The reaction of $HNO_2$ with $A$ gives a quaternary ammonium salt. $A$ is

Identify the major product of the following Hofmann elimination reaction: $[\text{cyclohexyl-}N^{+}(CH_3)(CH_2CH_3)(n\text{-Bu})]OH^{-} \xrightarrow{\Delta} \text{Major product}$

Among the following,the strongest base is

In carbyl amine reaction,the electrophile is:

Which of the options correctly represents the basicity order for these compounds?

The major product of the reaction is: