i give the 12th cbse exams in 2014 march/april but i got compartment in physics i applied for compartment exam in july(first chance) and again i failed in exam then i again applied for second chance in march/april 2015 (as a private candidate) and again i failed in the exam.

it will be great if you help me in this

1.when third compartment form available?
2.if i pass in third compartment exam then i can appear for march/april 2016 exams(regular) ?
3.when my cbse second compartment marksheet come to home (as a private candidate)