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Periodic table and trends – 2019 -17 Checkpoint Sec 1 Chemistry
1. May/2022/Paper_1/No.2
1
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2. May/2022/Paper_2/No.15
2
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3. Nov/2021/Paper_2/No.8
3
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4. May/2021/Paper_1/No.5
4
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5. Nov/2020/Paper_2/No.14
5
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6. May/2019/Paper_2/No.9
6
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7. May/2018/Paper_2/No.8
7
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8. May/2017/Paper_1/No.10
8
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9. May/2017/Paper_2/No.7
9