Answer:
•Teaching is a process where a teacher is trying to convey some facts to her/his student. So it's really important to ask questions to make sure if her/his student get what she/he meant
•It helps students to think out loud.
Through asking questions, Students get to know many things they don't know.
•It motivates students and develops interest on the topic. Once students get stuck in one question, they will try to understand more about it.
•Clarifying students doubts.
By asking questions,teacher help her/his students to clarify thier doubts. i.e, when a teacher ask a student one question and he don't know the answer,it means he have doubts in that topic. Understanding it, teacher will clear his doubt.
•It engages each student towards the learning.
If a student know that the teacher will be asking questions in between,he will be listening to class carefully, so that he can answer the question. This will not only help him to answer but also to understand the concept.
*Hope this is Helpful :)