1. The properties which are registered in your mother's name have, in the absence of a will or any other instrument of transition of property made by your deceased mother during her life time, devolved according to the law of succession. You, your siblings and your father have succeeded equally to the properties owned by your mother. Your father is one of the legal heirs to your deceased mother. He is not the only legal heir. You may cull out your share in your deceased mother's properties by filing for partition in the court. In addition thereto, you may also seek a stay order against the sale by your father of the properties owned by your mother. If your father creates third party rights it will be difficult for you succeed in the court.
2. As regards the properties registered in your father's name, he is at liberty to waste or burn them. You cannot restrain him from dealing with his properties in the manner he desires. If he dies without making a will you will succeed to his properties.
3. Coming to the amount given by you to your father, if you have documentary proof of the amount being given to him, you may recover the same from him by filing a lawsuit for recovery in the court. It is not clear from your query as to how much time has elapsed from the date on which you have him the amount. If more than 3 years have elapsed then curtains have drawn on your legal remedy to recover the amount from him.