if the deed prescribes the description of the property correctly in the deed and the mother is owner of same then it can be considered as the valid even if the direction in the schedule is mentioned wrong, if the survey block number are mentioned correctly.
1. and 2. For this the recitals of the deed has to be seen as of it is made contradicting. if recitals all the property is given in that case land is also given.
3. No if the property is descried in the deed properly and intention and the property can be verified, further waqf deed it is for trust inalienable right therefore will not give you all the rights.