CBSE 12th

Yes, according to your marks you can easily get admission in good college of DU. Kindly check the official website for regular updates.

No, 12th percentage is not required in MHTCET as 50% is mandatory to apply for the same as an eligibility criteria only. Also, to get admission in MHTCET only its score is important as it does not give weightage to the 12th score and to get admission in top colleges of Maharashtra like COEP, VJTI, etc., in top branches more than 170 would be required.

No, with 12 marks you will not get K.J.Somaiya but you will get other colleges .Best of luck for your future and if any query feel free to ask. Do upvote if you like answer.

The eligibility criteria for this college is 60% Marks in PCM and 50% in English in Xth and XIIth.

I guess 70% is good enough to GET admission in some good private engineering colleges. It would be a waste of time to give improvement in 12th and it's not even known that the aggregate would improve or not. If you give improvement, it would take another year, which is why it's better to try out some other engineering colleges.

Hi,
You can check which colleges you'll get on the Shiksha college predictor. Here it is:
https://www.google.com/url?sa=t&source=web&rct=j&url=https://www.shiksha.com/b-tech/resources/mhcet-college-predictor&ved=2ahUKEwj3nbn47rbbAhUgT48KHUtgAwsQFjABegQICRAB&usg=AOvVaw0uaoZM669iah758RuHjQe4

Yes, you can do B.Sc in computer science as the requirements are 10+2 with PCM and percentage should be greater than 60%.