CBSE 12th

No, the results are valid only for a year.

It depends upon the cutoff which has not released since the result is not announced. The result will be coming on 30th April 2018. After this the cutoff for the different categories will be announced. Then if you do not attain the minimum score then you will not get any college but if you have qualified with above minimum marks then it might be possible that you will get the college.

No, only science background students can do engineering. You can do polytechnic Diploma.

Go and take admission in Thakur College of Engineering and Technology. Even their fees is high as compared to others but the facilities they provide are well and good.

JoSAA Eligibility -Criteria for JEE Advanced 2018
Candidates should have successfully qualified JEE Advanced 2018 examination. The candidates should have scored at least an aggregate of 75% marks in their 12th standard qualifying examination. SC/ ST/ PwD category candidates should have secured aggregate marks of 65%.

If you are from CBSE board then you must follow NCERT for board's exam. CBSE makes the exam on the basis of NCERT only. Must do the hard work solve the previous year question and concentrate to studies. Just focus on your studies only.

Hello,
Here is the eligibility criteria:
The eligibility for joining merchant navy is finishing class 12th with physics, chemistry and mathematics. Candidates have to be unmarried Indian citizens (male or female). Normal vision is required but glasses up to plus or minus 2.5 may be allowed.
Physical Requirements:-
1. Eye Sight = 6/6
2. Height = 167 cms
3. Weight = 50 Kg
4. Chest = 77 cm (Normal) / 82 cm (Expanding)

Students from PCM group can apply for IISER (Indian Institute of Science Education and Research) aptitude test. Most of the students who appear for this test will have PCM or PCB in class 12th. If you can answer three subjects confidently, you would have a great chance of ending up in IISER.

For CS and civil both have maths up to 3 semesters. But CS has more maths in the later semester as compared to civil. Don't fear from maths. Choose according to your choice. If you go for BBA there is much less maths than B.Tech.