JEE Main 8 Repeated Reagents 2025 For Session 2 Exam Day: In JEE Main 2025, Chemistry is extremely important. Organic Chemistry is more likely to test students on significant reagents and their reactions. Some reagents simply keep appearing on previous tests and thus are vital to a quick review. Knowledge of their reactions, how they work, and any exceptions will assist students in answering tough questions. 8 reagents keep coming up quite a lot, which are Grignard reagent, KMnO₄, NaBH₄, LAH, NBS, DIBAL-H, Alcoholic KOH, and Tollens' test, along with their major changes. Learning about these reagents thoroughly will assist students in improving their accuracy and scores overall in JEE Main.
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JEE Main 8 Repeated Reagents 2025 For Session 2 Exam Day
The following table represents the most frequently tested reagents and their significant reactions in JEE Main. The aspirants must note these changes and understand how they operate to answer the questions effectively.
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Reagent
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Key Reactions
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Grignard Reagent (RMgX)
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- Reaction with Epoxides
- Reaction with Aldehydes and Ketones
- Reaction with Esters
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Tollens’ Test & Fehling’s Solution
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- Tollens' Test (AgNO₃ + NH₃)
- Fehling’s Solution (Cu²⁺ in basic medium)
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Clemmensen Reduction (Zn-Hg/HCl)
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NaBH₄ and LAH
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DIBAL-H (Diisobutylaluminium Hydride)
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KMnO₄ (Potassium Permanganate)
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NBS (N-Bromosuccinimide) – Allylic Bromination
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Alcoholic KOH
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