The reaction $RCl + NaI \xrightarrow{\text{Acetone}} R-I + NaCl$ is known as:

Which of the following compounds is not a suitable solvent for a Grignard reaction?

Which of the following is most reactive toward $S_N2$ reaction?

Rank the following compounds in order of decreasing rate of solvolysis with aqueous ethanol (fastest $\to$ slowest):
$(1)$ $CH_2=C(CH_3)Br$
$(2)$ $1-bromo-1-methylcyclohexane$
$(3)$ $CH_3-CH(Br)-CH_2-CH(CH_3)_2$

The product $B$ formed in the following reaction sequence is:

Which among the following is most common in alkyl halides?