Hi Gautham,
Till now, nobody can say that CBSE will give grace marks to students or not.
Last year, the question paper was really very tough so, some grace or bonus marks were given but nobody knows how much marks were given.
Therefore, it is next to impossible to tell the quantity of marks that will be given to students this year.
Usually, if the paper comes harder than expected then CBSE adds some grace marks to all the students who gave that particular exam at that particular time and whether it will be only for Delhi region or for all depends on the paper only.
Feel free to ask doubts in the Comment Section.
I hope this information helps you.
Good Luck!
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