MCQ
Which of the following reactions represent the continuous etherification process?
- A$R - ONa + R ^{\prime}- X \rightarrow$
- ✓$R - OH \xrightarrow{ H _2 SO _4}$
- C$R - OH + CH _2 N _2 \xrightarrow{ HBF _4}$
- D$R - O - R ^{\prime} \xrightarrow{\text { aq. } H _2 SO _4}$