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Consider the following reaction where two substances, A and B, combine to form a product Class 8

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Science Class 8 Science 120 views May 12, 2026 Reviewed & updated Sep 17, 2026
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Consider the following reaction where two substances, A and B, combine to form a product Class 8

Consider the following reaction where two substances, A and B, combine to form a product C: A+B → C. Assume that A and B cannot be broken down into simpler substances by chemical reactions. Based on this information, which of the following statements is correct? Class 8

(i) A, B, and C are all compounds and only C has a fixed composition.

(ii) C is a compound, and A and B have a fixed composition.

(iii) A and B are compounds, and C has a fixed composition.

(iv) A and B are elements, C is a compound, and has a fixed composition.

Answer:

The correct statement is (iv) A and B are elements, C is a compound, and has a fixed composition.

Justification: Since A and B cannot be broken down into simpler substances, they must be elements. When they combine to form C, which has a fixed composition, C is classified as a compound.

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