Which product is formed when an alkyl halide reacts with dialkyl copper lithium (Gilman reagent)?

Consider the following reaction,$CH_3-CH(D)-CH(CH_3)-CH_3 + \dot{Br} \to X + HBr$. Identify the structure of major product $X$.

The melting points of alkanes with an odd number of carbon atoms are ............... compared to those with an even number of carbon atoms in the chain.

Of the five isomeric hexanes,the isomer which can give two monochlorinated compounds is

The Wurtz reaction of methyl iodide gives a chemical compound $X$. Which of the following reactions also produces $X$ as a product?

The interaction that causes the most instability in the boat conformation of cyclohexane is .......