i have a back in previous semester and i want admission in msc but the back paper is very delayed and i dont want to waste my year
Without clearing all of your papers, you can't take admission in MSc course. Now every universities informs some specific dates for the requirement of original marksheet. Now if your supplementary paper gets cleared before that date, then you can take admission in the MSc course. But if its not cleared, then sorry to say, you have to lose a year, there is no other options available.
Wish you a great day!