Hey Maninder,

There are various courses to do after 12th but the most important factor us your field of interest. As you said you have dropped your study for some reason from 2017 to 2019 I.e. a drop of 2 year....so let me tell you that this will not affect in your study further but you have to produce a gap certificate during the admission time.

Now I am providing the list of career options you can take as your path.

Defence entrance exams

A. Indian Maritime University Common Entrance Test

You can get Admission in Diploma in Nautical Science (DNS) leading to BSc. (Nautical Science)

Eligibility - you should have Class 12 (PCM)

Application mode - Online

Source: www.imu.edu.in/index.php

B. Indian Navy B.Tech Entry Scheme

You can get Admission in Indian Navy B.Tech course

Eligibility - you should have Class 12 passed

Application mode - Online

Source: https://www.joinindiannavy.gov.in/

C. Indian Navy Sailors Recruitment

You can take Admission in 24 weeks Basic training at INS Chilka followed by Professional training

Eligibility -you should have passed your Class 12 (Maths and Physics/Chem./Bio/Computer Sc.)

Application mode - Online, By Post

Source: https://www.joinindiannavy.gov.in/

Defence

D. Indian Army Technical Entry Scheme (TES)

You can get Technical Entry to Army

Eligibility-Class 12 PCM

Apply-Online

Source: www.joinindianarmy.nic.in/

E. National Defence Academy and Naval Academy Examination (I)

You will get Admission to Army and Air Force wings of NDA and 4 years B. Tech course for the Indian Naval Academy Course (INAC)

Eligibility- Class 12, 12 Passed

Application mode - Online

Source: www.upsc.gov.in/

Other career options are

1.Medical line
Basically, in this course, you need biology the most and there is no requirement of mathematics. You have to qualify the NEET exam to build your career in this line. In NEET, there are mainly 3 sections including biology physics and chemistry. You will get 45 qns from physics and 45 qns from chemistry whereas you will get 90 qns from biology which will include both botany and zoology. However, the total time period will be 3 hours. And also you can get admission through the entrance examination known as AIIMS.
2.Engineering line
In this career path mathematics is the most important one. You have to qualify the JEE MAINS exam to study in this path. However, there are some other private college entrance exams through which you can get admission. In this exam, you will have to face qns from mathematics physics and chemistry.
3.BSc line
In this type, you will get admission on the basis of your 12th result and merit list provided by the colleges you have applied. Here there is no limitation in what you have as your subject in 12th. You will get admission according to your wish. There are many streams like mathematics, physics, chemistry, botany, zoology, microbiology etc.
4.Research line
In this path, you can have either both or any one or mandatory both that depend upon the entrance exam you are giving. There are certain entrance exams such as KVPY, NEST where you have to face the qns from both math and biology along with physics and chemistry but you have to answer either in any 3 in NEST but in KVPY you have attend all of them.

So here are all the possible paths you can take after your 12th.

If you need more help then feel free to ask.

Thank you

Hello aspirant....

If you have English subjects also in class 12th then medical line is the best and you should also prefer this .You can apply for The medical entrance test NEET and can do MBBS ,BDS,BAMS,B.pharma etc.You can also think for agriculture.You can give AIIMS also.You should the official website of Neet and read eligiblity criteria.But now registration and form filling is closed very earlier.You should also think over state level exam .

Hope you get it.