Write A if the situation states a change that needs oxygen and B if it does not need oxygen to change.
1. Cutting of paper
2. Apple flesh changing color
3. Digestion of food
4. Making dresses
5. Iron turning yellowish brown
6.Rusting metal chain
7. Breaking of sticks into pieces
8. Hammering gold
9. Spoilage of food
10. Stretching rubber band
1. Cutting of paper
2. Apple flesh changing color
3. Digestion of food
4. Making dresses
5. Iron turning yellowish brown
6.Rusting metal chain
7. Breaking of sticks into pieces
8. Hammering gold
9. Spoilage of food
10. Stretching rubber band
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Answer:
1.B
2.A
3.A
4.B
5.A
6.A
7.B
8.B
9.A
10.B