Which one of the following is more readily hydrolysed by $S_{N}1$ 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 :

In the presence of light,chloroform is slowly oxidised by air to form:

The hybridization state of carbon atoms in the product formed by the reaction of ethyl chloride with aqueous potassium hydroxide is

Which of the following compounds gives the same $S_N1$ and $S_N2$ product?

Arrange the following in their correct order of reactivity towards ${S_N}^1$ reaction.