State whether the following statements are True or False. Class 7
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State whether the following statements are True or False. Class 7
Question 1.
State whether the following statements are True or False. In case a statement is False, write the correct statement. Class 7
(i) Melting of wax is necessary for burning a candle. . (True/False)
Answer:
True
(ii) Collecting water vapour by condensing involves a chemical change. (True/False)
Answer:
False : Collecting water vapour by condensing involves a physical change.
(iii) The process of converting leaves into compost is a chemical change. (True/False)
Answer:
True
(iv) Mixing baking soda with lemon juice is a chemical change. (True/False)
Answer:
True