4) State whether the following statements as True or False
1) When a candle burns, both physical and chemical changes
take place-
2) A naerobic bacteria digest animal waste and produce biogas-
3) Ships suffer a lot of damage through they are painted-
4) Stretching of rubber band is not a physical change-
5) Melting of wax is a change where a solid change to liquid state. Give one more such examples change which you observe in your surrounding-
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Answer:
a) true (b) true c) false d) true e) false
Answer: