Questions


March 2021 1 31 Report
Activity 1
Complete the table. Write your answer in a piece of paper.
Chemicals
Advantages
Chlorine
1.
2.
3.
Disadvantages
1.
2.
3.
lodine
1.
2.
3.
It dimilt Nimi
Quaternary ammonium
compound
1.
2.​

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