Only believe in yourself and do the smart work.
tough
if
good
not
yeah it is sufficient for prelims if ur basics are clear n u have gud IQ....
because
If u will say by today instead of tomorrow then it was be sufficient...
yes
If u have good academics record thn only
yes
yes, but study atleast 12 hours per day, daily newspaper and 2 mock tests.
nope
go through previous year questions upto 4 years back , and find the types of questions u r capable of solving ,, set ur target to score 12+ in every section .. and dont ever try ur luck in exams that will make u score 0 .
yes
not sufficient
no