Dear aspirant,

for engineering the required subject are physics chemistry and mathematics and biology does not play a role in your admission directly except for your overall percentage. So if you have below 50% in PCM then you might not be able to get information technology branch in almost all the engineering colleges as most of them have the minimum requirement set at 60%. However you can apply for improvement exam in all your subjects and try to score a better percent to be eligible for admission in engineering.

More details about improvement can be found on the link below:

https://www.google.com/amp/s/www.careers360.com/question-12th-cbse-improvement-exam-2020-details-and-changes/amp

You can also check out more details at the official website of CBSE.

Thanks.