1. Answer in one word
1. Give any one example for insulator,
2. Which acid is injected into our skin when an ant bites?
3. State two examples of physical changes.
4. What kind of change is rusting?
5. What is the use of speedometer?
6. State the formula of an average speed of an object
7. Name the effects of electric current
8. What is a battery?
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Answer:
wood
formic acid
breaking glass,cutting paper
chemical , irreversible ,slow change
to calculate speed
speed=distance/time
electric current rise heat and light
two or more cells are called battery
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