Math, asked by miyakhalifa1234, 9 months ago

please answer this question

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Answered by pc0354525

Answer:

Step-by-step explanation:

Option d..i,iii and iv

In this reaction, P and Q can not be broken down into simpler substances by chemical reactions, therefore, P and Q are elements. A compound is a substance made up of two or more elements chemically combined in a fixed proportion by mass, therefore, S is a compound, having a fixed composition.

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