I made a slight error.
Use of protic solvent in claisen condenstion (c.c) -
In c.c we use a strong base such as EtONa and to break it into its ions we use a protic solvent such as EtOH. So that we can get EtO- ion which can act as a base and abstract the alpha hydrogen.
Now if we use aprotic solvent, then it wont break bonds but to a very very small amount it may break, toh jab it will break less amount toh strong base EtO- will also be produced in a very less amount therefore it would try to go to a place from which H+ can be detached easily and that is the more acidic hydrogen.
(Jo bhi H zyada acidic hoga voh jaldi nikal jaayega i.e it will have a tendency to get lost faster, thoda se bhi agr usse mil jaaye base toh it will try to get out )
@Viraam_Rao draw from this and you will get your answer