JEE Main Paper II exam pattern 2020, marking scheme and tiebreaking policy can be checked below 
Name of the Subject

Total Number of Questions

Marks

Mathematics Part I

20 MCQ Based Question and Five Numerical Value Questions

100

Aptitude Test Part II

50

200

Drawing Test Part III

02

100

Total

77

400

Marking Scheme for JEE Main Paper II
Name of the Section

Marking Scheme

MCQBased Questions

Marks for Correct Answer

04

Negative Mark for Incorrect Answer

1

Negative Mark for Unaswered/ Marked for Review Questions

0

Numerical Value Questions

Marks for Correct Answer

04

Negative Mark for Incorrect Answer

0

Negative Mark for Unaswered/ Marked for Review Questions

0

Drawing Test Part III

Two Questions will be evaluated for 100 marks.



Tie Breaking Policy for JEE Main Paper II
If two or more candidates secure the same marks in JEE Main Paper II exam, the below rules or tiebreaking policy will be applied to determine the merit of candidates.
Tie Breaker 1: Candidates scoring higher marks in Mathematics in JEE Main Paper II will be given preference in the merit list as per tiebreaker policy 1.
Example:
Let us assume that Candidate A and Candidate B have scored 360 out of 400 marks in JEE Main. However, Candidate A scored 79 marks in Mathematics and Candidate B scored 81 marks. The preference in the order of merit will be given to Candidate B, as he scored higher marks in Mathematics than Candidate A.
Tie Breaker 2: This policy comes into effect when two or more candidates score the same marks in Mathematics. In such cases, candidates with higher marks in the Aptitude Test will be given higher preference in the merit list.
Example:
Let us assume that Candidate A and Candidate B have scored 350 out of 400 marks in JEE Main. However, Candidate A scored 140 marks in PaperII, while Candidate B scored 139 marks. In such cases, Candidate A will be given higher preference in the order of merit than Candidate B.
Tie Breaker 3: This policy comes into effect if two or more candidates score the same marks in Mathematics and Aptitude Test. In such cases, candidates with higher marks in Drawing Test will be given preference in the order of merit.
Example:
Let us assume that Candidate A and Candidate B have scored 350 out of 400 in JEE Main Paper II. On the other hand, these candidates have also scored the same marks in Mathematics and Aptitude Test. However, Candidate A scored 78 marks in Drawing Test and Candidate B scored 80 marks. In such cases, Candidate B will be the higher preference in the merit list, as he scored higher marks in Drawing Test than Candidate A.
Tie Breaker 4: This policy comes into effect if two or more candidates score the same marks in Mathematics, Aptitude Test and Drawing Test. In such cases, candidates with the less number of negative answers or incorrect answers in JEE Main PaperII exam will be given preference in the order of merit.
Example:
Let us assume that Candidate A and Candidate B have scored 250 marks in JEE Main Paper II. On the other hand, both these candidates scores same marks in Mathematics, Aptitude Test and Drawing Test. However, the number of wrong answers by Candidate A is 16, while the number of wrong answers by Candidate B is 18. In order to determine the merit, Candidate A will be given higher preference in the order of merit, as the number of wrong answers by Candidate A is less than Candidate B.
Tie Breaker 5: This policy comes into effect only if the tie still persists after applying all the above rules. In such cases, candidates older in age will be given higher preference in the merit list. Check the example below for a better understanding.
Example:
Let us assume that Candidate A and Candidate B scored 240 marks in JEE Main Paper II. On the other hand, these candidates scored same marks in Mathematics, Aptitude Test and Drawing Test. At the same time, the number of incorrect answers by these candidates is also the same. However, Candidate A is 17 years and 6 months old and Candidate B is 17 years and 8 months old. As per tiebreaker policy 5, Candidate B will be given higher preference in the merit list.