[ Official ] How was the Prelims 2021 paper?

I am getting 94-102 from different keys.. my 4th attempt and no mains given till now.. do i stand any chance ??

Getting 89 after considering all doubtfull wrong..

1. Mitochondria c

2. virus d

3. copper smelting d

4. Magnetite d

5. state b

6. cooker 1 and 3

7. Article 32

8. Casual worker 2 and 3

how many can be correct ?? And what are my chan