**Completion of Chemical Reactions with Missing Reagents or Products**The image illustrates a sequence of chemical reactions requiring the identification of missing reagents or major products. The reactions are presented in a flowchart format.1. **First Reaction Sequence (Top Pathway):** - **Starting Material:** A hydrocarbon chain with a branched alkene. - **First Arrow:** Leads to an empty box, indicating the need for a product or reagent. - **Second Reaction:** An intermediate box connects to a final large box, where the product or reagent is also missing.2. **Second Reaction Sequence (Bottom Pathway):** - **Starting Material:** A branched alcohol. - **Reduction Step:** Involves NaBH₄ (sodium borohydride) and H₂O. The arrow points upwards to the alcohol, implying conversion of a prior product to the alcohol. - **Intermediate Box:** Connects with an arrow leading to the left, showing another empty box, needing a chemical or reagent. - **Final Product Box:** The sequence ends with a large box depicting the final product, which is not shown.This flowchart requires students to apply knowledge of organic reactions to determine the reagents or major products for completion of each sequence.

Alkane is treated with Br2/hv it gives alkyl bromide via freeradical substitution Alkylbromide in presence of base like alc.KoH gives alkene Alkene again it is reacted with HBr inpresence of peroxide gives alkylbromide (antimorkovnikov's product) Now dehydrohalogantion with strong bulkier base like sodium tertiary butoxide gives less substituted alkene as major product Alkene upon ozonolysis gives carbonyl Compound If carbonyl is reduced with NaBH4 it gives an alcohol as major product