October 2018 1 99 Report
Manakah larutan berikut yg dapat membuat paku berkarat?
1. larutan garam (dalam gelas terbuka)
2. larutan garam (dalam gelas tertutup)
3. larutan aki (dalam gelas terbuka)
4. larutan aki (dalam gelas tertutup)
5. minyak goreng (dalam gelas terbuka)
6. minyak goreng (dalam gelas tertutup)
7. air mineral (dalam gelas terbuka)
8. air mineral (dalam gelas tertutup)
9. tanpa larutan (dalam gelas terbuka)
10. tanpa larutan (dalam gelas tertutup)

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