JEE Main

Your marks should be above 120.

Your marks is very low in JEE Mains. So, for getting this college, the chances is very low.

There are less chances to get this college in these marks. But for once, you should go through the counselling.

Hello Submit,
One gets three chances max after 12th to appear for JEE Mains. Hence even if you take a drop for two years it will not make much difference.

There is no such criteria for direct entry or any kind of reservation which can guarantee a fixed seat into the university. Still, there is some reservation for Alumnus quota as well as NRI's too.You can check in there.But for admission procedure, you have to go through AMUEEE (generally).

Please wait for the results and then check it. However, there is very less chance that you will qualify for JEE Advanced. Since the cut-off for obc generally goes to 50-60 marks in JEE Mains. But wait till the result is out and cut-off is not declared.

There are some chances for getting government colleges, you should try the Shiksha's JEE Mains College Predictor. The link is given below:
https://www.shiksha.com/b-tech/resources/jee-mains-college-predictor?utm_source=cconnect&utm_medium=CR_JEECP&utm_campaign=6540165

Your board marks are low. Getting CSE is difficult. But it depends on trend during admission.
Best of luck.

Yes, you have a very good chance. But it depends on the trend during the counselling process.
Best of luck.

Yes, your son can get a seat. But getting a seat in high demand courses like CSE and mechanical engineering is difficult.
Best of luck.