Which of the following method is used to separate aniline from water?

A solid substance is dissolved in water. Which one of the following methods is used to separate it?

Which of the following reagents is useful for separating aniline from a mixture of aniline and nitrobenzene?

Which of the following method is used to make pure water from a solution of salt in water?

Which of the following is used to separate oil from water?

Which one of the following methods can be used to separate anthracene from a mixture of salt and anthracene ?

Which of the following is used to prepare aniline from chlorobenzene by reaction with ammonia ?

Which of following methods is used to separate wolframite and stannic oxide present in cassiterite?