Among the following chloro-compounds,the one having the lowest dipole moment is:

$2-$bromopentane is heated with potassium ethoxide in ethanol. The major product obtained is

Identify $(B)$ and $(C)$ and how are $(A)$ and $(C)$ related?

Which of the following compounds is most reactive towards $S_N1$ reaction?

Which among the following is a feature of $S_N1$ mechanism?

Given below are two statements :
Statement $I$ : $S_N2$ reactions are 'stereospecific',indicating that they result in the formation of only one stereo-isomer as the product.
Statement $II$ : $S_N1$ reactions generally result in the formation of product as racemic mixtures.
In the light of the above statements,choose the correct answer from the options given below :