II. Answer the following questions in one or two sentences
1. What is conduction?
5 X 2 = 10
2. What are indicators?
3. How would you show that setting of curd is a chemical change?
4. Draw a simple circuit diagram and mark the essential components.
5. The distance between two stations is 240 km. A train takes 4 hours to cover this distance.
Calculate the speed of the train.
III. Answer in detail
4 X 3 = 12
1. Draw clinical laboratory thermometer diagram and label the parts.
2. How will you differentiate the physical changes from the chemical changes?
3. State difference between acids and bases.
4. Write a short notes about heating effect of electric current.
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Answer:
conduction is process in which heat is transferred from one end to another though metal
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