Hello!

As far as Delhi University is concerned, your board doesn't matter but your percentage does. This too depends on the percentage requirement for each course. For BA degree you need to have 40%, for BA(Hons) it's 45%. This is the same case for B.Voc and B.com, and for B.com(Hons.) respectively. But, In the case of B.Sc Hons, you need to have 55% and specific subject requirements. Though you seem to satisfy all the criteria, you as need to take into account the competition and need to know that just satisfying the entry requirements doesn't assure a place. To know your chances, check out this link: https://university.careers360.com/articles/du-cutoff

All the best!

Eligibility criteria for DU is to pass class 12. No matters whether you have passed from any state board, CBSE, ISC board or Open schooling board. 70 per cent is good marks but cut off of DU is very high. 

Below is the link given for DU cut off. 

https://university.careers360.com/articles/du-cutoff. If you have any further doubts ask in comments.