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Q.

State whether the following statements are true or false. In case a statement is false, write the corrected statement in your notebook. 

(a) Cutting a log of wood into pieces is a chemical change. [[1]]

(b) Formation of manure from leaves is a physical change. [[2]]

(c) Iron pipes coated with zinc do not get rusted easily. [[3]]

(d) Iron and rust are the same substances. [[4]]

(e) Condensation of steam is not a chemical change. [[5]]

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a

True (T),False (F)

answer is A, B.

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Detailed Solution

a) Ans: False.

A change in which one or more new substances are formed is called a chemical change or a chemical reaction. Cutting a log of wood into pieces doesn't produce any new products. Hence it is not a chemical change. 

 

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