Child having 2 surnames, mother's and father's both

certainly yes, advised to keep your surname as you inherted from your parents

Who will rise dispute for this usually father's  side ancestral property and mother's self acquired property will be inherited by him.

Two surnames are not correct and your surname which came from your father shall be your child's surname.

There is no such rule to have only father's surname, if birth certificate having 2 surnames and also birth certificate mentions mother & father name too then why should it have issue? Any scenario?

It is legal if you want to make your child a subject of social mockery from school days till his death.

Thanks, Good atleast law is neutral. We cant help people for such social mockery. It is due to people like us who are narrow minded and create issues for such thing than minding own business. 

There is no law as to how a person ought to be named. Also,here is no requirement at all that a person should have a surname, whether father's or mother's. The parents have the option opt for any innovation in the surname.

After all what is in a name? Even if we call rose by another name, it will still smell sweet.

You can go ahead and crete problem for child righht from school admission to passport.