32. Name the various modes of nutrition. [1]
33. What is the nutrition in autotrophic plants? [1]
34. What is meant by the white fleece of the lamb? [1]
35. What is the range of a laboratory thermometer? [1]
36. Complete the following word equation :Zinc + Hydrochloric acid → ______ + _______ [1]
37. Define crystallisation? [1]
38. What kind of changes involve the change in physical properties only? [1]
39. Which type of a change involves energy changes? [1]
40. What are acids? How are they produced? [2]
41. Why is calamine solution is applied on the skin when an ant bites? [2]
42. How do we prevent rusting?
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Answer:
42. by putting cocunut oil
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