYQs, revision notes, formula sheets, custom tests & much more.