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Who is painting the wall ?
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❑ ᴡʀɪᴛᴇ ᴛʜᴇ ᴄʜᴀʀᴀᴄᴛᴇʀɪsᴛɪᴄs ᴏғ ᴀ ᴄʜᴇᴍɪᴄᴀʟ ᴄʜᴀɴɢᴇ.
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VI. ANSWER THE FOLLOWING IN SHORT:
Answer any 5 questions in short 5 X 3 = 15
27. Swathi kept a laboratory thermometer in hot water for some time and took it out to read the
temperature. Ramani said it was a wrong way of measuring temperature. Do you agree with Ramani?
Explain your answer.
28. Boiling of water is a physical change; but boiling of egg is a chemical change. Why?
29. Photosynthesis is a chemical charge. Justify your answer.
30. Distinguish between the following pairs.
(i) Smooth ER and Rough ER. LEAD KINDLY LIGHT
(ii) Cell wall and cell membrane.
(iii) Chloroplast and mitochondria.
31. Write a short note on nucleus.
32. What are the main classifications of plants.
33. Write the levels of classification.
A person who paints walls is a painter. If you want to distinguish between this and an artist who paints pictures, you could call him a 'painter and decorator'