Chemistry

Classification of Elements and Periodicity in Properties

Appeared 127 times across 20 years of JEE Main papers — about 6.3 questions a year. Every one of them is below, with a full worked solution.

Questions per year

2’02

4’03

3’04

2’05

2’06

2’09

1’10

2’11

1’12

2’13

1’15

1’16

3’17

2’18

12’19

16’20

19’21

15’22

13’23

24’24

Questions

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We have the frequency data for Classification of Elements and Periodicity in Properties but haven’t run its papers through the pipeline yet. The 127 questions above are counted from official answer keys; the worked solutions follow once each one clears verification.