NCERT Chemistry Marathon (Organic Chemistry and D & F Block Elements)

Presented by: Shara Grover

Key Points:

1. Focus on Main Objectives

   • Cover theory, concepts, and practice questions within the limited time.
   • Concentrate on Organic Chemistry and D & F Block Elements.

2. Time-saving and Effective Techniques

   • Send a laughing emoji if something is unclear and a thumbs-up emoji if understood.
   • Focus on important topics and avoid additional things.
   • Take short breaks after each chapter.

3. Motivational Poem:

   • Everything is possible with hard work. Those who get scared will waste their effort.

Covered Topics:

Organic Chemistry:

Haloalkanes and Haloarenes:

• Important Topics: SN Reactions (SN1, SN2), Elimination Reactions, Grignard Reagents.
• Key Reactions: Preparation, chemical properties, and their mechanisms.
• Classification: Mono, Di, and Tri alkyl halides.
• Primary, Secondary, Tertiary alkyl halides

D and F Block Elements:

• Not covered in today's lecture, only planned.

Important Topics in Haloalkanes and Haloarenes

• SN Reactions: Complete details and key reactions.
• Lucas Reagent: For distinction test.
• Preparation Methods: Preparation of haloalkanes from alcohols, uses, and chemical properties.
• Important Reactions:
  • Diazonium Salt Formation
  • Finkelstein and Swarts Reactions
• Physical and Chemical Properties: Order of melting and boiling points.
• Insolubility in Water: Due to lack of energy.

Chemical Properties in Haloarenes

• No Nucleophilic Substitution: Reasons explained.
• Key Reactions: Electrophilic substitution, sulfonation, Friedel-Crafts alkylation.

Question Repetition and Possibilities

• Repeated Questions: Use of Grignard reagent, SN2 reactions, dehydrohalogenation.
• Expected Questions: Finkelstein and Swarts reactions, why nucleophilic substitution does not occur.

The detailed notes should be useful for review, understanding theory, processes, and preparing practice questions.