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1.
Assertion and Reason type questions :
Assertion (A): Matter can neither be created nor destroyed during any physical (or) chemical change
Reason (R) : Weight of reactants is equal to weight of products.
the elements are always present in a multiple proportion
please help me as soon as possible because and tell me a true r is flase or a is flase r is true or both are correct or both are incorrect
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please l do no this answer ask anybody
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correct fkryysyriydgtytysyttyiijj dj dj k dj dj
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