Hello aspirant,
As you are PCMB student, don't get worry! You don't have to give seperate exam for PCM and PCB.
Maths and Biology are the subjects of science Stream which are to be given seperately. Like whenever you will get the schedule for exam, you will be provided the seperate dates for all your subjects. Some day you will give exam of physics then other day you will give exam for chemistry then again Maths and then Biology.
There is no rule that you have to give two times exam for Physics and Chemistry. Just seperate exams!
For more details check CBSE official site www.cbse.nic.in
Hello student ,
It depends upon the course for which your are going to give entrance exam, as you know different courses demands for different entrance exams to take admission so suppose if you want to give beet exam then you can go for it as it requires pcb as main subject and if you want to go for jee exams then you can go for this also as it demands only pcm as main subject in your 10+2 .
Hope it helps , in case of query ask your query again !
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